A new type of electro-hydraulic push rod

Abstract

The present invention relates to the technical field of telescopic devices, and in particular to a novel electro-hydraulic push rod. The novel electro-hydraulic push rod comprises a device housing, a telescopic housing and a drive housing are provided on the surface of the device housing, a control device is provided on the surface of the drive housing, a drive mechanism and a transmission mechanism are provided in the device housing, and a telescopic mechanism, a speed sensor and a clutch assembly are provided in the telescopic housing. By providing a clutch assembly, when the electro-hydraulic push rod fails, the engagement between the clutch gear and the clutch gear disc causes the telescopic screw to rotate, thereby causing the connecting block threadedly connected to the telescopic screw to slide toward one side of the push rod, thereby compensating for the push rod's retraction when the electro-hydraulic push rod fails, thereby avoiding accidental damage that may be caused by failure and improving the safety of the electro-hydraulic push rod during use.

Description

Technical Field

[0001] The present invention relates to the technical field of telescopic devices, and in particular to a novel electro-hydraulic push rod. Background Art

[0002] The electro-hydraulic push rod is a hydraulically driven manipulator that integrates mechanical, electrical and hydraulic functions. It is suitable for applications that require reciprocating push-pull linear motion. It can also be used in places where workpieces need to be raised, lowered or clamped, and can achieve centralized or automatic control in remote dangerous areas.

[0003] At present, the electro-hydraulic push rods on the market cannot operate after the motor or hydraulic cylinder is damaged, and the emergency response capability is poor. In addition, the electro-hydraulic push rods on the market currently do not have corresponding failure compensation mechanisms, which means that when the electro-hydraulic push rods fail, they may be damaged. In addition, the current electro-hydraulic push rods not only have a short stroke, but also work in a relatively rapid state during operation, which makes it difficult to accurately control the extension and contraction amount and has low safety performance.

[0004] Therefore, it is necessary to provide a new electro-hydraulic push rod to solve the above-mentioned technical problems. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a new type of electro-hydraulic push rod with failure compensation and high safety performance.

[0006] The novel electro-hydraulic push rod provided by the present invention comprises: a device box, a telescopic box is provided on the surface of the device box, a drive box is provided on the surface of the device box on one side of the telescopic box, the device box is connected to both the telescopic box and the drive box, a connector is movably connected to the surface of the device box on the opposite side of the telescopic box, and a control device is provided on the surface of the drive box;

[0007] A driving mechanism for providing a power source for the extension and retraction of the push rod is provided in the device housing and the driving housing;

[0008] A transmission mechanism for adjusting the transmission ratio of the drive mechanism is disposed in the device housing and is coupled to the drive mechanism;

[0009] A telescopic mechanism for performing telescopic extension of the push rod is provided in the telescopic box;

[0010] A speed sensor for sensing the movement speed of the telescopic mechanism is disposed in the telescopic box and is electrically connected to the control device. A sliding groove is provided on the side wall of the telescopic box;

[0011] The clutch assembly is used to compensate for the failure of the push rod and is arranged in the telescopic box, and the clutch assembly includes a C-shaped block, the C-shaped block is arranged on the inner wall surface of the telescopic box, and the surface of the C-shaped block is provided with a clutch motor, the output end of the clutch motor is fixedly connected with a clutch screw, the clutch screw is threadedly connected to a transmission block, the transmission block is slidingly connected to the C-shaped block, the transmission block is rotatably connected to the telescopic box, the other end of the transmission block is fixedly connected to a U-shaped plate, and the U-shaped plate is coupled and connected to a matching piece, and the matching piece is provided with a clutch gear at one end away from the device box, the clutch gear is meshed with a clutch toothed disk, the clutch toothed disk is fixedly connected to the telescopic screw, the telescopic screw is rotatably connected to the first fixed plate in the telescopic box, and the other end of the telescopic screw is threadedly connected to the telescopic mechanism, and the end of the matching piece close to the device box is fixedly connected with a matching shaft, and the matching shaft cooperates with the transmission mechanism.

[0012] Preferably, the driving mechanism includes a motor assembly and a hydraulic assembly, the motor assembly is arranged in the driving box, the motor assembly is fixedly connected to the driving box, the hydraulic assembly is arranged in the driving box, and the hydraulic assembly is fixedly connected to the driving box.

[0013] Preferably, the motor assembly includes a motor plate, a drive motor, a drive shaft and a drive gear, the motor plate is arranged in the drive housing, the motor plate is fixedly connected to the drive housing, the drive motor is arranged on the surface of the motor plate, the drive motor is electrically connected to the control device, the output end of the drive motor is fixedly connected to the drive shaft, the drive shaft is rotatably connected to the device housing, the drive gear is arranged on the surface of the drive shaft, and the drive gear is fixedly connected to the drive shaft.

