Module assembly type electric push rod

Abstract

The utility model provides a module assembly type electric push rod, which comprises a gear box group module and an outer pipe group module, the outer pipe group module comprises an outer pipe, an inner pipe and a ball screw, the ball screw is in driving connection with the inner pipe, the ball screw is used for driving the inner pipe to move along the outer pipe in the vertical direction, the bottom surface of the lower end of the outer pipe is fixedly connected with a fixed connecting seat, and the fixed connecting seat is fixedly connected with the gear box group module. The bottom face of the fixed connecting base is detachably connected with the gearbox set module, and the lower end of the ball screw penetrates through the fixed connecting base and is in driving connection with the gearbox set module. According to the utility model, the gearbox group module and the outer tube group module are in modular design, the gearbox group module and the outer tube group module are detachably connected through the fixed connecting seat, so that the gearbox group module and the outer tube group module can be conveniently and quickly assembled and tested, and when any module breaks down, part of components can be independently disassembled for maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of electric push rod structures, in particular to a module-assembled electric push rod. Background Art

[0002] Solar thermal power generation: using large-scale arrays of parabolic or dish-shaped mirrors to collect solar thermal energy, providing steam through heat exchange devices, and combining with the technology of traditional steam turbine generators to achieve the purpose of power generation. The use of solar thermal power generation technology avoids the expensive silicon crystal photoelectric conversion process and can greatly reduce the cost of solar power generation. Moreover, this form of solar energy utilization has an advantage that other forms of solar energy conversion cannot match, that is, the water heated by solar energy can be stored in huge containers, and can still drive steam turbines to generate electricity several hours after the sun sets.

[0003] Solar thermal electric actuator is a control actuator that controls tens of thousands of mirrors in the tower type solar thermal power generation to focus light on the solar thermal tower. It has the characteristics of high precision, long life and high corrosion resistance.

[0004] The electric push rod is a new type of linear actuator mainly composed of a motor push rod and a control device. It can be considered as an extension of the rotary motor in terms of structure. After the motor is reduced by gears or worm gears, it drives a pair of screw nuts. The rotary motion of the motor is converted into linear motion, and the push rod action is completed by the forward and reverse rotation of the motor. For example, through various levers, rockers or connecting rods, complex actions such as rotation and shaking can be completed. By changing the length of the lever arm, the stroke can be increased or decreased.

[0005] However, the existing electric push rod gear box housing and the moving outer tube assembly are fixedly connected as one body, which makes it inconvenient to disassemble and maintain.

[0006] A new type of detachable modular electric linear actuator is now needed to solve the above-mentioned problems. Utility Model Content

[0007] The utility model provides a modular assembled electric push rod, which solves the problem of inconvenience in disassembly, maintenance and use of the existing electric push rod by technically transforming the existing electric push rod.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A modular assembled electric push rod comprises a gearbox group module and an outer tube group module, the outer tube group module comprises an outer tube, an inner tube and a ball screw, the ball screw is drivingly connected to the inner tube, the ball screw is used to drive the inner tube to move along the outer tube in a vertical direction, the bottom surface of the lower end of the outer tube is fixedly connected to a fixed connecting seat, the bottom surface of the fixed connecting seat is detachably connected to the gearbox group module, and the lower end of the ball screw passes through the fixed connecting seat and is drivingly connected to the gearbox group module.

[0010] Preferably, the gearbox group module includes a gearbox housing, a brushless motor, a planetary gear set and a worm gear assembly. The brushless motor, the planetary gear set and the worm gear assembly are installed in the gearbox housing. The output end of the brushless motor is connected to the planetary gear set, the output end of the planetary gear set is connected to the worm gear assembly, and the output end of the worm gear assembly is connected to a ball screw drive.

[0011] Preferably, the gear box housing is provided with a fixed mounting seat directly above the worm gear assembly, and the fixed connecting seat is provided with a first fixed screw hole and a second fixed screw hole, the first fixed screw hole is provided at the inner side of the fixed mounting seat, and the fixing screw passes through the first fixed screw hole provided on the bottom surface of the fixed connecting seat and is fixedly connected to the outer tube, and the second fixed screw hole is provided at the outer peripheral side of the fixed mounting seat, and the fixing screw passes through the second fixed screw hole from top to bottom and is connected to the fixed mounting seat.

[0012] Preferably, a boss structure is provided on the upper surface of the fixed mounting seat protruding upward, and a positioning groove is provided on the bottom surface of the fixed connecting seat. The boss structure is embedded in the positioning groove, and the ball screw passes through the positioning groove and is connected to the worm gear assembly, and a positioning bearing is provided between the inner wall of the positioning groove and the ball screw, and the ball screw is rotatably connected to the fixed mounting seat through the positioning bearing.

