An electro-hydraulic direct drive transmission device that is easy to maintain

Abstract

The present invention relates to the field of electro-hydraulic transmission devices, specifically an electro-hydraulic direct-drive transmission device that is easy to maintain, comprising a workbench, a hydraulic transmission column and a cross tube, wherein four hydraulic transmission columns are arranged under the workbench, and the four hydraulic transmission columns are connected by a cross tube in the middle, and telescopic blocks are provided at the four outlets of the cross tube, and a collar is fixedly connected to the upper side of the cross tube, an adjustment ring is installed on the collar, and a connecting conduit is provided in the middle of the collar; the beneficial effect is: the present invention proposes an electro-hydraulic direct-drive transmission device that is easy to maintain, and optimizes the structure of the traditional electro-hydraulic direct-drive transmission device to make it more convenient to use.

Description

Technical Field

[0001] The present invention relates to the field of electro-hydraulic transmission devices, and in particular to an electro-hydraulic direct-drive transmission device that is easy to maintain. Background Art

[0002] The electro-hydraulic direct-drive transmission device is a structure that drives the hydraulic pump to drive the hydraulic transmission column through electrical signal transmission. The simplest example is the electrically controlled lifting workbench. This workbench requires an electrically controlled switch to control the lifting of the workbench. In the prior art, the hydraulic transmission device of this workbench is mostly an integrated structure to ensure the sealing structure. The only part of the hydraulic transmission column that can be connected to the outside world is the inlet connected to the hydraulic pump. The inlet is too small to detect its interior. The hydraulic transmission column is extremely cumbersome to disassemble and assemble. It is also inconvenient to repair and maintain the interior of the hydraulic transmission column. For this reason, the present invention proposes an electro-hydraulic direct-drive transmission device that is easy to maintain. Summary of the Invention

[0003] The object of the present invention is to provide an electro-hydraulic direct-drive transmission device that is easy to maintain, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an electro-hydraulic direct-drive transmission device that is easy to maintain, comprising a workbench, a hydraulic transmission column and a cross tube, wherein four hydraulic transmission columns are provided under the workbench, and the four hydraulic transmission columns are connected by a cross tube in the middle, and telescopic blocks are provided at the four outlets of the cross tube, and a collar is fixedly connected to the upper side of the cross tube, an adjustment ring is installed on the collar, and a connecting conduit is provided in the middle of the collar.

[0005] Preferably, the connecting conduit is externally connected to a hydraulic pump, and a corresponding electrical structure device is provided inside the hydraulic pump.

[0006] Preferably, a through hole is provided on the bottom of the hydraulic transmission column, the position and direction of the through hole match the position and direction of the cross tube, a sealing ring is installed in the through hole, and the size of the sealing ring corresponds to the outlet of the telescopic block.

[0007] Preferably, the cross tube is a cross-shaped hollow long tube, and an entrance is provided on the upper end surface of the central intersection of the cross tube, which is connected to the interior of the cross tube. Limiting grooves are symmetrically provided on both sides of the four outlets of the cross tube, and the limiting grooves are rectangular grooves. A perforation is provided on the upper end surface of the four outlets of the cross tube, and a sealing groove is provided on the front and rear inner walls of the perforation. The perforation is a rectangular structure and the perforation passes through the upper end surface of the cross tube, and the sealing groove is a rectangular groove.

[0008] Preferably, the collar is composed of two inner and outer rings, the inner ring of the collar and the outer ring of the collar are fixedly connected through a circular plate at the bottom, and a circumferential array of elastic holes is provided on the side surface of the outer ring of the collar, the elastic holes are a cross-shaped structure and the elastic holes pass through the side surface of the collar, a guide column is fixedly connected in the lower notch of the elastic hole, a spring is wound around the outside of the guide column, the inner ring of the collar is a hollow ring, a flat scroll spring is provided in the inner cavity of the collar, one end of the flat scroll spring is fixed on the inner wall of the inner cavity of the collar, and the other end of the flat scroll spring is fixed on the outer wall of the L-plate, the L-plate is a ring with an L-shaped cross-section and a matching groove is provided in a circumferential array on the bottom edge of the L-plate, the L-plate passes through the inner ring of the collar and the L-plate is rotatably inserted into the inner ring of the collar.

[0009] Preferably, the adjustment ring is an annular structure with a T-shaped cross-section, and a matching protrusion is provided in a circumferential array below the inner side surface of the adjustment ring, and the matching protrusion cooperates with the matching groove. A control groove is provided along the outer wall of the adjustment ring, and the control groove is wavy. The adjustment ring is inserted between the inner ring of the sleeve and the outer ring of the sleeve, and the matching protrusion is inserted into the matching groove.

