Tool structure for disassembling rocker arm of recirculating ball steering gear

Abstract

The tool structure comprises a rocker arm clamping sleeve and a threaded push rod, an inner cavity is formed in the rocker arm clamping sleeve, an in-out clamping groove is formed in the bottom of the inner cavity, an opening is formed in the side face of the inner cavity, the in-out clamping groove is of a U-shaped structure, and an in-out opening of the in-out clamping groove is communicated with the opening. A clamping face is arranged at the bottom of the inner cavity, the threaded push rod penetrates into the inner cavity from the upper end of the rocker arm clamping sleeve, the size of the in-out end of the in-out clamping groove is larger than the diameter of an output shaft of the steering gear, a protruding part is arranged at the top end of the rocker arm clamping sleeve and is concentric with the rocker arm clamping sleeve, and a threaded hole is formed in the center of the protruding part. The threaded end of the threaded push rod penetrates through the threaded hole to enter the inner cavity. The tool is small and exquisite in structure, is only required to be clamped on the rocker arm, is flexible and convenient to use, does not damage a steering gear assembly and the steering rocker arm during disassembly, reduces waste and reduces the labor intensity of workers.

Description

Technical Field

[0001] The utility model relates to the technical field of disassembling a steering gear rocker arm, in particular to a tooling structure for disassembling a circulating ball steering gear rocker arm. Background Art

[0002] The recirculating ball steering gear drives the tie rod on the vehicle to reciprocate through the steering rocker arm to achieve the steering assist function. The output end of the steering gear is connected to the steering rocker arm through a tapered spline, and the spring washer and nut are installed on the end face of the rear rocker arm to prevent loosening. During production, the steering gear needs to replace the rocker arm. Since the nut presses the rocker arm tightly against the output end of the steering gear when installing the steering rocker arm, it is necessary to knock with a hammer when removing the steering rocker arm. There is a risk of damaging the steering gear assembly when knocking the rocker arm. The knocked-off rocker arm is damaged and cannot be used again, which is a serious waste; Chinese patent application No. 201821320852.9 discloses a steering gear rocker arm assembly disassembly device, which uses a hydraulic jack to press the round shaft pressure block, and the round shaft pressure block contacts the rocker arm shaft. After continuing to lift, the steering gear is separated from the rocker arm. The device is large in size, and the steering gear needs to be lifted, and the steering gear rocker arm shaft is placed down on the U-shaped hole plate, and the U-shaped hole plate is closed. The operation is troublesome, the overall device is fixed, and the hydraulic jack is used, which is not flexible to use.

[0003] Chinese patent application No. 202022901004.0 discloses a disassembly tool for a steering vertical arm, wherein the disassembly tool comprises a top support plate and a bottom support plate arranged relatively to each other, and the side walls of the top support plate and the bottom support plate are respectively connected to the connecting plate, and the top support plate is inserted into the steering output shaft above the steering vertical arm, and the bottom support plate is placed below the steering output shaft. To prevent damage to the output shaft, a gasket is arranged at the end of the steering output shaft, and the top surface of the gasket is provided with a backing adhesive, which is affixed to the end of the steering output shaft through a pasting process. Although the structure is simple, the structural strength is not high, and the gasket is easy to fall off after pasting. Moreover, in the case of excessive pressure, the gasket will also be deformed and separated from the end of the output shaft. The gasket will be driven to rotate during the tightening process of the adjusting bolt, which will also cause damage to the end of the output shaft. For this reason, a tooling structure for disassembling the rocker arm of a recirculating ball steering gear is proposed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a tooling structure for disassembling the rocker arm of a recirculating ball steering gear, which does not damage the steering gear assembly and the steering rocker arm during disassembly, reduces waste, reduces the labor intensity of employees, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tooling structure for disassembling the rocker arm of a recirculating ball steering gear, comprising a rocker arm sleeve and a threaded push rod, an inner cavity is arranged in the rocker arm sleeve, an inlet and outlet slot is arranged at the bottom of the inner cavity, an opening is arranged on the side of the inner cavity, the inlet and outlet slot is arranged as a U-shaped structure, the inlet and outlet of the inlet and outlet slot are connected with the opening, a clamping surface is arranged at the bottom of the inner cavity, the threaded push rod penetrates into the inner cavity from the upper end of the rocker arm sleeve, a pressing part is arranged at the lower end of the threaded push rod, a countersunk hole is arranged at the lower end of the pressing part, a pressure head is rotatably connected in the countersunk hole, a pressure bearing is arranged between the pressure head and the bottom wall of the countersunk hole, when disassembling, the pressure head and the countersunk hole are rotated in contact through the pressure bearing, which can not only withstand a certain pressure, but also ensure that the pressure head does not rotate, while the threaded push rod rotates, thereby not causing damage to the output shaft.