[0014] Preferably, the hydraulic assembly includes a hydraulic plate, a liquid outlet cylinder, a liquid outlet pipe, a liquid return cylinder, a liquid return pipe and a two-way valve. The hydraulic plate is arranged in a drive box body, the hydraulic plate is fixedly connected to the drive box body, the liquid outlet cylinder is arranged on the surface of the hydraulic plate, the liquid outlet cylinder is electrically connected to the control device, the liquid outlet cylinder is communicated with the liquid outlet pipe, the other end of the liquid outlet pipe is communicated with the two-way valve, the two-way valve is communicated with the telescopic mechanism, the liquid return cylinder is arranged on the surface of the hydraulic plate, the liquid return cylinder is electrically connected to the control device, the liquid return cylinder is communicated with the liquid return pipe, the other end of the liquid return pipe is communicated with the two-way valve, the two-way valve is communicated with the telescopic mechanism, and the two-way valve is electrically connected to the control device.

[0015] Preferably, the transmission mechanism includes a transfer assembly and a speed change assembly, the transfer assembly is arranged in the device housing, the transfer assembly is rotatably connected to the device housing, the speed change assembly is arranged in the device housing, the speed change assembly is rotatably connected to the device housing, and the speed change assembly is coupled to the mating shaft.

[0016] Preferably, the transfer assembly includes a transfer shaft, a transfer gear and a speed regulating gear. The transfer shaft is rotatably connected to the device housing, the transfer gear is arranged on the surface of the transfer shaft, the transfer gear is fixedly connected to the transfer shaft, the transfer gear is meshed with the driving gear, the diameter of the transfer gear is larger than the diameter of the driving gear, the speed regulating gear is arranged on the surface of the transfer shaft, and the speed regulating gear is fixedly connected to the transfer shaft.

[0017] Preferably, the speed change assembly includes a speed change shaft, a fixed sleeve and a speed change gear, the fixed sleeve is arranged in the device housing, the fixed sleeve is fixedly connected to the device housing, one end of the speed change shaft is arranged in the fixed sleeve, the speed change shaft is rotatably connected to the fixed sleeve, the speed change gear is arranged on the surface of the speed change shaft, the speed change gear is fixedly connected to the speed change shaft, the speed change gear is meshed with the speed regulating gear, the diameter of the speed change gear is larger than the diameter of the speed regulating gear, a mating groove is opened in the other end of the speed change shaft, and the mating shaft is slidably connected to the mating groove.

[0018] Preferably, the telescopic mechanism includes a first-level telescopic component and a second-level telescopic component, the first-level telescopic component is threadedly engaged with the telescopic screw, the first-level telescopic component is slidingly connected to the telescopic box, the second-level telescopic component is arranged in the first-level telescopic component, and the second-level telescopic component is slidingly connected to the first-level telescopic component.

[0019] Preferably, the first-stage telescopic assembly includes a second fixed plate, a connecting block and a sliding block, the second fixed plate is arranged in the telescopic box body, the second fixed plate is fixedly connected to the telescopic box body, the connecting block is slidably connected to the second fixed plate, a thread groove is provided in the end of the connecting block close to the telescopic screw, the telescopic screw is threadedly connected to the thread groove, the connecting block is fixedly connected to the sliding block, the sliding block is slidably connected to the telescopic box body, a liquid outlet groove is provided in the end of the sliding block close to the connecting block, the liquid outlet groove is connected to a two-way valve connected to the liquid outlet pipe, and a sliding groove is provided in the end of the sliding block away from the connecting block.

[0020] Preferably, the secondary telescopic assembly includes a slider, a piston and an actuator rod, the slider is arranged in a sliding groove, the slider can slide in the sliding groove, the slider is slidably connected to the telescopic box, a return liquid groove is provided in the slider, the return liquid groove is connected to a two-way valve connected to the return liquid pipe, a sliding cavity is provided in the slider, the sliding cavity is connected to the liquid outlet groove and the return liquid groove, the piston is arranged in the sliding cavity, the piston can slide in the sliding cavity, the surface of the piston away from the liquid outlet groove is fixedly connected to the actuator rod, and the actuator rod is slidably connected to the slider.

