Welding and assembling workstation for rocker arm of mining machinery

Abstract

The mining machinery rocker arm welding and assembling workstation comprises a pit, a telescopic operation table, a variable matrix supporting mechanism and an annular wheel disc displacement mechanism, an equipment pit is formed in the pit, the variable matrix supporting mechanism and the annular wheel disc displacement mechanism are both integrated in the equipment pit, and the telescopic operation table is installed above the pit. The variable matrix supporting mechanism achieves coarse adjustment and fine adjustment dot-matrix type supporting of the special-shaped bottom face of the rocker arm through double-layer hydraulic cylinders arranged in a matrix mode. The annular wheel disc displacement mechanism adopts a differentiated design that a first clamping body carries out C-shaped embracing bidirectional clamping and a second clamping body carries out replaceable limiting column dual-mode clamping, and the first clamping body and the second clamping body synchronously rotate through gear tooth groove transmission; the telescopic operation table is composed of a plurality of sets of independent sliding units with idler wheels and can stretch out and draw back along the channel steel to form dynamic safety protection. Stable clamping, self-adaptive supporting and flexible displacement of rocker arms of different specifications and with or without lug holes are achieved, and the clamping device is suitable for welding and assembling operation of various mining machinery rocker arms.

Description

Technical Field

[0001] This invention relates to a welding and assembly workstation for rocker arms in mining machinery. Background Technology

[0002] The rocker arm of mining machinery is a key load-bearing component of heavy equipment such as coal mining machines and tunneling machines. Its main structure has a C-shaped cross-section, with a lug on one side and an irregular curved bottom surface. During the welding and assembly process, multiple sides of the rocker arm need to be welded and components assembled, therefore, the workpiece needs to be clamped, fixed, and flipped.

[0003] Existing positioning equipment mostly adopts a symmetrical clamping structure, which makes it difficult to effectively clamp irregularly shaped workpieces such as rocker arms that have both C-shaped open contours and lug features. If conventional chucks or clamping methods are used, they cannot simultaneously meet the requirements of C-shaped encirclement and lug positioning, resulting in unstable clamping or missing positioning references. Furthermore, the existing fixed support structure cannot fit the irregular curved surface at the bottom of the rocker arm, resulting in discontinuous support and affecting the welding and assembly accuracy.

[0004] In addition, different models of rocker arms vary significantly in length and width, and the existing fixed worktable is difficult to adapt to the assembly needs of workpieces of various specifications; and the pit-type assembly station also lacks a protective and operating interface that can be flexibly adjusted according to the size of the workpiece.

[0005] Therefore, there is an urgent need for a welding assembly workstation that can perform differentiated clamping based on the C-shaped structure and lug features of the rocker arm, has adaptive support capability for irregularly shaped bottom surfaces, and has an extendable and adjustable worktable to accommodate workpieces of various specifications. Summary of the Invention

[0006] The present invention provides a welding and assembly workstation for rocker arms of mining machinery to solve the problems existing in the prior art.

[0007] The technical solutions adopted in this invention are as follows: A welding and assembly workstation for a mining machinery rocker arm includes: The pit includes an equipment pit; The operating table includes several independent work surfaces, which are slidably or fixedly connected to the pit, wherein the slidably connected work surfaces can slide and extend toward the equipment pit. A matrix support mechanism is provided in the equipment pit, including a base frame, a support plate, a number of first hydraulic cylinders and a number of second hydraulic cylinders. The first hydraulic cylinders are located around the base frame and jointly drive the support plate to rise and fall. The second hydraulic cylinders are fixed below the support plate and their output shafts can extend to the top of the support plate to form a matrix support. The displacement mechanism, located in the equipment pit, includes a first clamping body and a second clamping body arranged opposite to each other. The first clamping body includes a rotatable C-shaped seat for encircling one side of the rocker arm, and the second clamping body includes a rotatable round seat for positioning the rocker arm shaft lug side.

[0008] Furthermore, the operating platform also includes channel steel and connecting beams. Several channel steels are fixed to several connecting beams to form a frame, and all the channel steels are arranged in the direction of the equipment pit. Several are set on the work surface, and each work surface is an independent unit, which is fixedly or slidably connected to the channel steel.

[0009] Furthermore, the worktable with sliding assembly is equipped with rollers, which are placed inside the channel steel, and the worktable slides inside the channel steel through the rollers.

[0010] Furthermore, the workbench also includes a panel, a support, and a guardrail. Several rollers are rotatably connected to both sides of the support, the panel is fixed to the upper surface of the support, and the guardrail is fixed to the panel or the support.

