Dense-tooth gear type large-thrust electric push rod
By designing a close-toothed gear-type electric linear actuator, combining thrust bearings and deep groove ball bearings, and optimizing the motor structure, the problems of complex electric linear actuator structure and insufficient thrust are solved, achieving efficient and stable thrust output and miniaturization, making it suitable for a variety of applications.
Patent Information
- Application Number
- CN202423259856.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing electric linear actuators have complex structures, insufficient thrust, and are difficult to miniaturize and lighten. Furthermore, their response speed and stability are insufficient when starting and stopping frequently, making them unable to meet the needs of some high-precision applications.
It adopts a close-tooth gear structure, combines thrust bearings and deep groove ball bearings, uses close-tooth metal gears and buffer rubber, optimizes motor design to improve the stability and efficiency of thrust output, reduces noise, and achieves miniaturization and light weight through modular design.
It achieves efficient and stable thrust output in a small space, reduces noise, improves the stability and reliability of the equipment, is suitable for a variety of applications, and is easy to manufacture and maintain.
Smart Images
Figure CN223758099U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electric push rod technical field especially relates to a close gear type big thrust electric push rod. BACKGROUND
[0002] The existing electric push rod generally has the problems of complex structure, insufficient thrust and difficulty in miniaturization and lightening. Traditional electric push rod adopts built-in spring piece or screw rod structure to ensure stability, but these designs increase the complexity of the structure, leading to an increase in the number of parts. At the same time, due to the characteristics of the screw rod structure, the electric push rod faces difficulties in miniaturization and lightening. In addition, the thrust output of the traditional electric push rod is not stable enough to meet the needs of some high-precision applications. In some applications that require frequent starting and stopping, the response speed and stability of the traditional electric push rod cannot meet the requirements, limiting its application in more fields. Therefore, it is of great significance to develop a close gear type big thrust electric push rod with compact structure, strong thrust and high efficient and stable driving in a small space. SUMMARY
[0003] The utility model aims at providing a close gear type big thrust electric push rod which has compact structure, strong thrust and can realize high efficient and stable driving in a small space to overcome the problems in the prior art.
[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0005] The utility model provides a close gear type big thrust electric push rod, which comprises a cylinder, a motor, a gear set, a screw rod, a first set of bearings and a second set of bearings.
[0006] The inside of the cylinder is further provided with a first set of bearings, a second set of bearings, a screw rod and a screw rod connecting shaft. One end of the screw rod connecting shaft is connected with the screw rod. The first set of bearings and the second set of bearings are sleeved on the screw rod connecting shaft, and the first set of bearings and the second set of bearings are away from the screw rod.
[0007] The first set of bearings comprises a first deep groove ball bearing and a first thrust bearing. The second set of bearings comprises a second deep groove ball bearing and a second thrust bearing. The first thrust bearing is arranged between the first deep groove ball bearing and the second deep groove ball bearing. The second thrust bearing is arranged at the bottom side of the second deep groove ball bearing.
[0008] The top of the first deep groove ball bearing is provided with a nut pair. The bottom side of the second thrust bearing is provided with a piston head. The output of the motor is provided with a motor shaft gear. The motor shaft gear drives the screw rod connecting shaft to rotate through a plurality of gear sets. The motor shaft gear is arranged on the left side of the gear set. The gear set is arranged at one end of the screw rod connecting shaft.
[0009] The motor is installed beside the cylinder, the bottom of the cylinder is fixedly connected with a bearing seat, and the inside of the cylinder is sleeved with a telescopic rod.
[0010] Preferably, the inside of the top of the cylinder is provided with an oil seal retainer.
[0011] Preferably, the top of the telescopic rod is fixedly connected with a non-magnetic head.
[0012] Preferably, the screw rod is provided with trapezoidal notch threads, and the screw rod can generate self-locking force through cooperation of the trapezoidal notch threads and the nut pair, thereby improving safety during operation.
[0013] Preferably, the bottom side of the gear set is provided with a push piece, and the bottom side of the push piece is provided with a travel switch.
