Cylindrical grinding machine for production of hydraulic oil cylinder of dump truck

Abstract

The cylindrical grinding machine comprises a machining table, four supporting rods distributed in a rectangular shape are fixedly connected to the upper end of the machining table, the upper ends of the four supporting rods are jointly and fixedly connected with a top plate, and a partition plate is fixedly connected to the position, below the top plate, between the four supporting rods; a moving groove is formed in the upper end of the machining table, a rectangular moving block is slidably connected into the moving groove, three groove separating blocks which are longitudinally and evenly arranged at intervals are fixedly connected to the inner wall of the right side of the moving groove, the upper end faces of the groove separating blocks are flush with the upper end of the machining table, and the groove separating blocks and the inner wall of the left side of the moving groove are arranged at intervals. The upper end of the moving block extends out of the moving groove and is fixedly connected with a first clamping block. The hydraulic oil cylinder rod piece machining device has the advantages that continuous machining work of three procedures of a hydraulic oil cylinder rod piece can be continuously carried out, manual rod piece dismounting or grinding block replacement work is not needed, and the machining efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of cylindrical grinders, in particular to a cylindrical grinder for producing hydraulic cylinders of dump trucks. Background Art

[0002] Dump trucks are vehicles that unload goods by themselves through hydraulic or mechanical lifting, also known as dump trucks. They are composed of automobile chassis system, hydraulic lifting system, cargo compartment and power take-off device. Among them, hydraulic cylinder is an important actuator in hydraulic lifting system. The piston rod and cylinder barrel in the hydraulic oil cylinder have high matching accuracy, and the matching surface of the piston rod is processed by external cylindrical grinder. External cylindrical grinder is a grinder for processing the outer surface of cylindrical, conical or other shapes of workpieces and the shoulder end surface.

[0003] When grinding the built-in rods of the hydraulic cylinder of a dump truck, the grinding work usually consists of three steps, namely rough grinding, fine grinding and polishing. The three processes are carried out in sequence, so three grinding blocks of different specifications are required. When the existing cylindrical grinder is performing these three processes, the grinding blocks must be replaced manually before the grinding work of each process can be carried out, which is time-consuming to replace and has low efficiency.

[0004] To solve the above problems, we proposed a cylindrical grinder for the production of hydraulic cylinders for dump trucks. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the background technology and to propose an external cylindrical grinder for producing a hydraulic cylinder of a dump truck.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an external cylindrical grinder for producing a hydraulic cylinder of a dump truck, comprising a processing table, wherein the upper end of the processing table is fixedly connected to four support rods distributed in a rectangular shape, the upper ends of the four support rods are commonly fixedly connected to a top plate, a partition is fixedly connected between the four support rods and below the top plate, a moving groove is opened at the upper end of the processing table, a rectangular moving block is slidably connected in the moving groove, three partition blocks arranged uniformly at intervals in the longitudinal direction and whose upper end faces are flush with the upper end of the processing table are fixedly connected to the right inner wall of the moving groove, the partition block is spaced apart from the inner wall of the left side of the moving groove, the moving groove extends out of the upper end of the moving block and is fixedly connected to a first clamping block, a second clamping block is provided at the upper end of the processing table and on the right side of the first clamping block, the first clamping block and the second clamping block are both coaxially rotatably connected to a rotating block at the center positions, electric clamps are provided on opposite sides of the two rotating blocks, a first motor driving the corresponding rotating block to rotate is fixedly installed at the left end of the first clamping block, a lateral pushing mechanism is provided in the moving groove, and a longitudinal moving mechanism is provided at the upper end of the processing table;

[0007] The partition is provided with a movable opening at a corresponding position above the movable groove, and a mounting block is provided above the movable opening. The lower end of the mounting block is fixedly connected to three mounting rods arranged evenly in the longitudinal direction, and the lower ends of the three mounting rods all pass through the movable opening and are fixedly connected to three grinding blocks of different specifications. A lifting plate is horizontally penetrated on the mounting block, and a telescopic cylinder is fixedly installed on the upper end of the top plate, and the telescopic end of the telescopic cylinder is fixedly connected to the upper end of the lifting plate, and two end blocks are fixedly connected to the lower end of the top plate, and a third threaded rod is rotatably connected between the two end blocks, and a threaded sleeve block is threadedly sleeved on the third threaded rod, and the lower end of the threaded sleeve block passes through the mounting block, and a fourth motor that drives the third threaded rod to rotate is fixedly installed on the lower end of the top plate.