[0011] Furthermore, the second hydraulic cylinders are arranged in a matrix below the support plate, and the output shafts of the second hydraulic cylinders extend and retract independently.

[0012] Furthermore, the first clamping body also includes a first base, and the C-shaped seat is rotatably connected to the first base; the second clamping body also includes a second base, and the round seat is rotatably connected to the second base.

[0013] Furthermore, the C-shaped seat is equipped with a third hydraulic cylinder and a sliding fourth hydraulic cylinder, with the output shafts of the third hydraulic cylinder and the fourth hydraulic cylinder being perpendicular to each other to form a bidirectional clamping mechanism.

[0014] Furthermore, the second clamping body also includes a mounting base, a fifth hydraulic cylinder, a sixth hydraulic cylinder, and a limiting post. The mounting base is fixed to the round seat, the fifth hydraulic cylinder is slidably connected to the mounting base, the sixth hydraulic cylinder is used to lock the sliding position of the fifth hydraulic cylinder, the limiting post is coaxially arranged on the output shaft of the fifth hydraulic cylinder and is used to insert the rocker arm shaft lug, and the fifth hydraulic cylinder is used to press the limiting post tightly.

[0015] Furthermore, the mounting base includes a sliding plate and a sliding block. The sliding plate is fixed on the round base, and the fifth hydraulic cylinder is fixed on the sliding block. The sliding block is slidably connected to the sliding plate. The sixth hydraulic cylinder is fixed on the round base. A through hole is provided on the sliding plate. The output shaft of the sixth hydraulic cylinder passes through the through hole and abuts against the sliding block to lock its position.

[0016] Furthermore, the circular seat is provided with a guide rod, and a slider is provided on the guide rod, with the slide seat and the slider fixed together.

[0017] The present invention has the following beneficial effects: (1) The rocker arm C-shaped structure side is encircled and limited, and the shaft lug side is positioned and clamped respectively, realizing the unification and reliable fixation of the double-sided reference of the irregular workpiece, and solving the problem of unstable clamping and missing positioning reference caused by the inability of traditional symmetrical clamping mechanism to adapt to irregular contours. (2) The support plate is raised and lowered by the first hydraulic cylinder to achieve coarse positioning. The output shaft of the second hydraulic cylinder extends to form a dot matrix support, so that the support array can be adaptively adjusted according to the irregular curved surface contour of the bottom of the rocker arm, realizing continuous fitting support of the irregular bottom surface and avoiding local suspension or stress concentration caused by the fixed support structure. (3) By sliding and telescopic design of the worktable relative to the equipment pit, the coverage of the operating table can be flexibly adjusted according to the change of the rocker arm specifications. While meeting the assembly requirements of multiple workpieces, the telescopic table realizes dynamic protection of the pit opening. (4) The matrix support mechanism and the displacement mechanism are integrated into the equipment pit and, together with the telescopic operating table, a three-dimensional assembly operation space is formed, which enables the rocker arm to maintain structural stability during clamping, support and flipping, thereby improving the welding assembly accuracy and operation safety. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the present invention.

[0019] Figure 2 This is a structural diagram of the control panel.

[0020] Figure 3 This is a structural diagram of the workbench.

[0021] Figure 4 This is a structural diagram of the matrix support mechanism and the displacement mechanism working together on the rocker arm of a mining machine.

[0022] Figure 5 for Figure 4 Structural diagram of removing the rocker arm of mining machinery.

[0023] Figure 6 This is a structural diagram of the matrix support mechanism.

[0024] Figure 7 This is a structural diagram of the first clamping body.

[0025] Figure 8 , Figure 9 and Figure 10 These are all structural diagrams of the second clamping body. Detailed Implementation

[0026] The invention will now be further described with reference to the accompanying drawings.

[0027] like Figure 1As shown, this invention discloses a welding and assembly workstation for mining machinery rocker arms, designed to solve problems such as unstable clamping, misaligned supports, poor adaptability of the operating table, and insufficient operational safety during the welding and assembly of irregularly shaped heavy workpieces like mining machinery rocker arms. The overall structure combines... Figures 1 to 10 A detailed description is provided below. This invention includes a pit 1, a retractable operating platform 2, a variable matrix support mechanism 3, and a ring-shaped wheel displacement mechanism 4. The connection relationship, structural details, and overall workflow of each component are further elaborated below.