[0014] Preferably, the telescopic rod is made of steel.
[0015] Preferably, the nut pair is made of copper.
[0016] Preferably, the gear set is made of a dense tooth metal gear, and the dense tooth gear can bear a larger torque because the number of teeth is larger and each tooth bears a smaller load.
[0017] Preferably, the periphery of the screw rod is sleeved with a buffer rubber, and the buffer rubber is made of a high-elasticity material and is arranged between the piston head and the screw rod connecting shaft for energy absorption.
[0018] Beneficial effects:
[0019] Compared with the prior art, the dense tooth gear type large thrust electric push rod provided by the utility model has the advantages that the screw rod connecting shaft is driven by the motor gear, so that the thrust output is more stable and efficient. Meanwhile, the cooperation of the thrust bearing and the deep groove ball bearing improves the carrying capacity and service life of the electric push rod. The gear set is made of a dense tooth metal gear, and the dense tooth gear can bear a larger torque because the number of teeth is larger and each tooth bears a smaller load. In addition, the gear pitch of the dense tooth gear is small, the meshing frequency is high, the impact force is small during transmission, the operation is stable, and the noise is low. The buffer rubber further enhances the stability and safety of the system, effectively absorbs impact energy, and reduces noise. In addition, the structure of the electric push rod is compact, easy to realize miniaturization and light weight, and suitable for various application occasions. Through modular design, users can select electric push rods of different specifications according to different needs, thereby improving the versatility and flexibility of the product. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical schemes in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description only constitute a part of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.
[0021] Fig. 1 The accompanying drawings are schematic diagrams of the overall structure of the dense-tooth gear type large-thrust electric push rod of the present application.
[0022] Fig. 2 The accompanying drawings are front views of the dense-tooth gear type large-thrust electric push rod of the present application.
[0023] Fig. 3 The accompanying drawings are schematic diagrams of the internal structure of the dense-tooth gear type large-thrust electric push rod of the present application.
[0024] In the drawings: 1-motor, 2-magnetic head, 3-cylinder, 4-first deep groove ball bearing, 5-second deep groove ball bearing, 8-screw rod, 9-nut pair, 11-telescopic rod, 12-piston head, 13-seal ring, 14-first thrust bearing, 15-second thrust bearing, 19-gear set, 21-motor shaft gear, 28-screw rod connecting shaft, 29-travel switch, 30-paddle, 31-bearing seat. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments only constitute a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0026] Embodiment 1
[0027] Please refer to the accompanying drawings Figs. 1-3 The dense-tooth gear type large-thrust electric push rod provided by the present application comprises a cylinder 3, a motor 1, a gear set 19, a screw rod 8, a first set of bearings and a second set of bearings.
[0028] The cylinder 3 is internally sleeved with a telescopic rod 11. The cylinder 3 is also internally provided with a sliding groove.
[0029] The output of the motor 1 is provided with a motor shaft gear 21, the motor shaft gear 21 drives the screw rod connecting shaft 28 to rotate through a plurality of gear sets 19, the motor shaft gear 21 is arranged on the left side of the gear set 19, and the gear set 19 is arranged at one end of the screw rod connecting shaft 28.
[0030] The gear set 19 adopts a dense metal gear. The dense gear has more teeth, and each tooth bears a smaller load, so it can bear a larger torque. The gear pitch of the dense gear is small, and the meshing frequency is high, so the impact force is small during transmission, the operation is stable, and the noise is low.
[0031] The gear set 19 is sleeved at the bottom of the screw rod connecting shaft 28 and connected with the motor shaft gear 21. The motor 1 is connected to drive the screw rod 8 through a plurality of metal gear sets 19. The design of the gear connection enables the motor 1 to directly drive the screw rod 8, thereby improving the stability of thrust output, the extension accuracy, and the efficiency. The metal gear set 19 structure can effectively transmit torque and ensure that slipping or loosening does not occur under high thrust output.
[0032] The extension rod 11 is made of steel material, and the nut pair 9 is made of copper material. The steel extension rod 11 and the copper nut pair 9 also make the push rod have high strength.