[0021] Compared with the related art, the new electro-hydraulic push rod provided by the present invention has the following beneficial effects:

[0022] 1. By providing a clutch assembly, when the electro-hydraulic push rod fails, the meshing between the clutch gear and the clutch toothed disc causes the telescopic screw to rotate, thereby causing the connecting block threadedly connected to the telescopic screw to slide toward the side of the actuator rod, thereby compensating for the back retraction of the actuator rod when the electro-hydraulic push rod fails, avoiding accidental damage caused by failure and improving the safety of the electro-hydraulic push rod when in use;

[0023] 2. By providing a telescopic screw, a connecting block and a telescopic mechanism, the device can achieve multi-stage telescopic extension. Compared with the traditional electro-hydraulic push rod, the electro-hydraulic push rod has a long stroke, is safe and convenient to use, and can be hydraulically or electrically extended according to the needs of use;

[0024] 3. By providing a transfer component and a speed-changing component, the speed of the output end of the drive motor can be adjusted, thereby making the extension and retraction of the electro-hydraulic push rod smooth and stable, improving the safety of use and the precise control of its extension and retraction amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic structural diagram of a preferred embodiment of the novel electro-hydraulic push rod provided by the present invention;

[0026] Figure 2 A schematic diagram of the internal structure of the novel electro-hydraulic push rod provided by the present invention;

[0027] Figure 3 for Figure 1 A schematic diagram of the structure inside the device box shown;

[0028] Figure 4 A schematic diagram of a partial structure of a clutch assembly of a novel electro-hydraulic push rod provided by the present invention;

[0029] Figure 5 for Figure 2 A partial enlarged view of point A shown;

[0030] Figure 6 for Figure 2 A local enlarged view of point B is shown.

[0031] Numbers in the figure: 1. Device box; 2. Telescopic box; 3. Drive box; 4. Connecting piece; 5. Control device; 6. Speed ​​sensor; 7. Slide; 8. Clutch assembly; 801. C-shaped block; 802. Clutch motor; 803. Clutch screw; 804. Transmission block; 805. U-shaped plate; 806. Matching piece; 807. Clutch gear; 808. Clutch gear plate; 809. Telescopic screw; 810. Matching shaft; 9. Motor assembly; 901. Motor plate; 902. Drive motor; 903. Drive shaft; 904. Drive gear; 10. Hydraulic assembly; 1001. Hydraulic plate; 1002. Liquid discharge cylinder; 1003. Liquid discharge pipe; 1004. Liquid return cylinder ;1005, return liquid pipe;1006, two-way valve;11, transfer assembly;1101, transfer shaft;1102, transfer gear;1103, speed regulating gear;12, speed changing assembly;1201, speed changing shaft;1202, fixed sleeve;1203, speed changing gear;1204, matching groove;13, first-stage telescopic assembly;1301, second fixed plate;1302, connecting block;1303, sliding block;1304, threaded groove;1305, liquid outlet groove;1306, sliding groove;14, second-stage telescopic assembly;1401, slider;1402, piston;1403, actuator rod;1404, return liquid groove;1405, sliding chamber;15, first fixed plate. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0034] See also Figures 1 to 6, an embodiment of the present invention provides a new type of electro-hydraulic push rod, which includes: a device box 1, a telescopic box 2 is provided on the surface of the device box 1, a drive box 3 is provided on the surface of the device box 1 located on one side of the telescopic box 2, the device box 1 is connected to the telescopic box 2 and the drive box 3, the device box 1 is movably connected with a connecting piece 4 on the opposite side surface of the telescopic box 2, and a control device 5 is provided on the surface of the drive box 3, a driving mechanism for providing a power source for the telescopic extension of the push rod is arranged in the device box 1 and the drive box 3, a transmission mechanism for adjusting the transmission ratio of the driving mechanism is arranged in the device box 1, and the transmission mechanism is coupled to the driving mechanism, a telescopic mechanism for executing the extension and retraction of the push rod is arranged in the telescopic box 2, a speed sensor 6 for sensing the movement speed of the telescopic mechanism is arranged in the telescopic box 2, and the speed sensor 6 is electrically connected to the control device 5, a slide groove 7 is opened on the side wall of the telescopic box 2, and a clutch assembly 8 for compensating for push rod failure is arranged in the telescopic box 2, and The clutch assembly 8 includes a C-shaped block 801, which is arranged on the inner wall surface of the telescopic box 2. A clutch motor 802 is arranged on the surface of the C-shaped block 801. The output end of the clutch motor 802 is fixedly connected to a clutch screw 803. The clutch screw 803 is threadedly connected to a transmission block 804. The transmission block 804 is slidably connected to the C-shaped block 801. The transmission block 804 is rotatably connected to the telescopic box 2. The other end of the transmission block 804 is fixedly connected to a U-shaped plate 805. The U-shaped plate 805 is coupled to the transmission block 804. It is connected to a mating piece 806, and a clutch gear 807 is provided at the end of the mating piece 806 away from the device box 1. The clutch gear 807 is engaged with a clutch toothed disc 808. The clutch toothed disc 808 is fixedly connected to a telescopic screw 809. The telescopic screw 809 is rotatably connected to the first fixed plate 15 in the telescopic box 2. The other end of the telescopic screw 809 is threadedly connected to the telescopic mechanism. The end of the mating piece 806 close to the device box 1 is fixedly connected to a mating shaft 810, and the mating shaft 810 cooperates with the transmission mechanism.