[0008] In the above-mentioned external cylindrical grinder for producing hydraulic cylinders of dump trucks, the distance between the partition block and the left inner wall of the movable groove is the same as the lateral width of the movable block, and movable openings are formed between every two partition blocks and between the front and rear partition blocks and the front and rear inner walls of the movable groove, and the longitudinal width of each movable opening is the same as the longitudinal width of the movable block.

[0009] In the above-mentioned external cylindrical grinder for producing hydraulic cylinders of dump trucks, the front and rear ends of the first clamping block are fixedly connected with connecting plates, the right ends of the two connecting plates respectively extend to the front and rear positions of the second clamping block, and the two connecting plates are laterally provided with transverse sliding grooves on the opposite sides. The front and rear ends of the second clamping block are fixedly connected with sliders, and the ends of the two sliders away from the second clamping block are respectively slidably connected in the two transverse sliding grooves. The lower end of the second clamping block is provided with two moving wheels, and the second clamping block is in rolling contact with the processing table through the moving wheels.

[0010] In the above-mentioned external cylindrical grinder for producing hydraulic cylinders of dump trucks, the lateral pushing mechanism includes a block groove opened on the left inner wall of the moving groove and below the partition block, a push block is provided in the block groove, a T-shaped slide groove is longitudinally opened on the right side wall of the push block, the left end of the moving block is fixedly connected to a T-shaped block sliding in the T-shaped slide groove, the front and rear inner walls of the moving groove are both provided with driving grooves connected to the block groove, the front and rear ends of the push block are respectively slidably connected in the two driving grooves, a first threaded rod is rotatably connected between the left and right inner walls of the driving groove located on the rear side, the first threaded rod passes through the push block and is threadedly connected thereto, and a second motor that drives the first threaded rod to rotate is fixedly installed on the left end of the processing table.

[0011] In the above-mentioned external cylindrical grinder for producing hydraulic cylinders of dump trucks, the longitudinal moving mechanism includes two blocks fixed to the upper end of the processing table and spaced apart in the front and rear, the two blocks are located on the left side of the first clamping block, and the two blocks are connected to the second threaded rod on the opposite sides for rotation therewith. A third motor for driving the second threaded rod to rotate is fixedly installed on the upper end of the processing table, and a semi-circular arc threaded block is fixedly connected to the left side wall of the first clamping block, and the semi-circular arc threaded block is in contact with the second threaded rod and is threadedly connected thereto.

[0012] In the above-mentioned cylindrical grinder for producing the hydraulic cylinder of a dump truck, a baffle is fixedly connected between the top plate and the partition plate, and the left end of the lifting plate is slidably fitted with the right side wall of the baffle.

[0013] Compared with the existing technology, the advantages of this cylindrical grinder for the production of hydraulic cylinders for dump trucks are:

[0014] By setting three grinding blocks of different specifications at the same time, the positions of the three are made to correspond to the position of the moving port below, and then, under the cooperation of the horizontal pushing mechanism and the longitudinal moving mechanism, the rod to be ground can be moved to the bottom of the corresponding grinding block according to the grinding process, and the grinding work of the corresponding process can be carried out. During the process, there is no need for manual disassembly and assembly of the rod or replacement of the grinding blocks, which greatly improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural perspective view of the front side of a cylindrical grinder for producing a hydraulic cylinder for a dump truck proposed by the present invention;

[0016] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0017] Figure 3 This is a partial structural schematic diagram of a top view of a processing table in a cylindrical grinder for producing a hydraulic cylinder for a dump truck proposed by the present invention;

[0018] Figure 4 The present invention provides a schematic structural diagram of the side surface of a first clamping block in a cylindrical grinder for producing a hydraulic cylinder for a dump truck.