[0006] Furthermore, the dimensions of the entry and exit ends of the entry and exit slot are larger than the diameter of the output shaft of the steering gear.

[0007] Furthermore, a protrusion is provided at the top end of the rocker arm sleeve, and the protrusion is concentric with the rocker arm sleeve. A threaded hole is provided at the center of the protrusion, and the threaded end of the threaded push rod passes through the threaded hole into the inner cavity.

[0008] Furthermore, the threaded portion of the threaded push rod is rotatably connected to the threaded hole, and the threaded push rod is provided with a nut to facilitate wrench operation.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] Use a pneumatic wrench to tighten the nut of the threaded push rod, and the rotation of the threaded push rod drives the threaded push rod to move linearly upward, thereby achieving the purpose of disassembling the rocker arm. During disassembly, the pressure head and the countersunk hole are rotated and contacted through the pressure bearing, which can not only withstand a certain pressure, but also ensure that the pressure head does not rotate, while the threaded push rod rotates, thereby not causing damage to the output shaft; the tooling structure is compact, and only needs to be clamped on the rocker arm. It is flexible and convenient to use, and the steering gear assembly and the steering rocker arm are not damaged during disassembly, thereby reducing waste and reducing the labor intensity of employees. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the utility model removing the bolt structure;

[0013] Figure 3 This is a schematic diagram of the structure of the threaded push rod of the utility model;

[0014] Figure 4 This is a schematic diagram of the rocker arm installation structure of the utility model;

[0015] Figure 5This is a schematic diagram of the utility model in use state.

[0016] In the figure: 1 threaded push rod, 2 raised portion, 3 rocker arm sleeve, 4 inner cavity, 5 engaging surface, 6 entry and exit slot, 7 opening, 8 threaded hole, 9 rocker arm, 10 spring washer, 11 nut, 12 output shaft, 13 threaded portion, 14 pressing portion, 15 countersunk hole, 16 pressure head, 17 pressure bearing. DETAILED DESCRIPTION

[0017] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] See also Figure 1-5 The utility model provides a technical solution: a tooling structure for disassembling a rocker arm of a recirculating ball steering gear, comprising a rocker arm sleeve 3 and a threaded push rod 1, an inner cavity 4 is provided in the rocker arm sleeve 3, the inner cavity 4 is used to accommodate the connection between the rocker arm 9 and the output shaft 12, an inlet and outlet slot 6 is provided at the bottom of the inner cavity 4, an opening 7 is provided on the side of the inner cavity 4, the inlet and outlet slot 6 is set as a U-shaped structure, the inlet and outlet of the inlet and outlet slot 6 are connected with the opening 7, and the device is taken through the inlet and outlet slot 6 to make the engaging surface 5 engage on the rocker arm 9, the inlet and outlet end size of the inlet and outlet slot 6 is larger than the diameter of the output shaft 12 of the steering gear, the bottom of the inner cavity 4 is provided with an engaging surface 5, the engaging surface 5 Engaged with the lower part of the connecting end of the rocker arm 9, the threaded push rod 1 penetrates from the upper end of the rocker arm sleeve 3 into the inner cavity 4, and a pressing portion 14 is provided at the lower end of the threaded push rod 1, and a countersunk hole 15 is provided at the lower end of the pressing portion 14. A pressure head 16 is rotatably connected in the countersunk hole 15, and a pressure bearing 17 is provided between the pressure head 16 and the bottom wall of the countersunk hole 15. When disassembling, the threaded push rod 1 is rotated, and the pressure head 16 abuts against the end of the output shaft 12. The pressure bearing 17 realizes rotational contact between the pressure head 16 and the countersunk hole 15, which can withstand a certain pressure and ensure that the pressure head 16 does not rotate, while the threaded push rod 1 rotates, thereby not causing damage to the output shaft.