[0035] In the embodiments of the present invention, see Figure 2 and Figure 3 The driving mechanism includes a motor assembly 9 and a hydraulic assembly 10. The motor assembly 9 is arranged in the driving box 3, and the motor assembly 9 is fixedly connected to the driving box 3. The hydraulic assembly 10 is arranged in the driving box 3, and the hydraulic assembly 10 is fixedly connected to the driving box 3.

[0036] Among them, the motor assembly 9 includes a motor plate 901, a drive motor 902, a drive shaft 903 and a drive gear 904. The motor plate 901 is arranged in the drive box 3, and the motor plate 901 is fixedly connected to the drive box 3. The drive motor 902 is arranged on the surface of the motor plate 901. The drive motor 902 is electrically connected to the control device 5. The output end of the drive motor 902 is fixedly connected to the drive shaft 903. The drive shaft 903 is rotatably connected to the device box 1. The drive gear 904 is arranged on the surface of the drive shaft 903, and the drive gear 904 is fixedly connected to the drive shaft 903.

[0037] Among them, the hydraulic assembly 10 includes a hydraulic plate 1001, a liquid discharge cylinder 1002, a liquid discharge pipe 1003, a liquid return cylinder 1004, a liquid return pipe 1005 and a two-way valve 1006. The hydraulic plate 1001 is arranged in the drive box 3, the hydraulic plate 1001 is fixedly connected to the drive box 3, the liquid discharge cylinder 1002 is arranged on the surface of the hydraulic plate 1001, the liquid discharge cylinder 1002 is electrically connected to the control device 5, and the liquid discharge cylinder 1002 is connected to the liquid discharge pipe 1003. The other end of the liquid outlet pipe 1003 is connected to the two-way valve 1006, the two-way valve 1006 is connected to the telescopic mechanism, the liquid return cylinder 1004 is arranged on the surface of the hydraulic plate 1001, the liquid return cylinder 1004 is electrically connected to the control device 5, the liquid return cylinder 1004 is connected to the liquid return pipe 1005, the other end of the liquid return pipe 1005 is connected to the two-way valve 1006, the two-way valve 1006 is connected to the telescopic mechanism, and the two-way valve 1006 is electrically connected to the control device 5.

[0038] It should be noted that: when the device fails, the speed sensor 6 senses that the moving speed of the slider 1401 is abnormal and exceeds the preset speed threshold. At this time, the control device 5 controls the clutch motor 802 and the drive motor 902 to start, thereby causing the clutch screw 803 fixedly connected to the output end of the clutch motor 802 to rotate, and through the threaded transmission cooperation between the clutch screw 803 and the transmission block 804, the U-shaped plate 805 fixedly connected to the transmission block 804 drives the matching piece 806 to move, thereby causing the clutch gear 807 to engage with the clutch toothed disc 808, and the output end of the drive motor 902 drives the drive shaft 903 fixedly connected thereto to rotate, thereby causing the drive gear 904 fixedly connected to the drive shaft 903 to rotate, and through the drive gear 904 and the center The meshing between the rotating gears 1102 causes the speed regulating gear 1103 provided on the surface of the rotating shaft 1101 to rotate, and the meshing between the speed regulating gear 1103 and the speed gear 1203 drives the speed shaft 1201 to rotate, thereby causing the matching shaft 810 slidingly connected to the speed shaft 1201 to rotate, thereby driving the matching piece 806 to rotate, and the meshing between the clutch gear 807 and the clutch toothed disc 808 causes the telescopic screw 809 to rotate, thereby causing the connecting block 1302 threadedly connected to the telescopic screw 809 to slide toward the side of the actuator rod 1403, thereby compensating for the backward retraction of the actuator rod 1403 when the electro-hydraulic push rod fails, avoiding accidental damage that may be caused by failure, and improving the safety of the electro-hydraulic push rod during use.

