CN102431401A - Lubricating and sealing device for full-hanging traction hook - Google Patents

Abstract

The invention discloses a full-hanging traction hook lubricating and sealing device which comprises a traction hook part and a shaft part, wherein the outer surface of the shaft part is a conical surface, a lock nut is arranged at the small end part of the conical surface, a supporting seat is arranged at the large end part of the conical surface, a force transmission block is sleeved on the conical surface, a shell fixedly connected with the supporting seat is sleeved on the outer surfaces of the lock nut and the force transmission block, a straight-through grease nozzle communicated with the lock nut is arranged on the lock nut, and a grease nozzle communicated with the supporting seat is arranged on the traction hook. The sealing device is matched with the sealing device for use, so that the problems that threaded connection is easy to rust, and parts such as a shaft of a traction hook and a locking nut are difficult to assemble are solved, dust particles such as dust can be prevented from entering a lubricating part, lubricating grease can play a role for a long time, and the lubricating effect is enhanced; the whole sealing device can bear backward pulling force, forward pushing force and up-and-down force transmitted to the towing hook by the trailer, and the using requirements of the full trailer are met.

Description

Full hitch lubricating and sealing device

technical field

The invention relates to a traction ditch on a full-trailer tractor, in particular to a lubricating and sealing device for a full-trailer tractor. the

Background technique

At present, most of the full-hung tow hooks we see on the market do not have lubricating and sealing devices. The shaft of the towing hook and the lock nut are connected by threads, which is easy to get rusted after a period of use, which makes it difficult to assemble parts such as the shaft of the tow hook and the lock nut. Chinese patent CN01245505.9, the description of the semi-trailer vehicle traction seat records that the method of covering the contact surface that needs to be lubricated with a layer of wear-resistant veneer can achieve the effect of lubrication and reduce the use of grease at the same time, but this This method is not applicable on the full-hung tow hook, and the same method cannot be used to achieve the lubricating effect at the threaded connection between the shaft of the tow hook and the lock nut. Therefore, a lubricating device on the full-hung tow hook is urgently needed to solve the The thread between the shaft and the lock nut is easy to rust and difficult to assemble. the

Contents of the invention

The purpose of the present invention is to provide a full hitch traction with simple structure, convenient installation and disassembly, low cost, which can effectively solve the problem that the threaded connection between the shaft of the traction hook and the lock nut is easy to rust, and the parts on the traction hook are difficult to assemble. Hook lubrication and sealing device. the

To achieve the above object, the present invention adopts the following technical solutions:

The lubricating and sealing device of the full-hitch traction hook includes a traction hook part and a shaft part. The outer surface of the shaft part is a tapered surface. There is a support seat at the top, a power transmission block is set on the conical surface, and a housing fixedly connected with the support seat is set on the outer surface of the lock nut and the force transmission block. A straight-through grease nipple communicated with the traction hook is provided with a grease nipple communicated with the support seat. the

In the above technical scheme:

The grease nipple communicates with the support seat through an oil passage. the

The force transmission block includes a buffer block installed in the middle of the tapered surface. the

A front backing plate is installed on the tapered surface between the buffer block and the support seat, and a rear backing plate is installed on the tapered surface between the buffer block and the lock nut. the

The end of the lock nut is covered with a dust cover, and the dust cover is fixed on the casing by two or more bolts. the

Four bolt holes are arranged symmetrically on the end face of the housing, and the housing is connected to the tail beam of the trailer frame through the bolts in the bolt holes. the

The present invention installs the casing on the shaft of the traction hook, installs a straight-through grease nipple on the lock nut, and can lubricate the thread contact surface of the lock nut and the shaft of the traction hook after adding grease; Grease nipple, there is an oil passage B inside the towing hook, through which grease can enter the contact surface between the towing hook and the support seat, which effectively solves the problem that the threaded connection between the lock nut and the towing hook is easy to rust, and makes the shaft of the towing hook The assembly of parts and lock nuts and other parts is simple; the dust cover is fixed by bolts on the shell, the support seat and the shell are fixedly connected, and the dust ring is installed between the support seat and the traction pin of the traction hook through interference fit, which constitutes a Complete sealing device; cooperate with the sealing device to prevent dust and other dust particles from entering the lubricating part, so that the grease can function for a long time and strengthen the lubrication effect; the entire sealing device can withstand the backward pulling force and forward pushing force transmitted by the trailer to the towing hook and the force in the up and down directions meet the use requirements of the full trailer, the connection method is simple, the cost is low, and the use is convenient. the

Description of drawings

Fig. 1 is the main view structure schematic diagram of the present invention;

Fig. 2 is the left view structure diagram of Fig. 1;

Fig. 3 is a top view structural schematic diagram of Fig. 1;

In the figure: 1. Traction hook, 2. Shaft, 3. Grease nipple, 4. Dustproof ring, 5. Support seat, 6. Front pad, 7. Buffer block, 8. Shell, 9. Rear pad Plate, 10, lock nut, 11, straight-through grease nipple, 12, bolt, 14, dust cover, B, oil passage. the