[0013] Preferably, the worm gear assembly includes a worm wheel and a worm, the worm is connected to the output end of the planetary gear set, the worm is drivingly connected to the worm wheel, a connecting seat mounting groove is provided on the worm wheel, a screw connecting seat is installed in the connecting seat mounting groove, the worm wheel and the screw connecting seat are fixedly connected, a screw limiting through groove is provided in the middle of the screw connecting seat, the screw limiting through groove is arranged to abut against the flat surface of the lower end of the ball screw, limiting bearings are provided on the outer side surfaces of the upper and lower ends of the screw connecting seat, and the screw connecting seat is rotatably installed in the gear box housing through the limiting bearings.

[0014] Preferably, the worm gear is arranged to rotate coaxially with the brushless motor.

[0015] The beneficial effects of the utility model are:

[0016] The utility model comprises a gearbox module and an outer tube module of modular design. The gearbox module and the outer tube module are detachably connected via a fixed connection seat, and can be conveniently and quickly assembled and tested. When any module fails, some components can be individually disassembled for repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the disassembly of the gearbox module and the outer tube module of the utility model;

[0019] Figure 3 This is a schematic diagram of the bottom surface structure of the fixed connection seat of the utility model;

[0020] Figure 4 This is a schematic diagram of the split structure of the outer tube group module of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the gearbox housing connection of the utility model;

[0022] Figure 6 This is a schematic diagram of the drive connection structure of the gearbox module of the utility model;

[0023] Explanation of the accompanying figures: gearbox group module 1, gearbox housing 11, fixed mounting seat 111, boss structure 112, brushless motor 12, planetary gear set 13, worm gear assembly 14, worm wheel 141, worm 142, connecting seat mounting slot 143, outer tube group module 2, outer tube 21, inner tube 22, ball screw 23, fixed connecting seat 3, first fixing screw hole 31, second fixing screw hole 32, positioning groove 33, positioning bearing 34, screw connecting seat 4, screw limit slot 41, limit bearing 42. DETAILED DESCRIPTION

[0024] The specific contents of the utility model are described in detail below with reference to the accompanying drawings and embodiments.

[0025] See also Figure 1-6 As shown, the utility model provides a modular assembled electric push rod, including a gearbox group module 1 and an outer tube group module 2, the outer tube group module 2 includes an outer tube 21, an inner tube 22 and a ball screw 23, the ball screw 23 is drivingly connected to the inner tube 22, the ball screw 23 is used to drive the inner tube 22 to move along the outer tube 21 in the vertical direction, the bottom surface of the lower end of the outer tube 21 is fixedly connected to the fixed connection seat 3, the bottom surface of the fixed connection seat 3 is detachably connected to the gearbox group module 1, and the lower end of the ball screw 23 passes through the fixed connection seat 3 and is drivingly connected to the gearbox group module 1. A limit switch is installed on the outer tube group module to prevent the inner tube from excessive movement causing damage or safety accidents.

[0026] Furthermore, the gearbox group module 1 includes a gearbox housing 11, a brushless motor 12, a planetary gear set 13 and a worm gear assembly 14. The brushless motor 12, the planetary gear set 13 and the worm gear assembly 14 are installed in the gearbox housing 11. The output end of the brushless motor 12 is connected to the planetary gear set 13, the output end of the planetary gear set 13 is connected to the worm gear assembly 14, and the output end of the worm gear assembly 14 is connected to the ball screw 23 for driving.

[0027] Furthermore, a fixed mounting seat 111 is provided at a position directly above the gear box housing 11 relative to the worm gear assembly 14, and a first fixed screw hole 31 and a second fixed screw hole 32 are provided at the fixed connecting seat 3. The first fixed screw hole 31 is provided at an inner side of the fixed mounting seat 111, and a fixing screw passes through the first fixed screw hole 31 provided on the bottom surface of the fixed connecting seat 3 and is fixedly connected to the outer tube 21. The second fixed screw hole 32 is provided at an outer peripheral side of the fixed mounting seat 111, and the fixing screw passes through the second fixed screw hole 32 from top to bottom and is connected to the fixed mounting seat 111.

[0028] Sealing pads or sealing rings can be added at the interfaces to prevent external impurities such as dust and moisture from entering the interior of each module and affecting operating efficiency and service life.

[0029] Furthermore, a boss structure 112 is provided on the upper surface of the fixed mounting seat 111 and protrudes upward, and a positioning groove 33 is provided on the bottom surface of the fixed connecting seat 3, the boss structure 112 is embedded in the positioning groove 33, and the ball screw 23 passes through the positioning groove 33 and is connected to the worm gear assembly 14, and a positioning bearing 34 is provided between the inner wall of the positioning groove 33 and the ball screw 23, and the ball screw 23 is rotatably connected to the fixed mounting seat 111 through the positioning bearing 34.