[0039] It should also be noted that the control device 5 and the speed sensor 6 here are both industrial control sensing elements commonly used in the prior art. The control device 5 here is integratedly designed through an industrial single-chip microcomputer or a PLC controller, and then programmed and powered on to receive signals from the speed sensor 6 to control the operation of the clutch motor 802, the drive motor 902 and other components electrically connected to the control device 5.

[0040] In the embodiments of the present invention, see Figure 2 and Figure 3 The transmission mechanism includes a transfer component 11 and a speed change component 12. The transfer component 11 is arranged in the device box 1, and the transfer component 11 is rotatably connected to the device box 1. The speed change component 12 is arranged in the device box 1, and the speed change component 12 is rotatably connected to the device box 1. The speed change component 12 is coupled to the mating shaft 810.

[0041] In the embodiments of the present invention, see Figure 2 and Figure 3The transfer assembly 11 includes a transfer shaft 1101, a transfer gear 1102 and a speed regulating gear 1103. The transfer shaft 1101 is rotatably connected to the device housing 1. The transfer gear 1102 is arranged on the surface of the transfer shaft 1101. The transfer gear 1102 is fixedly connected to the transfer shaft 1101. The transfer gear 1102 is engaged with the driving gear 904. The diameter of the transfer gear 1102 is larger than the diameter of the driving gear 904. The speed regulating gear 1103 is arranged on the surface of the transfer shaft 1101. The speed regulating gear 1103 is fixedly connected to the transfer shaft 1101.

[0042] In the embodiments of the present invention, see Figure 2 and Figure 3 The speed shift assembly 12 includes a speed shift shaft 1201, a fixed sleeve 1202 and a speed shift gear 1203. The fixed sleeve 1202 is arranged in the device housing 1, and the fixed sleeve 1202 is fixedly connected to the device housing 1. One end of the speed shift shaft 1201 is arranged in the fixed sleeve 1202. The speed shift shaft 1201 is rotatably connected to the fixed sleeve 1202. The speed shift gear 1203 is arranged on the surface of the speed shift shaft 1201. The speed shift gear 1203 is fixedly connected to the speed shift shaft 1201. The speed shift gear 1203 is meshed with the speed regulating gear 1103. The diameter of the speed shift gear 1203 is larger than the diameter of the speed regulating gear 1103. A matching groove 1204 is opened in the other end of the speed shift shaft 1201, and the matching shaft 810 is slidably connected to the matching groove 1204.

[0043] It should be noted that: by providing the transfer component 11 and the speed change component 12, the speed of the output end of the drive motor 902 can be adjusted, so that the extension and retraction of the electro-hydraulic push rod is smooth and stable, thereby improving the safety of use and the precise control of its extension and retraction amount.

[0044] In the embodiments of the present invention, see Figure 2 and Figure 6 The telescopic mechanism includes a first-level telescopic component 13 and a second-level telescopic component 14. The first-level telescopic component 13 is threadedly engaged with the telescopic screw 809. The first-level telescopic component 13 is slidingly connected to the telescopic box 2. The second-level telescopic component 14 is arranged in the first-level telescopic component 13. The second-level telescopic component 14 is slidingly connected to the first-level telescopic component 13.

[0045] Among them, the first-level telescopic assembly 13 includes a second fixed plate 1301, a connecting block 1302 and a sliding block 1303. The second fixed plate 1301 is arranged in the telescopic box body 2, the second fixed plate 1301 is fixedly connected to the telescopic box body 2, the connecting block 1302 is slidably connected to the second fixed plate 1301, a thread groove 1304 is provided in the end of the connecting block 1302 close to the telescopic screw 809, the telescopic screw 809 is threadedly connected to the thread groove 1304, the connecting block 1302 is fixedly connected to the sliding block 1303, the sliding block 1303 is slidably connected to the telescopic box body 2, a liquid outlet groove 1305 is provided in the end of the sliding block 1303 close to the connecting block 1302, the liquid outlet groove 1305 is connected to the two-way valve 1006 connected to the liquid outlet pipe 1003, and a sliding groove 1306 is provided in the end of the sliding block 1303 away from the connecting block 1302.

[0046] Among them, the secondary telescopic assembly 14 includes a slider 1401, a piston 1402 and an actuator rod 1403. The slider 1401 is arranged in the sliding groove 1306, and the slider 1401 can slide in the sliding groove 1306. The slider 1401 is slidingly connected to the telescopic box 2. A return liquid groove 1404 is provided in the slider 1401, and the return liquid groove 1404 is connected to the two-way valve 1006 connected to the return liquid pipe 1005. A sliding cavity 1405 is provided in the slider 1401, and the sliding cavity 1405 is connected to the liquid outlet groove 1305 and the return liquid groove 1404. The piston 1402 is arranged in the sliding cavity 1405, and the piston 1402 can slide in the sliding cavity 1405. The surface of the piston 1402 away from the liquid outlet groove 1305 is fixedly connected to the actuator rod 1403. The actuator rod 1403 is slidingly connected to the slider 1401, and the other end of the actuator rod 1403 is fixedly connected to the connecting member 4.