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

Referring to Figures 1-3, it includes a traction hook part 1 and a shaft part 2, wherein the outer surface of the shaft part 2 is a conical surface, and a lock nut 10 is provided at the small end of the conical surface. The large end is provided with a support seat 5, and the tapered surface is covered with a power transmission block. The outer surface of the lock nut 10 and the force transmission block is covered with a housing 8 fixedly connected with the support seat 5. The lock nut 10 is provided with A straight-through grease nipple 11 communicated with the locking nut 10 is provided with a grease nipple 3 communicated with the bearing seat 5 on the towing hook 1 . The grease nipple 3 communicates with the support seat 5 through the oil passage B. the

The power transmission block includes a buffer block 7 installed in the middle of the tapered surface. A front backing plate 6 is installed on the tapered surface between the buffer block 7 and the support seat 5 , and a rear backing plate 9 is installed on the tapered surface between the buffer block 7 and the lock nut 10 . The end of the lock nut 10 is covered with a dust cover 14 , and the dust cover 14 is fixed on the housing 8 by two or more bolts 12 . Four bolt holes are arranged symmetrically on the end face of the housing 8, and the housing 8 is connected with the tail beam of the trailer frame through the bolts in the bolt holes. the

Specifically, the dust cover 14 is fixed on the housing 8 by two or more bolts 12, and four bolt holes are symmetrically arranged on the end face of the housing 8, and the housing 8 is connected with the tail of the trailer frame through the bolts in the bolt holes. Beam connections. the

The lubricating device of the present invention: a straight-through grease nipple 11 is installed on the lock nut 10, which can lubricate the thread contact surface of the lock nut and the shaft of the draw hook after adding grease; the draw hook 1 is welded with a The straight-through grease nipple 3 has an oil passage B inside the towing hook, through which grease can enter the contact surface between the towing hook and the support seat 5. the

The sealing device of the present invention: there are two threaded holes on the casing 8, the dust cover 14 is fixed on the casing 8 by two bolts 12; the dustproof ring 4 is installed on the shaft of the traction hook through interference fit In addition, the supporting seat 5 and the housing 8 constitute a complete sealing device, and through the cooperative use of the lubricating device and the sealing device, it solves the problem that the threaded connection is easy to rust, and the shaft of the traction hook and the lock nut are difficult to assemble. question. the

The assembly process of this lubricating and sealing device is as follows: the dust-proof ring 4 is installed on the shaft of the towing hook through an interference fit; the grease nipple 3 is welded on the towing hook 1; the support seat 5 is installed on the shaft of the towing hook through a clearance fit; The support base 5 is connected with the housing 8 through four bolts; the lock nut 10 is connected with the shaft of the towing hook through threads; a straight-through grease nipple 11 is installed on the housing 8; the dust cover 14 passes through two The bolt 12 is fixed on the housing 8; the housing 8 is mounted on the lock nut 10 through clearance fit; the

During use, be fixed on the vehicle frame tail beam by four holes on the housing 8. The rearward pulling force transmitted by the trailer hook to the traction hook 1 is transmitted to the rear backing plate 9, the buffer block 7, the front backing plate 6, and the support seat 5 in turn through the lock nut 10, and then presses the tail beam of the vehicle frame; when the tractor brakes, The forward thrust transmitted by the trailer coupler to the tow hook 1 passes through the tapered surface of the shaft of the tow hook 1 to the front backing plate 6, the buffer block 7, the rear backing plate 9, the housing 8, and the support seat 5, and then pulls the frame Tail beam. After the towing hook is installed with the pin shaft, the force transmitted from the trailer to the towing hook in the up and down direction is also borne by this device, which can fully withstand the backward pulling force, forward thrust and up and down direction force transmitted from the trailer to the towing hook. usage requirements. the

The content not described in detail in this specification belongs to the prior art known to those skilled in the art. the

Claims (6)

1. the full hauling hook of hanging lubricates and sealing arrangement; Comprise traction hook portion (1) and axial region (2); It is characterized in that: the outside face of said axial region (2) is a conical suface, is provided with jam nut (10) in the small end of conical suface, is provided with supporting seat (5) in the big end of conical suface; Be with the strength transmission piece on the conical suface; Outside face at jam nut (10) and strength transmission piece is set with the housing (8) of captiveing joint with supporting seat (5), and said jam nut (10) is provided with the through type lubrication adapter (11) that communicates with jam nut (10), and hauling hook (1) is provided with the lubrication adapter (3) that communicates with supporting base (5).

2. the lubricated and sealing arrangement of full extension hauling hook according to claim 1, it is characterized in that: said lubrication adapter (3) communicates through oil circuit (B) with supporting base (5).

3. the lubricated and sealing arrangement of full extension hauling hook according to claim 1 and 2, it is characterized in that: said strength transmission piece comprises the bump rubber (7) at the middle part that is installed in conical suface.

4. the lubricated and sealing arrangement of full extension hauling hook according to claim 3; It is characterized in that: on the conical suface between said bump rubber (7) and the supporting base (5) preceding backing plate (6) is installed, back backing plate (9) is installed on the conical suface between bump rubber (7) and the jam nut (10).

5. the lubricated and sealing arrangement of full extension hauling hook according to claim 4, it is characterized in that: said jam nut (10) end is covered with dust boot (14), and said dust boot (14) is fixed on the housing (8) through two or above bolt (12).

6. the lubricated and sealing arrangement of full extension hauling hook according to claim 5 is characterized in that: be symmetrical set four bolts hole on the end face of said housing (8), housing (8) used the bolt in the bolt hole to be connected with the Trailer type frame for use in vehicle transom beam.

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