Linear reciprocating push rod structure

Abstract

This utility model discloses a linear reciprocating push rod structure, belonging to the field of electric drive technology. Its key technical features include a fixed base plate and a motor fixed to one end of the base plate. A stroke plate is connected to the output end of the motor. A guide member is fixedly connected to the top of the fixed base plate, and a push rod is inserted into the middle of the guide member. A threaded rod is provided on the top of the stroke plate, with connecting rods symmetrically sleeved at both ends of the threaded rod. A rotating block is fixedly connected to the middle of the threaded rod, and an adjustment connecting mechanism is inserted into one end of the stroke plate. This utility model, through its adjustment connecting mechanism, allows for adjustment of the reciprocating travel distance of the push rod as needed, thus adapting to different reciprocating strokes in different devices. It offers high adjustment precision and strong stability after adjustment, meeting the precision transmission requirements in various scenarios. Furthermore, it facilitates adjustment of the reciprocating stroke position as needed without replacing the stroke plate and push rod components, saving costs and improving adaptation efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of electric drive technology, specifically relating to a linear reciprocating push rod structure. Background Technology

[0002] Linear reciprocating push rod mechanism is the core transmission component of industrial automation equipment. Its motion accuracy, response speed and stability directly affect the overall performance of the equipment. Some linear reciprocating motion structures are generally realized by linear push rod composed of a motor, reducer, push rod and control system. The working principle of linear push rod is to convert the rotational motion of the motor into the electric drive of the linear reciprocating motion of the push rod.

[0003] A search revealed Chinese patent CN211266661U, which discloses a linear reciprocating push rod structure, including a fixed base plate, a motor, a stroke adjustment component, a connecting rod, a push rod, and a guide component. This linear reciprocating push rod structure is simple in structure, with multi-stage adjustable stroke, and can achieve linear reciprocating motion without switching the motor's forward and reverse directions. However, it still has the following drawbacks: some push rod structures require replacing the push rod with accessories of the required size after installation to adjust the reciprocating position, which is inefficient and requires push rod accessories of various sizes, increasing the cost of use. In addition, the stroke plate is mostly a fixed structure, resulting in a fixed reciprocating distance at one end of the push rod. Different devices require different reciprocating strokes, and the reciprocating distance cannot be adjusted according to actual needs, failing to meet diverse scenario requirements. Therefore, a linear reciprocating push rod structure is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a linear reciprocating push rod structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a linear reciprocating push rod structure, including a fixed base plate and a motor fixed to one end of the fixed base plate, the output end of the motor is connected to a stroke plate, a guide member is fixedly connected to the top of the fixed base plate, and a push rod is inserted into the middle of the guide member;

[0006] The top of the travel plate is provided with a threaded rod, and the two ends of the threaded rod are symmetrically fitted with connecting rods. A rotating block is fixedly connected to the middle of the threaded rod.

[0007] An adjustment connecting mechanism is inserted into one end of the travel plate. The adjustment connecting mechanism includes a fixed post inserted into one end of the travel plate. An adjustment through hole is opened on the surface of the travel plate. A limit groove is opened at the bottom of the inner cavity of the adjustment through hole. A locking tooth groove is opened at the top of the inner cavity of the limit groove. A limit plate is provided in the middle of the limit groove. A locking rack is fixedly connected to the top of the limit plate. A fastening nut is sleeved on the top of the fixed post. A locking sleeve is sleeved on the outside of the fastening nut. A toothed column is fixedly connected to the inner cavity of the locking sleeve. A toothed column groove is opened at the top of the fixed post.

[0008] Preferably, the travel plate and the motor are fixed on both sides of the fixed base plate, the fixed base plate is configured with an "L" shape, and multiple mounting holes are provided on one side of the fixed base plate.

[0009] Preferably, a connecting ring is fixedly connected to the end of the connecting rod away from the threaded rod, and the two connecting rings are rotatably connected to one end of the push rod and one end of the fixed column, respectively.

[0010] Preferably, the threaded rod is divided into two parts by a rotating block, and the threads of the two parts are symmetrically arranged. The two parts of the threaded rod are respectively threaded to the inner cavities of two connecting rods.