[0047] It should be noted that: when in use, the device is connected to the surface of the corresponding component through the connecting piece 4, and the control device 5 controls the liquid discharge cylinder 1002 to start, so that the liquid discharge cylinder 1002 discharges the hydraulic oil outlet pipe 1003 and the liquid outlet groove 1305 into the sliding groove 1306, thereby pushing the slider 1401 to slide in the sliding groove 1306, thereby causing the slider 1401 to partially move out of the telescopic box 2, thereby driving the actuator rod 1403 to extend, and then the hydraulic oil enters the sliding cavity 1405, thereby pushing the piston 1402 to slide in the sliding cavity 1405, thereby causing the actuator rod 1403 fixedly connected to the piston 1402 to slide. When the piston 1402 touches the bottom wall of the sliding cavity 1405, the return cylinder 1004 continuously pushes the hydraulic oil into the sliding cavity 1405, thereby causing the slider 1401 to slide toward the bottom wall of the sliding groove 1306, thereby retracting the actuator rod 1403 into the slider 1401, thereby completing the shortening of the device.

[0048] The working principle of the new electro-hydraulic push rod provided by the present invention is as follows:

[0049] When working, the device can be connected to the surface of the corresponding component through the connecting piece 4, and the control device 5 controls the liquid discharge cylinder 1002 to start, so that the liquid discharge cylinder 1002 discharges the hydraulic oil outlet pipe 1003 and the liquid outlet groove 1305 into the sliding groove 1306, thereby pushing the slider 1401 to slide in the sliding groove 1306, thereby causing the slider 1401 to partially move out of the telescopic box 2, thereby driving the actuator rod 1403 to extend, and then the hydraulic oil enters the sliding cavity 1405, thereby pushing the piston 1402 to slide in the sliding cavity 1405, thereby causing the actuator rod 1403 fixedly connected to the piston 1402 to slide out of the slider 1401, thereby realizing the secondary extension of the device; when it is needed When shortening is required, the hydraulic oil of the return cylinder 1004 is pushed into the sliding cavity 1405 through the return pipe 1005 and the return groove 1404, thereby causing the actuator rod 1403 to slide into the sliding cavity 1405, thereby shortening the actuator rod 1403. When the piston 1402 touches the bottom wall of the sliding cavity 1405, the return cylinder 1004 continuously pushes the hydraulic oil into the sliding cavity 1405, thereby causing the slider 1401 to slide toward the bottom wall of the sliding groove 1306, thereby retracting the actuator rod 1403 into the slider 1401, thereby completing the shortening of the device; when the device fails, the speed sensor 6 senses that the moving speed of the slider 1401 is abnormal and exceeds the preset speed threshold. At this time, the control device 5 controls the clutch motor 802 and the drive motor 902 to start, thereby causing the clutch screw 803 fixedly connected to the output end of the clutch motor 802 to rotate, and through the threaded transmission cooperation between the clutch screw 803 and the transmission block 804, the U-shaped plate 805 fixedly connected to the transmission block 804 drives the matching piece 806 to move, thereby causing the clutch gear 807 to engage with the clutch toothed disc 808; the output end of the drive motor 902 drives the drive shaft 903 fixedly connected thereto to rotate, thereby causing the drive gear 904 fixedly connected to the drive shaft 903 to rotate, and through the engagement between the drive gear 904 and the transfer gear 1102, the gear 807 arranged on the transfer shaft 110 1, the speed regulating gear 1103 on the surface rotates, and the engagement between the speed regulating gear 1103 and the speed changing gear 1203 drives the speed changing shaft 1201 to rotate, thereby causing the matching shaft 810 slidably connected to the speed changing shaft 1201 to rotate, thereby driving the matching piece 806 to rotate, and the engagement between the clutch gear 807 and the clutch toothed disc 808 causes the telescopic screw 809 to rotate, thereby causing the connecting block 1302 threadedly connected to the telescopic screw 809 to slide toward the side of the actuator rod 1403, thereby compensating for the backward retraction of the actuator rod 1403 when the electro-hydraulic push rod fails, avoiding accidental damage caused by failure, and improving the safety of the electro-hydraulic push rod when in use.

