Sectional arm pull sleeve tooling

Abstract

The present application relates to the technical field of excavators, and discloses a joint arm sleeve pulling tool, comprising a joint arm body, a sleeve pulling tool and a frame, wherein shaft sleeve holes are arranged at both ends of the joint arm body, and the sleeve pulling tool comprises an oil cylinder, a shaft sleeve and a sleeve pressing core rod, wherein the bottom end outer wall of the oil cylinder is fixedly mounted on the top end outer wall of the shaft sleeve, the sleeve pressing core rod is mounted inside the shaft sleeve, and the output end of the oil cylinder is abutted against the top end of the sleeve pressing core rod, and radial hole positioning mechanisms are also installed on the outer walls of the shaft sleeve and the sleeve pressing core rod, and in the present utility model, by means of the radial hole positioning mechanism, the radial holes in the bushing can be easily found during the sleeve pressing process, and the radial hole positioning mechanism is convenient to withdraw, and compared with the prior art, the operation is simple and quick, and the installation accuracy is high.

Description

Technical Field

[0001] The present application relates to the technical field of excavators, and in particular to a boom sleeve tooling. Background Art

[0002] Sectional arm (such as Figure 1 The workpiece has two sets of axial holes that need to be drawn. When pressing the sleeve, almost all dimensions of the shell have been processed, and only a small amount of grinding allowance is left on the inner hole of the bushing. Therefore, during the pressing process, it is necessary to ensure that the shell and bushing are not scratched;

[0003] The existing process usually adopts the process method of cooling the bushing in liquid nitrogen, heating the shell in a drying oven, and using a sleeve pulling tool to press the bushing into the shell. Often, due to the lack of guidance of the sleeve pressing tool, the bushing is prone to deflection during the sleeve pressing; or when there are directional requirements for the grooves and small holes on the bushing and the shell, the sleeve pressing tool has no angular positioning, and it is difficult to ensure that the bushing is accurately pressed into the shell by the worker's visual inspection, and the sleeve needs to be withdrawn and re-pressed, so the operation is cumbersome and the installation accuracy is low. Serious problems may also occur during the use of the excavator.

[0004] Therefore, there is an urgent need for a tool that is easy to use and can solve the defects of the existing pull-set tooling, such as complicated operation and low installation precision, so as to improve production efficiency, product yield and product quality.

[0005] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] In order to solve the problem that the sleeve pressing tool has no guidance and the sleeve is easily deflected during pressing; or when there are directional requirements between the groove or small hole on the sleeve and the shell, the sleeve pressing tool has no angular positioning, and it is difficult for the worker to ensure that the sleeve is accurately pressed into the shell by visual inspection, and the sleeve needs to be withdrawn and re-pressed, so the operation is cumbersome and the installation accuracy is low, the present application provides a joint arm sleeve pulling tool.

[0007] The joint arm pull sleeve tooling provided in this application adopts the following technical solution:

[0008] A sleeve pulling tool for a joint arm, comprising a joint arm body, a sleeve pulling tool and a frame, wherein shaft sleeve holes are arranged at both ends of the joint arm body, and the sleeve pulling tool comprises an oil cylinder, a shaft sleeve and a sleeve pressing mandrel, wherein the outer wall of the bottom end of the oil cylinder is fixedly mounted on the outer wall of the top end of the shaft sleeve, and the sleeve pressing mandrel is mounted inside the shaft sleeve, and the output end of the oil cylinder abuts against the top end of the sleeve pressing mandrel, and radial hole positioning mechanisms are also installed on the outer walls of the shaft sleeve and the sleeve pressing mandrel;

[0009] The radial hole positioning mechanism includes a connecting plate fixedly connected to the outer wall of the sleeve pressing core rod, the outer wall of the connecting plate is fixedly connected to two levers, the top outer wall of the two levers away from the connecting plate is fixedly connected to a positioning pin, the outer wall of the shaft sleeve is fixedly connected to a fan-shaped plate, the outer wall of the fan-shaped plate is provided with an arc groove, and the positioning pin is movably connected to the inner wall of the arc groove.

[0010] Preferably, the sleeve pressing core rod is adapted to be plugged into the shaft sleeve hole.

[0011] Preferably, the inner walls on both sides of the top of the frame are fixedly connected with a top plate, and the bottom outer wall of the top of the shaft sleeve is fixedly installed on the top outer wall of the top plate.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] By setting up the radial hole positioning mechanism, the radial hole in the bushing can be easily found during the sleeve pressing process. At the same time, the radial hole positioning mechanism is easy to withdraw. Compared with the existing technology, the operation is simple and fast, and the installation accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the section arm body in the application embodiment;

[0015] Figure 2 It is a schematic diagram of the structure of the pull sleeve tooling in the application embodiment;

[0016] Figure 3 is an assembly stereogram of an embodiment of the application;

[0017] Figure 4 It is an overall schematic diagram of the rack in the application embodiment.

[0018] Explanation of the reference numerals: 1. arm body; 101. shaft sleeve hole; 2. sleeve pulling tool; 201. oil cylinder; 202. shaft sleeve; 203. lever; 204. positioning pin; 205. arc groove; 206. sleeve pressing core rod; 207. fan-shaped disk; 208. connecting disk; 3. frame; 301. top plate. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-4 This application is described in further detail.