[0028] like Figure 1 Pit 1 is an integral concrete pouring structure. Equipment pit 11 is opened in its core area. Matrix support mechanism 3 and displacement mechanism 4 are installed inside equipment pit 11. As the core execution mechanism of the workstation, they realize the support and clamping displacement operation of the rocker arm. The operating platform 2 is directly set on the upper surface of pit 1, covering the opening area of ​​equipment pit 11, providing operators with a welding and assembly work platform. At the same time, the position can be adjusted according to the specifications of the rocker arm to adapt to different work space requirements.

[0029] like Figure 2 The telescopic operating platform 2 includes a work surface 21, channel steel 22 and connecting beams 23. Several channel steels 22 and several connecting beams 23 are fixedly connected by welding to form a stable platform structure. All the channel steels 22 are arranged facing the equipment pit 11, and the slots of the channel steels 22 are set upward to provide a track foundation for the sliding of the work surface 21.

[0030] Combination Figure 3 The worktable 21 is composed of multiple independent units, which are slidably or fixedly connected to the channel steel 22. The slidably connected worktable 21 can slide and extend toward the equipment pit 11.

[0031] The sliding worktable 21 includes a panel 211, a bracket 212 and rollers 213. The bracket 212 is fixed to the lower surface of the panel 211. The rollers 213 are rotatably connected to both sides of the bracket 212 and are embedded in the groove of the channel steel 22, forming a rolling engagement with the channel steel 22, so that each sliding unit can reciprocate along the extension direction of the channel steel 22, that is, the direction of the equipment pit 11.

[0032] The fixed assembly workbench 21 lacks rollers 213, and its bracket 212 is directly fixed to the channel steel 22.

[0033] The workbench 21 is also equipped with a guardrail 214. The guardrail 214 is fixed to the edge of the panel 211 or the upper surface of the bracket 212 by welding. When the sliding unit of the workbench 21 is extended and retracted according to the size of the rocker arm, the guardrail 214 moves synchronously with the sliding unit. It can not only protect the operator, but also form a dynamic safety barrier for the opening of the equipment pit 11, filling the gap in the operating area when rocker arms of different specifications are operating.

[0034] The sliding drive of the worktable 21 can be either electrically controlled or manually pushed, depending on the site requirements. When electrically controlled, a micro drive motor is equipped on the bracket 212, which drives the rollers 213 to achieve automatic extension and retraction. When manually pushed, the operator can directly push the panel 211, and the position is adjusted by the rolling of the rollers 213. Both drive methods combine the efficiency of automated operation with the flexibility of manual operation.

[0035] like Figure 4 , Figure 5 and Figure 6 The variable matrix support mechanism 3 is installed at the bottom of the equipment pit 11 and includes a first hydraulic cylinder 31, a second hydraulic cylinder 32, a support plate 33 and a base frame 34. The base frame 34 is a welded steel structure and is fixed to the concrete bottom surface of the equipment pit 11 by expansion bolts. Several base frames 34 are arranged in a regular matrix in the equipment pit 11 to form the basic framework of the entire support mechanism.

[0036] Each base frame 34 is vertically mounted with a first hydraulic cylinder 31 around its perimeter. The cylinder body of the first hydraulic cylinder 31 is fixedly connected to the base frame 34, and its output axis extends upward and connects to the lower surface of the support plate 33. When multiple sets of first hydraulic cylinders 31 extend and retract synchronously, they can drive the support plate 33 to achieve overall lifting and lowering movement.

[0037] Several second hydraulic cylinders 32 are also installed on the lower surface of the support plate 33. The second hydraulic cylinders 32 are also arranged in a matrix. Their cylinder bodies are fixedly connected to the support plate 33, and their output shafts extend vertically upward. The output shafts of each second hydraulic cylinder 32 can extend and retract independently.

[0038] Before actual operation, technicians analyze the dot matrix coordinate data of the irregular curved surface at the bottom of the rocker arm using a 3D model of the rocker arm. Based on this data, they preset the extension and retraction of each second hydraulic cylinder 32. During operation, the top of the output shaft of the second hydraulic cylinder 32 directly contacts the irregular curved surface at the bottom of the rocker arm. Through point-to-point extension and retraction adjustment, a dot matrix support that fits the irregular curved surface of the rocker arm is formed, achieving continuous and stable support for the bottom of the rocker arm and avoiding workpiece deformation caused by local suspension and stress concentration during the welding, assembly, or displacement of the rocker arm.