[0050] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0051] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A new type of electro-hydraulic push rod, comprising: A device box (1), a telescopic box (2) is provided on the surface of the device box (1), a drive box (3) is provided on the surface of the device box (1) on one side of the telescopic box (2), the device box (1) is connected to both the telescopic box (2) and the drive box (3), a connecting piece (4) is movably connected to the surface of the device box (1) on the opposite side of the telescopic box (2), and a control device (5) is provided on the surface of the drive box (3); It is characterized by further comprising: A driving mechanism for providing a power source for the extension and retraction of the push rod, the driving mechanism being arranged in the device housing (1) and the driving housing (3); A transmission mechanism for adjusting the transmission ratio of the driving mechanism is provided in the device housing (1), and the transmission mechanism is coupled to the driving mechanism; A telescopic mechanism for performing telescopic movement of the push rod is arranged in the telescopic box (2); A speed sensor (6) for sensing the movement speed of the telescopic mechanism is disposed in the telescopic box (2), and the speed sensor (6) is electrically connected to the control device (5). A sliding groove (7) is provided on the side wall of the telescopic box (2); A clutch assembly (8) for compensating for failure of a push rod is arranged in a telescopic box (2), and the clutch assembly (8) includes a C-shaped block (801), the C-shaped block (801) is arranged on the inner wall surface of the telescopic box (2), a clutch motor (802) is arranged on the surface of the C-shaped block (801), an output end of the clutch motor (802) is fixedly connected to a clutch screw (803), the clutch screw (803) is threadedly connected to a transmission block (804), the transmission block (804) is slidably connected to the C-shaped block (801), and the transmission block (804) is slidably connected to the telescopic box (2). ) is rotatably connected, the other end of the transmission block (804) is fixedly connected to a U-shaped plate (805), the U-shaped plate (805) is coupled to a matching piece (806), the matching piece (806) is provided with a clutch gear (807) at one end away from the device housing (1), the clutch gear (807) is engaged with a clutch toothed disc (808), the clutch toothed disc (808) is fixedly connected to a telescopic screw (809), the telescopic screw (809) is rotatably connected to the first fixed plate (15) in the telescopic housing (2), the other end of the telescopic screw (809) is threadedly connected to the telescopic mechanism, the The end of the mating member (806) close to the device housing (1) is fixedly connected to a mating shaft (810), and the mating shaft (810) is matched with the transmission mechanism, and the driving mechanism includes a motor assembly (9) and a hydraulic assembly (10), and the motor assembly (9) is arranged in the driving housing (3), and the motor assembly (9) is fixedly connected to the driving housing (3), and the hydraulic assembly (10) is arranged in the driving housing (3), and the hydraulic assembly (10) is fixedly connected to the driving housing (3), and the motor assembly (9) includes a motor plate (901), a driving motor (902), a driving shaft (903) and a driving mechanism. The invention relates to a driving gear (904), wherein the motor plate (901) is arranged in the driving housing (3), the motor plate (901) is fixedly connected to the driving housing (3), the driving motor (902) is arranged on the surface of the motor plate (901), the driving motor (902) is electrically connected to the control device (5), the output end of the driving motor (902) is fixedly connected to the driving shaft (903), the driving shaft (903) is rotationally connected to the device housing (1), the driving gear (904) is arranged on the surface of the driving shaft (903), and the driving gear (904) is fixedly connected to the driving shaft (903).

2. The novel electro-hydraulic push rod according to claim 1 is characterized in that: The hydraulic assembly (10) comprises a hydraulic plate (1001), a liquid outlet cylinder (1002), a liquid outlet pipe (1003), a liquid return cylinder (1004), a liquid return pipe (1005) and a two-way valve (1006); the hydraulic plate (1001) is arranged in a driving box (3); the hydraulic plate (1001) is fixedly connected to the driving box (3); the liquid outlet cylinder (1002) is arranged on the surface of the hydraulic plate (1001); the liquid outlet cylinder (1002) is electrically connected to the control device (5); the liquid outlet cylinder (1002) is electrically connected to the outlet The liquid pipe (1003) is connected, the other end of the liquid outlet pipe (1003) is connected to the two-way valve (1006), the two-way valve (1006) is connected to the telescopic mechanism, the liquid return cylinder (1004) is arranged on the surface of the hydraulic plate (1001), the liquid return cylinder (1004) is electrically connected to the control device (5), the liquid return cylinder (1004) is connected to the liquid return pipe (1005), the other end of the liquid return pipe (1005) is connected to the two-way valve (1006), and the two-way valve (1006) is electrically connected to the control device (5).