[0020] The present application embodiment discloses a joint arm pull sleeve tooling. Figure 1-4, a joint arm sleeve pulling tool, comprising a joint arm body 1, a sleeve pulling tool 2 and a frame 3, wherein shaft sleeve holes 101 are arranged at both ends of the joint arm body 1, the sleeve pulling tool 2 comprises an oil cylinder 201, a shaft sleeve 202 and a sleeve pressing mandrel 206, the bottom end outer wall of the oil cylinder 201 is fixedly mounted on the top end outer wall of the shaft sleeve 202, the sleeve pressing mandrel 206 is mounted inside the shaft sleeve 202, and the output end of the oil cylinder 201 is against the top end of the sleeve pressing mandrel 206, and the outer walls of the shaft sleeve 202 and the sleeve pressing mandrel 206 are also installed with radial hole positioning mechanisms;

[0021] The radial hole positioning mechanism includes a connecting disk 208 fixedly connected to the outer wall of the pressing sleeve core rod 206, the outer wall of the connecting disk 208 is fixedly connected to two levers 203, the top outer wall of the two levers 203 away from the connecting disk 208 is fixedly connected with a positioning pin 204, the outer wall of the shaft sleeve 202 is fixedly connected with a fan-shaped disk 207, the outer wall of the fan-shaped disk 207 is provided with an arc groove 205, and the positioning pin 204 is movably connected to the inner wall of the arc groove 205.

[0022] The sleeve pressing core rod 206 is adapted to be plugged into the shaft sleeve hole 101 , so that the sleeve pressing core rod 206 can be assembled into the shaft sleeve hole 101 at the end of the joint arm body 1 .

[0023] The inner walls on both sides of the top of the frame 3 are fixedly connected with a top plate 301 , and the bottom outer wall of the top of the shaft sleeve 202 is fixedly installed on the top outer wall of the top plate 301 .

[0024] The implementation principle of the joint arm sleeve pulling tooling of the embodiment of the present application is as follows: during assembly, firstly, the chamfered end of the sleeve hole 101 is placed upward and placed on the bottom inner wall of the frame 3, so that the sleeve hole 101 is aligned with the bottom end of the sleeve pressing mandrel 206, and then the bushing is placed in the sleeve hole 101, and the sleeve pressing cylinder 201 is installed on the sleeve 202, and its output end is inserted into the sleeve 202.

[0025] Reference Figure 3 , then adjust the direction of the bushing. Through the radial hole positioning mechanism, rotate the lever 203 so that the lever 203 drives the positioning pin 204 to slide in the arc groove 205. Through the limit of the arc groove 205, it can be ensured that the lever 203 rotates 90 degrees. At this time, the lever 203 drives the pressing core rod 206 and the bushing to rotate 90 degrees, ensuring that the bushing and the shaft sleeve hole 101 are 90 degrees. Then the other end and the tooling are sleeved on the cylinder 201, and then the baffle is sleeved on the hydraulic tooling. The cylinder 201 is started, and its output end slowly shrinks until the sealing ring is aligned with the shaft sleeve hole 101 and then stops. At this time, adjust the direction of the bushing to ensure that the bushing oil hole and the shaft sleeve hole 101 are 90 degrees.

[0026] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0027] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0028] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0029] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. The joint arm pull sleeve tooling is characterized by: It comprises a joint arm body (1), a sleeve pulling tool (2) and a frame (3), wherein the two ends of the joint arm body (1) are provided with shaft sleeve holes (101), the sleeve pulling tool (2) comprises an oil cylinder (201), a shaft sleeve (202) and a sleeve pressing mandrel (206), the bottom end outer wall of the oil cylinder (201) is fixedly mounted on the top end outer wall of the shaft sleeve (202), the sleeve pressing mandrel (206) is mounted inside the shaft sleeve (202), and the output end of the oil cylinder (201) is abutted against the top end of the sleeve pressing mandrel (206), and radial hole positioning mechanisms are also installed on the outer walls of the shaft sleeve (202) and the sleeve pressing mandrel (206); The radial hole positioning mechanism comprises a connecting disk (208) fixedly connected to the outer wall of the sleeve pressing core rod (206), the outer wall of the connecting disk (208) is fixedly connected to two levers (203), the top outer wall of the two levers (203) away from the connecting disk (208) is fixedly connected to a positioning pin (204), the outer wall of the shaft sleeve (202) is fixedly connected to a fan-shaped disk (207), the outer wall of the fan-shaped disk (207) is provided with an arc groove (205), and the positioning pin (204) is movably connected to the inner wall of the arc groove (205).

2. The joint arm pull sleeve tooling according to claim 1 is characterized in that: The sleeve pressing core rod (206) is adapted to be plugged into the shaft sleeve hole (101).

3. The joint arm pull sleeve tooling according to claim 1 is characterized in that: The inner walls on both sides of the top of the frame (3) are fixedly connected to a top plate (301), and the bottom outer wall of the top of the shaft sleeve (202) is fixedly mounted on the top outer wall of the top plate (301).

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