[0039] The ring-shaped wheel displacement mechanism 4 is also installed in the equipment pit 11 and is used in conjunction with the variable matrix support mechanism 3. It includes a first clamping body 41 and a second clamping body 42 arranged symmetrically. The two correspond to the C-shaped structure side and the shaft lug side of the rocker arm, respectively, to realize differentiated clamping of the rocker arm. Both can rotate around their own base to drive the rocker arm to complete 360° flipping.

[0040] like Figure 7 The first clamping body 41 includes a C-shaped seat 411, a first base 412, a third hydraulic cylinder 413, a fourth hydraulic cylinder 414, a first pressure plate 415, and a second pressure plate 416. The first base 412 is fixed to the bottom of the equipment pit 11. The outer circumference of the C-shaped seat 411 is machined with continuous toothed grooves. Rollers, a drive motor, and gears are installed on the first base 412. The rollers roll in contact with the lower surface of the C-shaped seat 411 to provide support for the C-shaped seat 411. The gears mesh with the toothed grooves on the outer wall of the C-shaped seat 411. The output shaft of the drive motor is connected to the gears. When the motor starts, the C-shaped seat 411 is driven to rotate smoothly around the first base 412 through the meshing transmission of the gears and toothed grooves.

[0041] A rectangular opening slot is provided on the C-shaped seat 411. The third hydraulic cylinder 413 and the fourth hydraulic cylinder 414 are both installed in the rectangular opening slot. A first pressure plate 415 is fixedly connected to the end of the output shaft of the third hydraulic cylinder 413 for pressing the rocker arm.

[0042] Two parallel slide rails are installed in the rectangular slot. Two sliders are slidably connected on the slide rails. Two fourth hydraulic cylinders 414 are fixed on the two sliders respectively, and the output shafts of the two fourth hydraulic cylinders 414 are arranged facing each other. The ends of the cylinders are fixedly connected to a second pressure plate 416. Anti-slip rubber pads are provided on the contact surface of the second pressure plate 416 for clamping the rocker arm.

[0043] The fourth hydraulic cylinder 414 can slide along the slide rail with the slider, adapting to rocker arm C-shaped structures of different sizes. The pressing directions of the first pressure plate 415 and the second pressure plate 416 are perpendicular to each other, forming a two-way clamping on the rocker arm C-shaped structure side to ensure the firmness of the clamping.

[0044] like Figure 8 , Figure 9 and Figure 10 The second clamping body 42 includes a round seat 421, a second base, a fifth hydraulic cylinder 422, a sixth hydraulic cylinder 423, a limiting post 425, and a mounting base 424. The second base has the same structure as the first base 412 and is fixed to the bottom of the equipment pit 11. The round seat 421 adopts the same toothed groove + gear + motor + roller structure as the C-shaped seat 411, and is rotatably connected to the second base to ensure that the first clamping body 41 and the second clamping body 42 can rotate synchronously, driving the rocker arm to flip the surface smoothly.

[0045] Mounting base 424 is fixed on round base 421 and includes sliding plate 4241 and sliding base 4242. Dovetail groove is machined on sliding plate 4241, and dovetail block matching the dovetail groove is provided in sliding base 4242. Sliding base 4242 is slidably connected to sliding plate 4241 through the cooperation of dovetail block and dovetail groove. Fifth hydraulic cylinder 422 is fixed on sliding base 4242. Limiting post 425 is located between two sliding bases 4242 and coaxial with fifth hydraulic cylinder 422. The output shaft of fifth hydraulic cylinder 422 extends out and abuts against the head of limiting post 425, causing the tail of limiting post 425 to abut against the tail side of sliding base 4242. Limiting post 425 can be replaced with different specifications according to the diameter of the lug hole of the rocker arm shaft to achieve precise fit with lug holes of different diameters.

[0046] A sixth hydraulic cylinder 423 is installed on the round seat 421. The output shaft of the sixth hydraulic cylinder 423 passes through the through hole on the slide plate 4241 and can directly abut against the side wall of the slide 4242. When the slide 4242 slides along the slide plate 4241 to the designated position, the output shaft of the sixth hydraulic cylinder 423 extends out and locks the position of the slide 4242 and the fifth hydraulic cylinder 422 through rigid contact, so as to avoid position displacement during the rocker arm displacement process.

[0047] Two guide rods 4211 are also installed in parallel on the outer wall of the round seat 421. A slider is slidably connected to the guide rod 4211. The slider is fixedly connected to the side wall of the slide seat 4242. The cooperation between the guide rod 4211 and the slider further improves the stability of the slide seat 4242 when sliding, as well as the structural rigidity when clamping the rocker arm.