[0019] In the figure: 1 processing table, 2 support rod, 3 top plate, 4 partition, 5 moving groove, 6 moving block, 7 partition block, 8 first clamping block, 9 second clamping block, 10 rotating block, 11 electric clamp, 12 connecting plate, 13 transverse slide, 14 slider, 15 first motor, 16 push block, 17 T-block, 18 first threaded rod, 19 second motor, 20 stopper, 21 second threaded rod, 22 third motor, 23 semicircular arc threaded block, 24 movable mouth, 25 mounting block, 26 mounting rod, 27 grinding block, 28 lifting plate, 29 baffle, 30 telescopic cylinder, 31 third threaded rod, 32 threaded sleeve block, 33 fourth motor. DETAILED DESCRIPTION

[0020] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0021] Example

[0022] Reference Figure 1-4 A cylindrical grinder for producing a hydraulic cylinder of a dump truck comprises a processing table 1, wherein four support rods 2 distributed in a rectangular shape are fixedly connected to the upper end of the processing table 1, a top plate 3 is fixedly connected to the upper ends of the four support rods 2, a partition plate 4 is fixedly connected between the four support rods 2 and below the top plate 3, a moving groove 5 is opened at the upper end of the processing table 1, a rectangular moving block 6 is slidably connected in the moving groove 5, three partition blocks 7 which are evenly spaced longitudinally and whose upper end faces are flush with the upper end of the processing table 1 are fixedly connected to the inner wall on the right side of the moving groove 5, the partition block 7 is spaced from the inner wall on the left side of the moving groove 5, and the upper end of the moving block 6 extends out of the moving groove 5 and is fixedly connected with a first clamping block 8, a second clamping block 9 is provided on the upper end of the processing table 1 and on the right side of the first clamping block 8, the first clamping block 8 and the second clamping block 9 are both coaxially rotatably connected with a rotating block 10 at the center position, and electric clamps 11 are provided on the opposite sides of the two rotating blocks 10, and a first motor 15 is fixedly installed on the left end of the first clamping block 8 to drive the corresponding rotating block 10 to rotate, and the built-in rod of the hydraulic cylinder of the dump truck with grinding processing is clamped and fixed between the first clamping block 8 and the second clamping block 9 through the two electric clamps 11, and can be driven by the first motor 15 to rotate, so as to facilitate its grinding work.

[0023] The front and rear ends of the first clamping block 8 are fixedly connected with connecting plates 12, and the right ends of the two connecting plates 12 extend to the front and rear positions of the second clamping block 9 respectively. The two connecting plates 12 have transverse sliding grooves 13 opened transversely on the opposite sides. The front and rear ends of the second clamping block 9 are fixedly connected with sliders 14, and the ends of the two sliders 14 away from the second clamping block 9 are respectively slidably connected in the two transverse sliding grooves 13. Two moving wheels are provided at the lower end of the second clamping block 9, and the second clamping block 9 is in rolling contact with the processing table 1 through the moving wheels. When the first clamping block 8 is stationary, the second clamping block 9 can be pushed to move transversely, thereby adjusting the distance between the first clamping block 8 and the second clamping block 9, thereby clamping and fixing rods to be polished of different lengths.

[0024] The spacing between the partition block 7 and the left inner wall of the movable groove 5 is the same as the lateral width of the movable block 6. A movable opening is formed between every two partition blocks 7 and between the front and rear partition blocks 7 and the front and rear inner walls of the movable groove 5. The longitudinal width of each movable opening is the same as the longitudinal width of the movable block 6. The movable block 6 can only move at the position separated by the movable groove 5 and the partition block 7, and when the movable block 6 moves, the rod clamped by the first clamping block 8 and the second clamping block 9 also moves accordingly.

[0025] A lateral pushing mechanism is provided in the movable groove 5, and the lateral pushing mechanism includes a block groove opened on the left inner wall of the movable groove 5 and below the partition block 7. A push block 16 is provided in the block groove. A T-shaped slide groove is longitudinally opened on the right side wall of the push block 16. The left end of the movable block 6 is fixedly connected to a T-shaped block 17 sliding in the T-shaped slide groove. The setting of the T-shaped block 17 and the T-shaped slide groove connects the movable block 6 and the push block 16 together, and the movable block 6 can move longitudinally along the push block 16. Driving grooves connected to the block grooves are provided on the front and rear inner walls of the movable groove 5. The front and rear ends of the push block 16 are respectively slidably connected in the two driving grooves. A first threaded rod 18 is rotatably connected between the left and right inner walls of the driving groove located on the rear side. The first threaded rod 18 penetrates the push block 16 and is threadedly connected thereto. A second motor 19 that drives the first threaded rod 18 to rotate is fixedly installed on the left end of the processing table 1. The second motor 19 can drive the push block 16 to move laterally through the first threaded rod 18, thereby using the push block 16 to push the movable block 6 to move laterally to change the lateral position of the rod.