[0011] Preferably, the limiting plate is adapted to the limiting groove, and the bottom wall of the limiting plate and the bottom wall of the travel plate are on the same horizontal plane.

[0012] Preferably, the locking rack is adapted to the locking tooth groove, and the two ends of the locking rack are engaged with the corresponding locking tooth groove portions.

[0013] Preferably, the top end of the fixing post is provided with a threaded groove, and the top end of the fixing post is threadedly connected to a fastening nut, which is located on the top of the connecting ring.

[0014] Preferably, the inner cavity cross-sectional shape of the locking sleeve is adapted to the outer surface cross-sectional shape of the fastening nut, the toothed post is adapted to the toothed post groove, and the toothed post is inserted into the toothed post groove and meshes with the inner cavity of the toothed post groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model, through its adjustable connecting mechanism, allows for adjustment of the reciprocating movement distance of the push rod as needed, thereby adapting to different reciprocating strokes of different equipment. It also features high adjustment precision and strong stability after adjustment, meeting the precision transmission requirements in various scenarios.

[0017] 2. This utility model also adjusts the distance between the two connecting rods by rotating the rotating block. After the push rod structure is installed, the reciprocating stroke position can be adjusted as needed without replacing the stroke plate and push rod accessories, saving costs and improving adaptation efficiency.

[0018] In summary, through the interaction of the above-mentioned multiple functions, it can be adapted to different reciprocating strokes of different equipment, with high adjustment accuracy. At the same time, it is convenient to adjust the reciprocating stroke position as needed without replacing the stroke plate and push rod accessories, saving costs and improving adaptation efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a partial disassembled structural diagram of the present invention;

[0021] Figure 3 This is a schematic diagram showing the disassembled structure of the travel plate, fixing column, and locking sleeve of this utility model.

[0022] In the diagram: 1. Fixed base plate; 2. Motor; 3. Stroke plate; 4. Adjustment through hole; 5. Limiting groove; 6. Locking tooth groove; 7. Limiting plate; 8. Fixed column; 9. Locking rack; 10. Tooth column groove; 11. Connecting ring; 12. Fastening nut; 13. Locking sleeve; 14. Tooth column; 15. Connecting rod; 16. Threaded rod; 17. Rotating block; 18. Push rod; 19. Guide component. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-3 The present invention provides a linear reciprocating push rod structure, including a fixed base plate 1 and a motor 2 fixed to one end of the fixed base plate 1. The output end of the motor 2 is connected to a stroke plate 3. A guide member 19 is fixedly connected to the top of the fixed base plate 1, and a push rod 18 is inserted into the middle of the guide member 19.

[0025] The travel plate 3 and the motor 2 are respectively fixed on both sides of the fixed base plate 1. The fixed base plate 1 is configured with an "L" shape, and multiple mounting holes are provided on one side of the fixed base plate 1.

[0026] In this embodiment, the starter motor 2 controls the rotation of the stroke plate 3, which can sequentially control the push rod 18 to move back and forth. The guide member 19 limits and guides the movement of the push rod 18. Multiple mounting holes on one side of the fixed base plate 1 facilitate installation and fixation.

[0027] The top of the travel plate 3 is provided with a threaded rod 16, and the two ends of the threaded rod 16 are symmetrically fitted with connecting rods 15. The middle part of the threaded rod 16 is fixedly connected with a rotating block 17.

[0028] A connecting ring 11 is fixedly connected to the end of the connecting rod 15 away from the threaded rod 16. The two connecting rings 11 are rotatably connected to one end of the push rod 18 and one end of the fixed column 8, respectively.

[0029] In this embodiment, by rotating the rotating block 17 to control the rotation of the threaded rod 16, the distance between the two connecting rods 15 can be adjusted, thereby adjusting the stroke position of the push rod 18. Through the cooperation of the threaded rod 16 and the connecting rod 15, the stroke plate 3 can be connected to the push rod 18 to play a transmission role.