[0019] A raised portion 2 is provided at the top of the rocker arm sleeve 3, and the raised portion 2 is concentric with the rocker arm sleeve 3. A threaded hole 8 is provided at the center of the raised portion 2. The threaded end of the threaded push rod 1 passes through the threaded hole 8 into the inner cavity 4. The threaded portion 13 of the threaded push rod 1 is rotatably connected to the threaded hole 8. The threaded push rod 1 is provided with a nut to facilitate wrench operation.

[0020] The output shaft 12 of the steering gear is connected to the rocker arm 9 through a tapered spline. After the connection, a spring washer 10 and a nut 11 are installed on the end face of the rocker arm 9 to tighten and prevent loosening. When replacing the rocker arm, it is necessary to loosen the nut 11 first, remove the spring washer 10 and the nut 11, and clamp the rocker arm sleeve 3 between the rocker arm 9 and the output shaft 12 from one side. The threaded push rod 1 is screwed into the inner cavity 4, and the threaded push rod 1 supports the end face of the output shaft 12. Use a pneumatic wrench to tighten the nut of the threaded push rod 1. The rotation of the threaded push rod 1 drives the threaded push rod 1 to move linearly upward, thereby achieving the purpose of disassembling the rocker arm 9.

[0021] The basic principles, main features and advantages of the present invention are shown and described above. Without departing from the spirit and scope of the present invention, the present invention may also be subject to various changes and improvements, which are all within the scope of the present invention to be protected.

Claims

1. A tooling structure for disassembling a rocker arm of a recirculating ball steering gear, comprising a rocker arm ferrule (3) and a threaded push rod (1), characterized in that: An inner cavity (4) is provided in the rocker arm sleeve (3), an inlet and outlet slot (6) is provided at the bottom of the inner cavity (4), an opening (7) is provided on the side of the inner cavity (4), the inlet and outlet slot (6) is provided as a U-shaped structure, the inlet and outlet of the inlet and outlet slot (6) are connected to the opening (7), a locking surface (5) is provided at the bottom of the inner cavity (4), a threaded push rod (1) is inserted from the upper end of the rocker arm sleeve (3) into the inner cavity (4), and a pressing portion (14) is provided at the lower end of the threaded push rod (1). ), a countersunk hole (15) is provided at the lower end of the pressing portion (14), a pressing head (16) is rotatably connected in the countersunk hole (15), and a pressure bearing (17) is provided between the pressing head (16) and the bottom wall of the countersunk hole (15). When disassembling, the pressing head (16) and the countersunk hole (15) are in rotational contact through the pressure bearing (17), which can withstand a certain pressure and ensure that the pressing head (16) does not rotate, while the threaded push rod (1) rotates, thereby not causing damage to the output shaft.

2. The tooling structure for disassembling the rocker arm of a recirculating ball steering gear according to claim 1, characterized in that: The dimensions of the entry and exit ends of the entry and exit slot (6) are larger than the diameter of the output shaft (12) of the steering gear.

3. The tooling structure for disassembling the rocker arm of a recirculating ball steering gear according to claim 1, characterized in that: A protrusion (2) is provided at the top end of the rocker arm sleeve (3), the protrusion (2) being concentric with the rocker arm sleeve (3), a threaded hole (8) being provided at the center of the protrusion (2), and a threaded end of the threaded push rod (1) passes through the threaded hole (8) into the inner cavity (4).

4. The tooling structure for disassembling the rocker arm of a recirculating ball steering gear according to claim 3, characterized in that: The threaded portion (13) of the threaded push rod (1) is rotatably connected to the threaded hole (8), and the threaded push rod (1) is provided with a nut to facilitate wrench operation.

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