[0033] The motor 1 is installed beside the cylinder barrel 3, which can greatly shorten the installation distance under the same lead, and the motor 1 is used to drive the motor shaft gear 21 to rotate and drive the screw rod 8 to rotate. The motor 1 selects a high-efficiency and low-energy consumption type, which can provide sufficient driving force while reducing energy consumption. The motor 1 is provided with an overheat protection device, which can automatically protect in the case of long-time work or overload, thereby prolonging the service life of the motor.
[0034] The cylinder barrel 3 is provided with an oil seal retainer 13 on the top inner side.
[0035] The cylinder barrel 3 is made of high-strength material, and the top of the cylinder barrel 3 is provided with a high-quality oil seal retainer 13, which can bear a large axial load while ensuring the stability of the structure.
[0036] The top of the extension rod 11 is fixedly connected with a non-magnetic head 2, and the bottom of the cylinder barrel 3 is fixedly connected with a bearing seat 31. The non-magnetic head 2 and the bearing seat 31 are connected with the equipment through high-strength bolts, thereby ensuring the stability of the cylinder during the working process.
[0037] The inside of the cylinder barrel 3 is also provided with a first group of bearings, a second group of bearings, a screw rod 8, and a screw rod connecting shaft 28. One end of the screw rod connecting shaft 28 is connected with the screw rod 8, the first group of bearings and the second group of bearings are sleeved on the screw rod connecting shaft 28, and the first group of bearings and the second group of bearings are away from the screw rod 8.
[0038] The first group of bearings includes a first deep groove ball bearing 4 and a first thrust bearing 14, and the second group of bearings includes a second deep groove ball bearing 5 and a second thrust bearing 15. The first thrust bearing 14 is arranged between the first deep groove ball bearing 4 and the second deep groove ball bearing 5, the second thrust bearing 15 is arranged on the bottom side of the second deep groove ball bearing 5, the nut pair 9 is arranged on the top of the first deep groove ball bearing 4, and the bottom side of the second thrust bearing 15 is provided with a piston head 12.
[0039] Due to the large bearing capacity, the bottom of the lead screw 8 is provided with two groups of bearings to improve the stability and coaxiality. The first group of bearings and the second group of bearings are fixed in the bearing seat, are sleeved on the outer periphery of the lead screw connecting shaft 28 and are in close contact with the convex edge, and are used for providing the axial load.
[0040] The thrust bearing is selected from a high bearing capacity type, can bear a large axial force, and ensures the stability of the system. The high-quality lubricating material is adopted, can reduce the friction and heat accumulation during high-speed operation, and improves the service life of the bearing. The selection of the deep groove ball bearing improves the rotation accuracy and stability of the lead screw 8. The deep groove ball bearing has good sealing performance, can effectively prevent dust and impurities from entering the bearing, and ensures the normal work of the bearing in a harsh environment.
[0041] The trapezoidal notch thread is arranged on the lead screw 8, the lead screw 8 can generate self-locking force through the trapezoidal notch thread and the nut pair 9, and the safety during operation is improved.
[0042] The bottom side of the gear set 19 is provided with a push piece 30, the bottom side of the push piece 30 is provided with a travel switch 29, the push piece 30 of the travel gear is driven by the main shaft gear to calculate the extension and retraction stroke of the telescopic rod, the gear travel switch 29 has accurate travel calculation function, and the position of the telescopic rod can be monitored in real time to output data.
[0043] The buffer rubber is arranged on the outer periphery of the lead screw 8, and the buffer rubber is arranged between the piston head 12 and the lead screw connecting shaft 28, and is used for buffering and absorbing energy.
[0044] The buffer rubber is made of high-elasticity material, can effectively absorb impact energy, reduce noise, and improve the stability and safety of the system. The design of the buffer rubber is accurately calculated, can provide appropriate buffering effect under various working conditions, and avoids damage to other components due to impact.