[0030] Furthermore, in order to achieve the installation transmission effect of the worm gear assembly and the ball screw, the worm gear assembly 14 includes a worm wheel 141 and a worm 142, the worm 142 is connected to the output end of the planetary gear set 13, the worm 142 is drivingly connected to the worm wheel 141, a connecting seat mounting groove 143 is provided on the worm wheel 141, a screw connecting seat 4 is installed in the connecting seat mounting groove 143, the worm wheel 141 is fixedly connected to the screw connecting seat 4, a screw limiting groove 41 is provided in the middle of the screw connecting seat 4, the screw limiting groove 41 is abutted against the flat surface of the lower end of the ball screw 23, and limiting bearings 42 are provided on the outer side surfaces of the upper and lower ends of the screw connecting seat 4, and the screw connecting seat 4 is rotatably installed in the gear box housing 11 through the limiting bearings 42.

[0031] During installation, the ball screw 23 is directly inserted into the screw connecting seat 4 so that the flat surface at the lower end of the ball screw 23 fits against the inner wall of the screw limiting groove 41, so that when the screw connecting seat 4 rotates, the ball screw 23 rotates together with it, and supporting structures such as limiting bearings and locating bearings are arranged on the outer peripheral sides of the ball screw 23 and the screw connecting seat 4, so that the ball screw 23 will not deflect laterally and the operation stability is stronger.

[0032] Furthermore, the worm gear 141 is coaxially rotatable with the brushless motor 12 .

[0033] In one embodiment, the present application uses a dynamic load of 30KN, a static load of 50KN, a heliostat solar thermal intelligent high-precision tracking push rod ball screw, and a worm gear version electric push rod.

[0034] The present embodiment includes a gearbox group module 1 and an outer tube group module 2 of modular design. The gearbox group module 1 and the outer tube group module 2 are detachably connected via a fixed connecting seat 3, and can be conveniently and quickly assembled and tested. When any module fails, some components can be individually disassembled for repair.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

[0036] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A modular assembled electric linear actuator, characterized in that: It includes a gearbox group module and an outer tube group module. The outer tube group module includes an outer tube, an inner tube and a ball screw. The ball screw is drivingly connected to the inner tube. The ball screw is used to drive the inner tube to move along the outer tube in a vertical direction. The bottom surface of the lower end of the outer tube is fixedly connected to the fixed connecting seat. The bottom surface of the fixed connecting seat is detachably connected to the gearbox group module. The lower end of the ball screw passes through the fixed connecting seat and is drivingly connected to the gearbox group module.

2. The modular assembled electric linear actuator according to claim 1, characterized in that: The gearbox group module includes a gearbox housing, a brushless motor, a planetary gear set and a worm gear assembly. The brushless motor, the planetary gear set and the worm gear assembly are installed in the gearbox housing. The output end of the brushless motor is connected to the planetary gear set, the output end of the planetary gear set is connected to the worm gear assembly, and the output end of the worm gear assembly is connected to a ball screw drive.

3. The modular assembled electric linear actuator according to claim 2, characterized in that: The gear box housing is provided with a fixed mounting seat directly above the worm gear assembly, and the fixed connecting seat is provided with a first fixed screw hole and a second fixed screw hole. The first fixed screw hole is provided at the inner side of the fixed mounting seat, and the fixing screw passes through the first fixed screw hole provided on the bottom surface of the fixed connecting seat and is fixedly connected to the outer tube. The second fixed screw hole is provided at the outer peripheral side of the fixed mounting seat, and the fixing screw passes through the second fixed screw hole from top to bottom and is connected to the fixed mounting seat.

4. The modular assembled electric linear actuator according to claim 3, characterized in that: The upper surface of the fixed mounting seat is provided with a boss structure protruding upward, and the bottom surface of the fixed connection seat is provided with a positioning groove, the boss structure is embedded in the positioning groove, and the ball screw passes through the positioning groove and is connected to the worm gear assembly, and a positioning bearing is provided between the inner wall of the positioning groove and the ball screw, and the ball screw is rotatably connected to the fixed mounting seat through the positioning bearing.

5. The modular assembled electric linear actuator according to claim 4, characterized in that: The worm gear assembly includes a worm wheel and a worm, the worm is connected to the output end of the planetary gear set, the worm is drivingly connected to the worm wheel, a connecting seat mounting groove is provided on the worm wheel, a screw connecting seat is installed in the connecting seat mounting groove, the worm wheel and the screw connecting seat are fixedly connected, a screw limiting through groove is provided in the middle of the screw connecting seat, the screw limiting through groove is arranged to abut against the flat surface of the lower end of the ball screw, limiting bearings are provided on the outer side surfaces of the upper and lower ends of the screw connecting seat, and the screw connecting seat is rotatably installed in the gear box housing through the limiting bearings.

6. The modular assembled electric linear actuator according to claim 5, characterized in that: The worm gear is coaxially rotatable with the brushless motor.

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