[0030] An adjustment connecting mechanism is inserted into one end of the travel plate 3. The adjustment connecting mechanism includes a fixed post 8 inserted into one end of the travel plate 3. An adjustment through hole 4 is opened on the surface of the travel plate 3. A limit groove 5 is opened at the bottom of the inner cavity of the adjustment through hole 4. A locking tooth groove 6 is opened at the top of the inner cavity of the limit groove 5. A limit plate 7 is provided in the middle of the limit groove 5. A locking rack 9 is fixedly connected to the top of the limit plate 7. A fastening nut 12 is sleeved on the top of the fixed post 8. A locking sleeve 13 is sleeved on the outside of the fastening nut 12. A toothed post 14 is fixedly connected to the inner cavity of the locking sleeve 13. A toothed post groove 10 is opened on the top of the fixed post 8.

[0031] The threaded rod 16 is divided into two parts by the rotating block 17. The threads of the two parts are symmetrically arranged. The two parts of the threaded rod 16 are respectively threadedly connected to the inner cavities of the two connecting rods 15. The limiting plate 7 is adapted to the limiting groove 5. The bottom wall of the limiting plate 7 is on the same horizontal plane as the bottom wall of the travel plate 3. The locking rack 9 is adapted to the locking tooth groove 6. The two ends of the locking rack 9 are engaged with the corresponding locking tooth groove 6. The top end of the fixing post 8 is provided with a threaded groove. The top end of the fixing post 8 is threadedly connected to the fastening nut 12. The fastening nut 12 is set on the top of the connecting ring 11. The inner cavity cross-sectional shape of the locking sleeve 13 is adapted to the outer surface cross-sectional shape of the fastening nut 12. The toothed post 14 is adapted to the toothed post groove 10. The toothed post 14 is inserted into the toothed post groove 10 and engages with the inner cavity of the toothed post groove 10.

[0032] In this embodiment, by controlling the fixed column 8 to slide inside the adjusting through hole 4 and the limiting plate 7 to slide inside the limiting groove 5, the linear distance between the fixed column 8 and the output end of the motor 2 can be adjusted, thereby adjusting the reciprocating movement distance of the push rod 18 in sequence. And through the cooperation of the locking rack 9 and the locking groove 6, the position of the limiting plate 7 inside the limiting groove 5 can be limited.

[0033] By rotating the fastening nut 12 to compress the connecting ring 11, the meshing strength between the locking rack 9 and the locking tooth groove 6 can be enhanced, further improving the fixed strength after adjustment. Furthermore, by inserting the tooth post 14 into the tooth post groove 10 and covering the outside of the fastening nut 12, the fastening nut 12 can be limited relative to the fixed post 8, preventing the fastening nut 12 from loosening and achieving the locking effect.

[0034] It is worth noting that the inner wall of the threaded cylinder in the middle of the connecting rod 15 is provided with an annular groove in the axial direction. A nylon 66 damping ring with a Shore hardness of 85A is embedded in the groove. The continuous axial clamping force generated by its elastic deformation forms a helical angle interference fit with the surface of the threaded rod 16 at 15°-20°. When the threaded pair is subjected to axial vibration load, the nylon insert can generate a maximum elastic compression of 0.3mm, which increases the friction coefficient between the thread contact surfaces from 0.15 to 0.68. According to the ASTM D1894 standard test, this effectively suppresses the loosening displacement caused by thread springback.

[0035] Furthermore, the motor 2 in this application is a servo motor with an encoder, and the number of rotations and rotation angle of the motor output shaft are controllable and highly accurate. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0036] Meanwhile, the inner cavity of the locking sleeve 13 is equipped with a magnetic plate that attracts the metal fastening nut 12, improving the fixing effect of the locking sleeve 13. Furthermore, damping pads are provided between the tooth grooves of the tooth post 14 and the tooth post groove 10, further improving the installation strength of the locking sleeve 13.

[0037] The working principle of this utility model is as follows: When in use, the starting motor 2 controls the stroke plate 3 to drive the fixed column 8 to rotate. The push rod 18 can be pushed back and forth by the cooperation of the threaded rod 16 and the connecting rod 15. The push rod 18 can be moved linearly back and forth by the positioning guidance of the guide member 19.