[0048] When clamping the rocker arm, if the rocker arm has a lug, the limiting post 425 is inserted into the lug hole, and the fifth hydraulic cylinder 422 is activated. The extension of the output shaft achieves the clamping and fixing of the limiting post 425, thus completing the hole and shaft positioning of the rocker arm with a lug hole. If the rocker arm does not have a lug, the corresponding end of the rocker arm is placed directly between the two slides 4242, and the fifth hydraulic cylinder 422 is activated. The output shaft directly abuts against the end of the rocker arm (removing the limiting post 425), thus achieving the clamping and fixing of the rocker arm without a lug hole. The two clamping modes can be adapted to rocker arms with different structures without changing the core components.

[0049] The overall workflow of this mining machinery rocker arm welding and assembly workstation is as follows: First, based on the three-dimensional model of the rocker arm to be processed, the technicians analyze the dot matrix coordinate data of the irregular curved surface at its bottom, input the data into the control system of the workstation, and preset the extension and retraction of each first hydraulic cylinder 31 and second hydraulic cylinder 32 in the variable matrix support mechanism 3.

[0050] Subsequently, the operator adjusts the worktable 21 of the telescopic operating platform 2 according to the length and width specifications of the rocker arm. By electrically driving or manually pushing, the independent units of the worktable 21 are slid to adjust the size of the operating space. Simultaneously, the guardrails 214 on the sliding units form a safety enclosure for the equipment pit 11. Next, the rocker arm is hoisted into the equipment pit 11 by a crane and slowly lowered above the variable matrix support mechanism 3. The variable matrix support mechanism 3 is then activated. The first hydraulic cylinder 31 drives the support plate 33 to rise and fall, completing the coarse adjustment support of the rocker arm. Then, the output shaft of the second hydraulic cylinder 32 extends and retracts independently according to preset data, forming a dot matrix support that conforms to the irregular surface of the rocker arm's bottom, achieving initial fixation of the rocker arm.

[0051] Then, the ring-shaped wheel displacement mechanism 4 is activated to clamp the rocker arm. For the first clamping body 41, according to the width of the rocker arm C-shaped structure, the fourth hydraulic cylinder 414 is slid to the designated position, the third hydraulic cylinder 413 is activated, and the first pressure plate 415 is driven to press down to touch the rocker arm C-shaped structure. At the same time, the two fourth hydraulic cylinders 414 are activated, and the second pressure plate 416 is driven to move towards each other to clamp the side wall of the rocker arm C-shaped structure, thus completing the bidirectional clamping of one side of the rocker arm.

[0052] For the second clamping body 42, according to the position or end size of the rocker arm shaft lug, slide the slide block 4242 to the designated position, and activate the sixth hydraulic cylinder 423 to lock the position of the slide block 4242. If it is a rocker arm with lug, insert the matching specification limit post 425 into the lug and activate the fifth hydraulic cylinder 422 to tighten and fix it. If it is a rocker arm without lug, fix it directly by the fifth hydraulic cylinder 422 abutting against the end of the rocker arm. At this point, the overall clamping of the rocker arm is completed.

[0053] During welding and assembly operations, the operator stands on the retractable operating platform 2 and, according to the operational requirements, starts the drive motor of the annular wheel positioning mechanism 4 through the control system. This drives the first clamping body 41 and the second clamping body 42 to rotate synchronously, adjusting the rocker arm to the required welding and assembly angle or flipping it over. During the positioning process, the second hydraulic cylinder 32 of the variable matrix support mechanism 3 first retracts away from the rocker arm. After the position of the positioning mechanism 4 is adjusted, the variable matrix support mechanism 3 extends and retracts according to the change in the rocker arm's posture, always maintaining close support for the rocker arm.

[0054] After completing the welding and assembly work at the current position, the operator can readjust the rotation angle of the positioner mechanism until the welding and assembly work of all parts of the rocker arm is completed. After the work is completed, the hydraulic cylinders of the annular wheel positioner mechanism 4 are closed in sequence, the clamping of the rocker arm is released, and the finished rocker arm is lifted out of the equipment pit 11 by the overhead crane. The operator then resets the worktable 21 of the telescopic operating platform 2, completing the entire welding and assembly process and preparing for the work of the next workpiece.

[0055] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be considered within the scope of protection of the present invention.