[0010] Preferably, the telescopic block is a hollow cuboid that is transparent at the front and back, the outlet of the telescopic block cooperates with the through hole and the sealing ring in the through hole matches the outlet of the telescopic block, the left and right sides of the tail of the telescopic block are fixedly connected to the limiting blocks, the limiting blocks are rectangular blocks, the limiting blocks are located in the limiting grooves and the limiting blocks slide in cooperation with the limiting grooves, the top of the telescopic block is fixedly connected with a sealing plate, the sealing plate is a rectangular plate and the sealing plate is located in the sealing groove, the sealing groove slides in cooperation with the sealing plate, the upper end face of the sealing plate is fixedly connected with an L-shaped connecting plate, the other end of the L-shaped connecting plate is fixedly connected with an elastic block, the lower end face of the elastic block is fixedly connected with a guide block, the elastic block is located in the elastic hole, the guide block is located in the lower notch of the elastic hole and the guide column passes through the guide block.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The present invention proposes an electro-hydraulic direct-drive transmission device that is easy to maintain, and optimizes the structure of the traditional electro-hydraulic direct-drive transmission device. By utilizing a cross tube and the structure thereon, it is convenient to work on four hydraulic transmission columns at the same time, and it is also convenient to install and disassemble the cross tube and the structure thereon on the hydraulic transmission column.

[0013] 2. The present invention proposes an electro-hydraulic direct-drive transmission device that is easy to maintain, and optimizes the structure of the traditional electro-hydraulic direct-drive transmission device. Compared with the electro-hydraulic transmission structure of the transmission, the present invention redesigns the hydraulic transmission components to make their installation and disassembly convenient and quick. At the same time, under the premise of easy disassembly of parts, the device can also be repaired and maintained from the through hole inward. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention.

[0015] Figure 2 It is a structural schematic diagram of the hydraulic transmission column of the present invention.

[0016] Figure 3 Schematic diagram of the structure of the cross tube of the present invention.

[0017] Figure 4 It is a structural explosion diagram of the cross tube of the present invention.

[0018] Figure 5 It is a structural explosion diagram of the collar of the present invention.

[0019] Figure 6 It is a structural cross-sectional view of the cross tube of the present invention.

[0020] Figure 7 It is a structural cross-sectional view of the telescopic block of the present invention.

[0021] In the figure: 1. workbench; 2. hydraulic transmission column; 3. cross tube; 4. through hole; 5. telescopic block; 6. collar; 7. adjustment ring; 8. connecting guide tube; 9. matching protrusion; 10. control groove; 11. elastic hole; 12. guide column; 13. L-plate; 14. flat scroll spring; 15. limit groove; 16. through hole; 17. sealing groove; 18. inlet; 19. limit block; 20. sealing plate; 21. L-shaped connecting plate; 22. elastic block; 23. guide block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention are described clearly and completely below. The embodiments of the present invention and all other embodiments obtained by persons of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0023] See also Figures 1 to 7 The present invention provides a technical solution: an electro-hydraulic direct-drive transmission device that is easy to maintain, comprising a workbench 1, a hydraulic transmission column 2 and a cross tube 3. Four hydraulic transmission columns 2 are provided under the workbench 1, and the four hydraulic transmission columns 2 are connected by a cross tube 3 in the middle. Telescopic blocks 5 are provided at the four outlets of the cross tube 3. A collar 6 is fixedly connected to the upper side of the cross tube 3, an adjusting ring 7 is installed on the collar 6, and a connecting conduit 8 is provided in the middle of the collar 6.

[0024] The connecting conduit 8 is connected to an external hydraulic pump, and a corresponding electrical structure device is provided in the hydraulic pump. By transmitting an electrical signal to the electrical structure device, the electrical structure device reacts to control the hydraulic pump to adjust the output hydraulic pressure, so that the liquid flows into the hydraulic transmission column 2 through the cross pipe 3, thereby controlling the extension and retraction of the hydraulic transmission column 2 and the height of the workbench 1.

[0025] A through hole 4 is provided on the bottom of the hydraulic transmission column 2. The position and direction of the through hole 4 match the position and direction of the cross tube 3, which facilitates the insertion of the telescopic block 5 in the cross tube 3 into the through hole 4. A sealing ring is installed in the through hole 4. The size of the sealing ring corresponds to the outlet of the telescopic block 5, so that the liquid in the cross tube 3 can flow into the hydraulic transmission column 2 and the liquid will not leak from the through hole 4.