[0026] A longitudinal moving mechanism is provided at the upper end of the processing table 1, and the longitudinal moving mechanism includes two blocks 20 fixed at the upper end of the processing table 1 and spaced apart from each other. The two blocks 20 are both located on the left side of the first clamping block 8, and the two blocks 20 are connected to the second threaded rod 21 on the opposite sides for rotation. A third motor 22 for driving the second threaded rod 21 to rotate is fixedly installed at the upper end of the processing table 1, and a semi-circular thread block 23 is fixedly connected to the left side wall of the first clamping block 8. The semi-circular thread block 23 contacts the second threaded rod 21 and is threadedly connected thereto. The semi-circular thread block 23 is threadedly connected to the second threaded rod 21 through a semi-arc thread groove, and can then be driven by the second threaded rod 21. When the moving block 6 and the pushing block 16 are both located at the leftmost end of the moving groove 5, the semicircular arc threaded block 23 is threadedly connected to the second threaded rod 21. At this time, the third motor 22 can drive the semicircular arc threaded block 23 through the second threaded rod 21 to longitudinally move the rod clamped by the first clamping block 8 and the second clamping block 9. The longitudinal position of the moving block 6 can be adjusted to move it to the corresponding moving opening.

[0027] The partition 4 is provided with a movable opening 24 at a corresponding position above the movable groove 5, and a mounting block 25 is provided above the movable opening 24. The lower end of the mounting block 25 is fixedly connected with three mounting rods 26 evenly arranged in the longitudinal direction. The lower ends of the three mounting rods 26 all pass through the movable opening 24 and are fixedly connected with three grinding blocks 27 of different specifications, which are used for grinding work in three processes. The positions of the three grinding blocks 27 correspond to the positions of the three movable openings located at the rear side. A lifting plate 28 is horizontally passed through the mounting block 25, and a telescopic cylinder 30 is fixedly installed on the upper end of the top plate 3. The telescopic end of the telescopic cylinder 30 is fixedly connected to the upper end of the lifting plate 28. A baffle 29 is fixedly connected between the top plate 3 and the partition 4. The left end of the lifting plate 28 is slidably fitted with the right side wall of the baffle 29. The baffle 29 plays a limiting role. In cooperation with the telescopic cylinder 30, the lifting plate 28 can drive the mounting block 25 to rise and fall stably, so that the grinding block 27 contacts the rod or stays away from the rod.

[0028] Specifically, when performing grinding work of different processes on the rod, the movable block 6 can be moved to each movable opening through the cooperation of the lateral pushing mechanism and the longitudinal moving mechanism, so that the rod can also be moved to the bottom of the corresponding grinding block 27 at the same time to perform the corresponding grinding work. When the movable block 6 moves to the frontmost movable opening, the rod can be removed or clamped.

[0029] Two end blocks are fixedly connected to the lower end of the top plate 3, and a third threaded rod 31 is rotatably connected between the two end blocks. A threaded sleeve block 32 is threadedly sleeved on the third threaded rod 31, and the lower end of the threaded sleeve block 32 passes through the mounting block 25. A fourth motor 33 for driving the third threaded rod 31 to rotate is fixedly installed at the lower end of the top plate 3. The fourth motor 33 can drive the third threaded rod 31 to rotate, thereby utilizing the threaded sleeve block 32 to drive the mounting block 25 to move, so as to change the lateral position of the grinding block 27, thereby facilitating the grinding of rods of different lengths.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cylindrical grinding machine for producing a hydraulic cylinder of a dump truck, comprising a processing table (1), characterized in that: The upper end of the processing table (1) is fixedly connected to four support rods (2) distributed in a rectangular shape, the upper ends of the four support rods (2) are commonly fixedly connected to a top plate (3), a partition plate (4) is fixedly connected between the four support rods (2) and below the top plate (3), a moving groove (5) is opened at the upper end of the processing table (1), a rectangular moving block (6) is slidably connected in the moving groove (5), three partition blocks (7) arranged evenly spaced in the longitudinal direction and with upper end surfaces flush with the upper end of the processing table (1) are fixedly connected to the right inner wall of the moving groove (5), the partition block (7) is spaced from the left inner wall of the moving groove (5), and the A moving groove (5) extends from the upper end of the moving block (6) and is fixedly connected to a first clamping block (8); a second clamping block (9) is provided at the upper end of the processing table (1) and on the right side of the first clamping block (8); the first clamping block (8) and the second clamping block (9) are both coaxially rotatably connected to a rotating block (10) at their center positions; electric clamps (11) are provided on opposite sides of the two rotating blocks (10); a first motor (15) for driving the corresponding rotating block (10) to rotate is fixedly installed at the left end of the first clamping block (8); a lateral pushing mechanism is provided in the moving groove (5); and a longitudinal moving mechanism is provided at the upper end of the processing table (1); The partition plate (4) is provided with a movable opening (24) at a corresponding position above the movable groove (5); a mounting block (25) is provided above the movable opening (24); the lower end of the mounting block (25) is fixedly connected with three mounting rods (26) evenly arranged in the longitudinal direction; the lower ends of the three mounting rods (26) all pass through the movable opening (24) and are fixedly connected with three grinding blocks (27) of different specifications; a lifting plate (28) is horizontally passed through the mounting block (25); and a stretching plate (28) is fixedly installed on the upper end of the top plate (3). The telescopic cylinder (30) is fixedly connected to the upper end of the lifting plate (28), and the lower end of the top plate (3) is fixedly connected to two end blocks, and a third threaded rod (31) is rotatably connected between the two end blocks, and a threaded sleeve block (32) is threadedly sleeved on the third threaded rod (31), and the lower end of the threaded sleeve block (32) passes through the mounting block (25), and a fourth motor (33) for driving the third threaded rod (31) to rotate is fixedly installed on the lower end of the top plate (3).