[0045] Working principle and use method: after the motor is started, the lead screw 8 is connected with the dense metal gear set 19 to drive the lead screw 8 to rotate, the lead screw 8 drives the telescopic rod 11 to do linear reciprocating motion through the nut pair 9, and large thrust output is realized. During the working process, the buffer rubber plays a role in buffering and absorbing energy, the first thrust bearing 14, the second thrust bearing 15, the first deep groove ball bearing 4 and the second deep groove ball bearing 5 ensure the stable operation of the system. The stability and reliability of the working process are significantly improved. Through accurate control of the rotating speed and torque output of the motor, the precise control of the electric push rod can be realized, and the demand of high-precision application can be met.
[0046] The utility model provides a kind of dense gear wheel type big thrust electric push rod, its compact structure, thrust is powerful, can realize efficient stable drive in smaller space, solve the technical problem in prior art.Meanwhile, the electric push rod also has the characteristics of easy to manufacture and maintain, can be widely applied in various industrial and civilian fields.Through optimization design, the electric push rod can stably operate in various complex working environments, improve the overall performance and reliability of equipment.
[0047] The above description of the disclosed embodiments enables one skilled in the art to make or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will accord with the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A high thrust electric push rod of the close tooth gear type, characterized in that, It comprises a cylinder (3), a motor (1), a gear set (19), a lead screw (8), a first set of bearings and a second set of bearings; The inside of the cylinder (3) is also provided with a first set of bearings, a second set of bearings, a lead screw (8) and a lead screw connecting shaft (28), one end of the lead screw connecting shaft (28) is connected with the lead screw (8), the first set of bearings and the second set of bearings are sleeved on the lead screw connecting shaft (28), and the first set of bearings and the second set of bearings are away from the lead screw (8); The first set of bearings comprises a first deep groove ball bearing (4) and a first thrust bearing (14), the second set of bearings comprises a second deep groove ball bearing (5) and a second thrust bearing (15), the first thrust bearing (14) is arranged between the first deep groove ball bearing (4) and the second deep groove ball bearing (5), and the second thrust bearing (15) is arranged at the bottom side of the second deep groove ball bearing (5); The top of the first deep groove ball bearing (4) is provided with a nut pair (9), the bottom side of the second thrust bearing (15) is provided with a piston head (12), the output of the motor (1) is provided with a motor shaft gear (21), the motor shaft gear (21) drives the lead screw connecting shaft (28) to rotate through a plurality of gear sets (19), the motor shaft gear (21) is arranged on the left side of the gear set (19), and the gear set (19) is arranged at one end of the lead screw connecting shaft (28). The motor (1) is mounted beside the cylinder (3), the bottom of the cylinder (3) is fixedly connected with a bearing seat (31), and the inside of the cylinder (3) is sleeved with a telescopic rod (11).
2. The close tooth gear type large thrust electric push rod according to claim 1, characterized in that, The inside of the top of the cylinder (3) is provided with an oil seal retainer (13).
3. The close tooth gear type large thrust electric push rod according to claim 1, characterized in that, The top of the telescopic rod (11) is fixedly connected with a non-magnetic head (2).
4. The close tooth gear type large thrust electric push rod according to claim 1, characterized in that, The lead screw (8) is provided with trapezoidal notch threads, and the lead screw (8) can generate self-locking force by cooperating with the nut pair (9) through the trapezoidal notch threads.
5. The close tooth gear type large thrust electric push rod according to claim 4, characterized in that, The bottom side of the gear set (19) is provided with a push piece (30), and the bottom side of the push piece (30) is provided with a travel switch (29).
6. The close tooth gear type high thrust electric push rod according to claim 1, characterized in that, The telescopic rod (11) is made of steel material.
7. The close tooth gear type large thrust electric push rod according to claim 6, characterized in that, The nut pair (9) is made of copper material.
8. The high-torque electric tappet according to any one of claims 1 to 7, characterized in that The gear set (19) is made of dense metal gear.
9. The close tooth gear type large thrust electric push rod according to claim 8, characterized in that, The lead screw (8) is provided with buffer rubber around, buffer rubber is arranged between the piston head (12) and the lead screw connecting shaft (28), the buffer rubber is made of high elasticity material and is used for energy absorption.