[0026] The cross tube 3 is a cross-shaped hollow long tube. An inlet 18 is provided on the upper end surface of the central intersection of the cross tube 3. The inlet 18 is connected to the interior of the cross tube 3 to facilitate the flow of liquid from the inlet 18 into the cross tube 3. The four outlets of the cross tube 3 are symmetrically provided with limiting grooves 15 on both sides. The limiting grooves 15 are rectangular grooves. The upper end surfaces of the four outlets of the cross tube 3 are provided with through-holes 16. Sealing grooves 17 are provided on the front and rear inner walls of the through-holes 16. The through-holes 16 are of a rectangular structure and pass through the upper end surface of the cross tube 3. The sealing grooves 17 are rectangular grooves.

[0027] The collar 6 is composed of two inner and outer rings. The inner ring of the collar 6 is fixedly connected to the outer ring of the collar 6 through a circular plate at the bottom. The collar 6 is fixed to the cross tube 3 by bolting the bottom circular plate to the center of the upper end face of the cross tube 3. An elastic hole 11 is provided in a circumferential array on the side surface of the outer ring of the collar 6. The elastic hole 11 is a cross-shaped structure and passes through the side surface of the collar 6. A guide column 12 is fixedly connected to the lower notch of the elastic hole 11. A spring is wound around the outside of the column 12. The inner ring of the collar 6 is a hollow ring. A flat spiral spring 14 is provided in the inner cavity of the collar 6. One end of the flat spiral spring 14 is fixed to the inner wall of the inner cavity of the collar 6. The other end of the flat spiral spring 14 is fixed to the outer wall of the L-plate 13. The L-plate 13 is a ring with an L-shaped cross-section and a matching groove is provided in a circumferential array on the bottom edge of the L-plate 13. The L-plate 13 passes through the inner ring of the collar 6 and is rotatably inserted into the inner ring of the collar 6.

[0028] The adjusting ring 7 is an annular structure with a T-shaped cross-section. A matching protrusion 9 is provided in a circumferential array below the inner side surface of the adjusting ring 7. The matching protrusion 9 cooperates with the matching groove. A control groove 10 is provided along the outer wall of the adjusting ring 7. The control groove 10 is wavy. The adjusting ring 7 is inserted between the inner ring of the sleeve 6 and the outer ring of the sleeve 6 and the matching protrusion 9 is inserted into the matching groove. The rotating adjusting ring 7 drives the L plate 13 to rotate, thereby causing the flat scroll spring 14 to contract. After the adjusting ring 7 is released, the flat scroll spring 14 restores the rotation angle of the adjusting ring 7.

[0029] The telescopic block 5 is a hollow cuboid that is transparent from front to back. The outlet of the telescopic block 5 cooperates with the through hole 4 and the sealing ring in the through hole 4 matches the outlet of the telescopic block 5, which makes it easy for the telescopic block 5 to be inserted into the through hole 4 and prevents liquid leakage. The left and right sides of the tail of the telescopic block 5 are fixedly connected to the limiting blocks 19, which are cuboid blocks. The limiting blocks 19 are located in the limiting grooves 15 and the limiting blocks 19 slide with the limiting grooves 15 to achieve the outlet sealing of the cross tube 3 between the tail of the telescopic block 5 and the limiting blocks 19, thereby preventing liquid from leaking from the sides of the telescopic block 5 and the telescopic block 5 telescoping at the outlet of the cross tube 3. The top of the telescopic block 5 is fixedly connected with a sealing plate 20, which is a cuboid plate and is located in the sealing groove 17. The sealing groove 17 slides with the sealing plate 20 to achieve the sealing plate 20 in the sealing groove 17. The inner slide and the sealing plate 20 completely cover the perforation 16 to prevent liquid from leaking from the upper end surface of the cross tube 3. The upper end surface of the sealing plate 20 is fixedly connected to an L-shaped connecting plate 21. The other end of the L-shaped connecting plate 21 is fixedly connected to an elastic block 22. The lower end surface of the elastic block 22 is fixedly connected to a guide block 23. The elastic block 22 is located in the elastic hole 11. The guide block 23 is located in the lower side notch of the elastic hole 11 and the guide column 12 passes through the guide block 23, so that the guide block 23 carries the elastic block 22 and slides back and forth along the guide column 12 in the elastic hole 11. During this period, the elastic block 22 always supports the outer side of the adjusting ring 7 and follows the depth of the outer side of the adjusting ring 7 to expand and contract, so that the expansion block 5 is inserted into the through hole 4 by controlling the rotation of the adjusting ring 7. The overall installation and disassembly of the device is convenient and quick, thereby making the device maintenance more convenient.