2. The cylindrical grinding machine for producing a hydraulic cylinder for a dump truck according to claim 1, characterized in that: The spacing between the partition block (7) and the left inner wall of the movable groove (5) is the same as the transverse width of the movable block (6), and a movable opening is formed between every two partition blocks (7) and between the partition blocks (7) at the front and rear ends and the front and rear inner walls of the movable groove (5), and the longitudinal width of each movable opening is the same as the longitudinal width of the movable block (6).

3. The cylindrical grinding machine for producing a hydraulic cylinder for a dump truck according to claim 1, characterized in that: The front and rear ends of the first clamping block (8) are fixedly connected with connecting plates (12), the right ends of the two connecting plates (12) respectively extend to the front and rear positions of the second clamping block (9), and the two connecting plates (12) are transversely provided with transverse sliding grooves (13) on the opposite sides. The front and rear ends of the second clamping block (9) are fixedly connected with sliding blocks (14), and the ends of the two sliding blocks (14) away from the second clamping block (9) are respectively slidably connected in the two transverse sliding grooves (13). The lower end of the second clamping block (9) is provided with two moving wheels, and the second clamping block (9) is in rolling contact with the processing table (1) through the moving wheels.

4. The cylindrical grinding machine for producing a hydraulic cylinder for a dump truck according to claim 1, characterized in that: The lateral pushing mechanism comprises a block groove which is provided on the left inner wall of the movable groove (5) and below the partition block (7); a push block (16) is provided in the block groove; a T-shaped slide groove is longitudinally provided on the right wall of the push block (16); a T-shaped block (17) which slides in the T-shaped slide groove is fixedly connected to the left end of the movable block (6); a driving groove which is connected to the block groove is provided on the front and rear inner walls of the movable groove (5); front and rear ends of the push block (16) are respectively slidably connected to the two driving grooves; a first threaded rod (18) is rotatably connected between the left and right inner walls of the driving groove located at the rear side; the first threaded rod (18) passes through the push block (16) and is threadedly connected thereto; a second motor (19) which drives the first threaded rod (18) to rotate is fixedly installed at the left end of the processing table (1).

5. The cylindrical grinding machine for producing a hydraulic cylinder for a dump truck according to claim 1, characterized in that: The longitudinal moving mechanism comprises two stoppers (20) fixed to the upper end of the processing table (1) and arranged with a front-to-back spacing, the two stoppers (20) are both located on the left side of the first clamping block (8), the two stoppers (20) are rotatably connected to the second threaded rod (21) on the opposite side of the two stoppers (20), a third motor (22) for driving the second threaded rod (21) to rotate is fixedly installed on the upper end of the processing table (1), a semicircular arc threaded block (23) is fixedly connected to the left side wall of the first clamping block (8), and the semicircular arc threaded block (23) is in contact with the second threaded rod (21) and is threadedly connected thereto.

6. The cylindrical grinding machine for producing a hydraulic cylinder for a dump truck according to claim 1, characterized in that: A baffle (29) is fixedly connected between the top plate (3) and the partition plate (4), and the left end of the lifting plate (28) is slidably fitted with the right side wall of the baffle (29).

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