Claims

1. A welding and assembly workstation for a mining machinery rocker arm, characterized in that: include: Pit (1), wherein the pit (1) is provided with equipment pit (11); The operating table (2) includes several independent work surfaces (21), which are slidably or fixedly connected to the pit (1), wherein the slidably connected work surfaces (21) can slide and extend toward the equipment pit (11); The matrix support mechanism (3) is located in the equipment pit (11) and includes a base frame (34), a support plate (33), a number of first hydraulic cylinders (31) and a number of second hydraulic cylinders (32). The first hydraulic cylinders (31) are located around the base frame (34) and drive the support plate (33) to rise and fall together. The second hydraulic cylinders (32) are fixed below the support plate (33) and their output shafts can extend to the top of the support plate (33) to form a matrix support. The displacement mechanism (4) is located in the equipment pit (11) and includes a first clamping body (41) and a second clamping body (42) arranged opposite to each other. The first clamping body (41) includes a rotatable C-shaped seat (411) for encircling one side of the rocker arm, and the second clamping body (42) includes a rotatable round seat (421) for positioning the rocker arm shaft lug side.

2. The mining machinery rocker arm welding and assembly workstation as described in claim 1, characterized in that: The operating platform (2) also includes channel steel (22) and connecting beams (23). Several channel steels (22) and several connecting beams (23) are fixed to form a platform, and all the channel steels (22) are arranged in the direction of the equipment pit (11).

3. The mining machinery rocker arm welding and assembly workstation as described in claim 2, characterized in that: The worktable (21) with sliding assembly is provided with rollers (213), which are placed inside the channel steel (22). The worktable (21) slides inside the channel steel (22) through the rollers (213).

4. The mining machinery rocker arm welding and assembly workstation as described in claim 2, characterized in that: The workbench (21) also includes a panel (211), a bracket (212) and a guardrail (214). Several rollers (213) are rotatably connected to both sides of the bracket (212). The panel (211) is fixed on the upper surface of the bracket (212), and the guardrail (214) is fixed on the panel (211) or the bracket (212).

5. The mining machinery rocker arm welding and assembly workstation as described in claim 1, characterized in that: The second hydraulic cylinder (32) is arranged in a matrix below the support plate (33), and the output shaft of the second hydraulic cylinder (32) extends and retracts independently.

6. The mining machinery rocker arm welding and assembly workstation as described in claim 1, characterized in that: The first clamping body (41) further includes a first base (412), and the C-shaped seat (411) is rotatably connected to the first base (412); the second clamping body (42) further includes a second base, and the round seat (421) is rotatably connected to the second base.

7. The mining machinery rocker arm welding and assembly workstation as described in claim 1, characterized in that: The C-shaped seat (411) is provided with a third hydraulic cylinder (413) and a sliding fourth hydraulic cylinder (414). The output shaft of the third hydraulic cylinder (413) and the output shaft of the fourth hydraulic cylinder (414) are perpendicular to each other to form a bidirectional clamping.

8. The mining machinery rocker arm welding and assembly workstation as described in claim 1, characterized in that: The second clamping body (42) also includes a mounting base (424), a fifth hydraulic cylinder (422), a sixth hydraulic cylinder (423), and a limiting post (425). The mounting base (424) is fixed to the round seat (421). The fifth hydraulic cylinder (422) is slidably connected to the mounting base (424). The sixth hydraulic cylinder (423) is used to lock the sliding position of the fifth hydraulic cylinder (422). The limiting post (425) is coaxially arranged on the output shaft of the fifth hydraulic cylinder (422) and is used to insert the rocker arm shaft lug. The fifth hydraulic cylinder (422) is used to press the limiting post (425) against the rocker arm shaft lug.

9. The mining machinery rocker arm welding and assembly workstation as described in claim 8, characterized in that: The mounting base (424) includes a sliding plate (4241) and a sliding block (4242). The sliding plate (4241) is fixed on the round base (421), and the fifth hydraulic cylinder (422) is fixed on the sliding block (4242). The sliding block (4242) is slidably connected to the sliding plate (4241). The sixth hydraulic cylinder (423) is fixed on the round base (421). A through hole is provided on the sliding plate (4241). The output shaft of the sixth hydraulic cylinder (423) passes through the through hole and abuts against the sliding block (4242) to lock its position.

10. The mining machinery rocker arm welding and assembly workstation as described in claim 9, characterized in that: The circular seat (421) is provided with a guide rod (4211), and a slider is provided on the guide rod (4211). The slider (4242) is fixed to the slider.

Images