3. The novel electro-hydraulic push rod according to claim 1 is characterized in that: The transmission mechanism includes a transfer assembly (11) and a speed change assembly (12), wherein the transfer assembly (11) is arranged in a device housing (1), the transfer assembly (11) is rotationally connected to the device housing (1), the speed change assembly (12) is arranged in the device housing (1), the speed change assembly (12) is rotationally connected to the device housing (1), and the speed change assembly (12) is coupled to a mating shaft (810).

4. The novel electro-hydraulic push rod according to claim 3 is characterized in that: The transfer assembly (11) comprises a transfer shaft (1101), a transfer gear (1102) and a speed regulating gear (1103); the transfer shaft (1101) is rotatably connected to the device housing (1); the transfer gear (1102) is arranged on the surface of the transfer shaft (1101); the transfer gear (1102) is fixedly connected to the transfer shaft (1101); the transfer gear (1102) is meshed with the driving gear (904); the diameter of the transfer gear (1102) is larger than the diameter of the driving gear (904); the speed regulating gear (1103) is arranged on the surface of the transfer shaft (1101); and the speed regulating gear (1103) is fixedly connected to the transfer shaft (1101).

5. The novel electro-hydraulic push rod according to claim 3 is characterized in that: The speed change assembly (12) comprises a speed change shaft (1201), a fixed sleeve (1202) and a speed change gear (1203); the fixed sleeve (1202) is arranged in the device housing (1); the fixed sleeve (1202) is fixedly connected to the device housing (1); one end of the speed change shaft (1201) is arranged in the fixed sleeve (1202); the speed change shaft (1201) is rotatably connected to the fixed sleeve (1202); the speed change gear (1203) ) is arranged on the surface of the speed change shaft (1201), the speed change gear (1203) is fixedly connected to the speed change shaft (1201), the speed change gear (1203) is meshed with the speed regulating gear (1103), the diameter of the speed change gear (1203) is larger than the diameter of the speed regulating gear (1103), a matching groove (1204) is provided in the other end of the speed change shaft (1201), and the matching shaft (810) is slidably connected to the matching groove (1204).

6. The novel electro-hydraulic push rod according to claim 1 is characterized in that: The telescopic mechanism comprises a primary telescopic assembly (13) and a secondary telescopic assembly (14); the primary telescopic assembly (13) is threadedly engaged with a telescopic screw (809); the primary telescopic assembly (13) is slidably connected to a telescopic box (2); the secondary telescopic assembly (14) is arranged in the primary telescopic assembly (13); and the secondary telescopic assembly (14) is slidably connected to the primary telescopic assembly (13).

7. The novel electro-hydraulic push rod according to claim 6 is characterized in that: The first-stage telescopic assembly (13) comprises a second fixed plate (1301), a connecting block (1302) and a sliding block (1303), wherein the second fixed plate (1301) is arranged in the telescopic box (2), the second fixed plate (1301) is fixedly connected to the telescopic box (2), the connecting block (1302) is slidably connected to the second fixed plate (1301), a thread groove (1304) is provided in one end of the connecting block (1302) close to the telescopic screw (809), and the telescopic screw (809) is in contact with the screw. The groove (1304) is threadedly connected, the connecting block (1302) is fixedly connected to the sliding block (1303), the sliding block (1303) is slidably connected to the telescopic box (2), a liquid outlet groove (1305) is provided in one end of the sliding block (1303) close to the connecting block (1302), the liquid outlet groove (1305) is connected to a two-way valve (1006) connected to the liquid outlet pipe (1003), and a sliding groove (1306) is provided in one end of the sliding block (1303) away from the connecting block (1302).

8. The novel electro-hydraulic push rod according to claim 6 is characterized in that: The secondary telescopic assembly (14) comprises a slider (1401), a piston (1402) and an actuator rod (1403). The slider (1401) is arranged in a sliding groove (1306). The slider (1401) can slide in the sliding groove (1306). The slider (1401) is slidably connected to the telescopic box (2). A liquid return groove (1404) is provided in the slider (1401). The liquid return groove (1404) is connected to a two-way valve (1006) connected to a liquid return pipe (1005). A sliding cavity (1405) is provided in the slider (1401), and the sliding cavity (1405) is connected to the liquid outlet groove (1305) and the liquid return groove (1404). The piston (1402) is arranged in the sliding cavity (1405), and the piston (1402) can slide in the sliding cavity (1405). The surface of the piston (1402) away from the liquid outlet groove (1305) is fixedly connected to the actuator rod (1403), and the actuator rod (1403) is slidably connected to the slider (1401).

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