[0038] By rotating the fastening nut 12 to loosen the pressure on the fixing post 8, the limiting plate 7 can slide inside the limiting groove 5 and the fixing post 8 can slide inside the adjusting through hole 4 by sliding the fixing post 8. The position of the fixing post 8 can be fixed by rotating the fastening nut 12 and the position can be locked by the cooperation of the locking rack 9 and the locking groove 6.

[0039] By inserting the toothed column 14 into the toothed column groove 10 and locking the fastening nut 12 with the locking sleeve 13 on the outside of the fastening nut 12 to prevent loosening, the reciprocating stroke distance of one end of the adjusting push rod 18 can be achieved.

[0040] Meanwhile, by rotating the rotating block 17 to control the threaded rod 16 to adjust the distance between the opposite ends of the two connecting rods 15, the reciprocating stroke position of one end of the push rod 18 can be adjusted.

[0041] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0042] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A linear reciprocating push rod structure, comprising a fixed base plate (1) and a motor (2) fixed to one end of the fixed base plate (1), characterized in that: The output end of the motor (2) is connected to a stroke plate (3), and a guide (19) is fixedly connected to the top of the fixed base plate (1). A push rod (18) is inserted in the middle of the guide (19). The top of the travel plate (3) is provided with a threaded rod (16), and the two ends of the threaded rod (16) are symmetrically fitted with connecting rods (15), and the middle of the threaded rod (16) is fixedly connected with a rotating block (17). An adjustment connection mechanism is inserted into one end of the travel plate (3). The adjustment connection mechanism includes a fixed post (8) inserted into one end of the travel plate (3). An adjustment through hole (4) is opened on the surface of the travel plate (3). A limit groove (5) is opened at the bottom of the inner cavity of the adjustment through hole (4). A locking tooth groove (6) is opened at the top of the inner cavity of the limit groove (5). A limit plate (7) is provided in the middle of the limit groove (5). A locking rack (9) is fixedly connected to the top of the limit plate (7). A fastening nut (12) is sleeved on the top of the fixed post (8). A locking sleeve (13) is sleeved on the outside of the fastening nut (12). A toothed column (14) is fixedly connected to the inner cavity of the locking sleeve (13). A toothed column groove (10) is opened at the top of the fixed post (8).

2. The linear reciprocating push rod structure according to claim 1, characterized by: The travel plate (3) and the motor (2) are respectively fixed on both sides of the fixed base plate (1). The fixed base plate (1) is set as an "L" shaped structure, and multiple mounting holes are opened on one side of the fixed base plate (1).

3. The linear reciprocating push rod structure according to claim 1, characterized in that: The connecting rod (15) is fixedly connected to a connecting ring (11) at the end away from the threaded rod (16), and the two connecting rings (11) are rotatably connected to one end of the push rod (18) and one end of the fixed column (8), respectively.

4. The linear reciprocating push rod structure according to claim 1, characterized in that: The threaded rod (16) is divided into two parts by a rotating block (17). The threads of the two parts are symmetrically arranged. The two parts of the threaded rod (16) are respectively connected to the inner cavities of two connecting rods (15).

5. The linear reciprocating push rod structure according to claim 1, characterized in that: The limiting plate (7) is adapted to the limiting groove (5), and the bottom wall of the limiting plate (7) and the bottom wall of the travel plate (3) are on the same horizontal plane.

6. The linear reciprocating push rod structure according to claim 1, characterized in that: The locking rack (9) is adapted to the locking tooth groove (6), and the two ends of the locking rack (9) mesh with the corresponding locking tooth groove (6).

7. The linear reciprocating push rod structure according to claim 3, characterized in that: The top of the fixing post (8) is provided with a threaded groove, and the top of the fixing post (8) is threadedly connected to the fastening nut (12), which is located on the top of the connecting ring (11).

8. The linear reciprocating push rod structure according to claim 1, characterized by: The inner cavity cross-sectional shape of the locking sleeve (13) is adapted to the outer surface cross-sectional shape of the fastening nut (12). The toothed column (14) is adapted to the toothed column groove (10). The toothed column (14) is inserted into the toothed column groove (10) and meshes with the inner cavity of the toothed column groove (10).

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