[0030] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and alterations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An electro-hydraulic direct drive transmission device that is easy to maintain, comprising a workbench (1), a hydraulic transmission column (2) and a cross tube (3), characterized in that: Four hydraulic transmission columns (2) are provided below the workbench (1), and the four hydraulic transmission columns (2) are connected in the middle by a cross tube (3). Telescopic blocks (5) are provided at the four outlets of the cross tube (3). A collar (6) is fixedly connected to the upper side of the cross tube (3), and an adjusting ring (7) is installed on the collar (6). A connecting conduit (8) is provided in the middle of the collar (6); The cross tube (3) is a cross-shaped hollow long tube. An inlet (18) is provided on the upper end surface of the central intersection of the cross tube (3). The inlet (18) is connected to the interior of the cross tube (3). Limiting grooves (15) are symmetrically provided on both sides of the four outlets of the cross tube (3). The limiting grooves (15) are rectangular parallelepiped grooves. A perforation (16) is provided on the upper end surface of the four outlets of the cross tube (3). A sealing groove (17) is provided on the front and rear inner walls of the perforation (16). The perforation (16) is a rectangular parallelepiped structure and passes through the upper end surface of the cross tube (3). The sealing groove (17) is a rectangular parallelepiped groove. The sleeve (6) is composed of two inner and outer rings. The inner ring of the sleeve (6) is fixedly connected to the outer ring of the sleeve (6) through a circular plate at the bottom. The outer ring of the sleeve (6) is provided with elastic holes (11) in a circumferential array on the side surface. The elastic holes (11) are cross-shaped and pass through the side surface of the sleeve (6). A guide column (12) is fixedly connected to the lower notch of the elastic hole (11). A spring is wound around the outer side of the guide column (12). The inner ring of the sleeve (6) is fixedly connected to the outer ring of the sleeve (6). The ring is a hollow circular ring. A plane scroll spring (14) is provided in the inner cavity of the collar (6). One end of the plane scroll spring (14) is fixed on the inner wall of the inner cavity of the collar (6). The other end of the plane scroll spring (14) is fixed on the outer wall of the L-plate (13). The L-plate (13) is a circular ring with an L-shaped cross section and a matching groove is provided in a circumferential array on the bottom edge of the L-plate (13). The L-plate (13) passes through the inner ring of the collar (6) and is rotatably plugged into the inner ring of the collar (6).

2. The electro-hydraulic direct drive transmission device with easy maintenance according to claim 1, characterized in that: The connecting conduit (8) is externally connected to a hydraulic pump, and a corresponding electrical structure device is provided in the hydraulic pump.

3. The electro-hydraulic direct drive transmission device with easy maintenance according to claim 2, characterized in that: A through hole (4) is provided on the bottom of the hydraulic transmission column (2), the position and direction of the through hole (4) matches the position and direction of the cross tube (3), and a sealing ring is installed in the through hole (4), the size of the sealing ring corresponding to the outlet of the telescopic block (5).

4. The electro-hydraulic direct drive transmission device with easy maintenance according to claim 3, characterized in that: The adjusting ring (7) is an annular structure with a T-shaped cross section. A matching protrusion (9) is provided in a circumferential array below the inner side surface of the adjusting ring (7). The matching protrusion (9) matches with the matching groove. A control groove (10) is provided along the outer wall of the adjusting ring (7). The control groove (10) is wavy. The adjusting ring (7) is inserted between the inner ring of the collar (6) and the outer ring of the collar (6), and the matching protrusion (9) is inserted into the matching groove.

5. The electro-hydraulic direct drive transmission device with easy maintenance according to claim 4, characterized in that: The telescopic block (5) is a hollow cuboid that is transparent from front to back. The outlet of the telescopic block (5) matches the through hole (4) and the sealing ring in the through hole (4) matches the outlet of the telescopic block (5). The left and right sides of the tail of the telescopic block (5) are fixedly connected to the limiting blocks (19). The limiting blocks (19) are cuboid blocks. The limiting blocks (19) are located in the limiting groove (15) and the limiting blocks (19) and the limiting groove (15) are slidably matched. The top of the telescopic block (5) is fixedly connected to a sealing plate (20). The sealing plate (20) is a cuboid plate. The sealing plate (20) is located in the sealing groove (17), the sealing groove (17) and the sealing plate (20) are slidably matched, the upper end surface of the sealing plate (20) is fixedly connected to the L-shaped connecting plate (21), the other end of the L-shaped connecting plate (21) is fixedly connected to the elastic block (22), the lower end surface of the elastic block (22) is fixedly connected to the guide block (23), the elastic block (22) is located in the elastic hole (11), the guide block (23) is located in the lower notch of the elastic hole (11), and the guide column (12) passes through the guide block (23).

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