Transmission push rod

Abstract

The utility model discloses a transmission push rod, which belongs to the technical field of push rods, and is characterized in that a sleeve is clamped in an auxiliary manner through a positioning assembly, so that the overall pressure on a screw rod can be reduced by performing auxiliary positioning on the sleeve when a heavy object is received, the probability of damage to the screw rod is reduced, and the smooth proceeding of subsequent work is ensured. The transmission push rod comprises a base, a mounting shell is vertically fixed to the top of the base, a cavity is formed in the mounting shell, a lead screw is rotatably arranged in the cavity, a sleeve is installed on the base in a sleeving mode, the lead screw is in threaded fit with the sleeve, and a sliding block is fixedly arranged on the outer edge of the bottom of the sleeve in a sleeving mode; a positioning cylinder is mounted at the top of the mounting shell, the top of the sleeve extends out of the positioning cylinder, clamping grooves are symmetrically formed in the outer side edge of the sleeve, the interior of the positioning cylinder is hollow to form a clamping cavity, and a positioning assembly for assisting in positioning of the sleeve is mounted in the clamping cavity.

Description

Technical Field

[0001] The utility model belongs to the technical field of push rods, and in particular relates to a transmission push rod. Background Art

[0002] A transmission push rod is a component used to transmit mechanical or moving parts. It is usually made of metal or plastic and has a rod-like appearance. Its main function is to convert one form of motion into another form of motion to achieve the linkage effect between different mechanisms. Under the action of the push rod, rotating parts such as cams and crankshafts can transmit force through the push rod, so that linear motion actuators such as cylinders and pistons can move at high speed to complete specific tasks.

[0003] Publication No. "CN110380572A" discloses an electric push rod, including a body, on which an AC motor and a lead screw for inputting power are provided, an intermediate gear assembly connecting the AC motor and the lead screw is provided in the body, the intermediate gear assembly includes a motor gear meshed with the output shaft of the AC motor, an intermediate gear meshed on the motor gear, a nut gear meshed below the intermediate gear, the nut gear meshed with the lead screw, the AC motor transmits power to the lead screw through the motor gear, the intermediate gear and the nut gear in sequence, the intermediate gear is integrally formed by a large gear and a small gear, the large gear meshes with the motor gear, and the small gear meshes with the nut gear. In the above manner, the electric push rod of the present invention effectively improves the transmission accuracy of the electric push rod by designing a new gear transmission assembly structure, and the transmission structure is simple, safe and reliable.

[0004] The transmission push rod retrieved above can only adjust the overall length of the push rod. When the push rod needs to support a heavy object, the weight of the heavy object can only be borne by the internal screw rod. After using it for a period of time, the screw rod is very likely to bend, affecting the subsequent use of the subsequent push rod. Therefore, a transmission push rod is used to assist in solving this problem. Utility Model Content

[0005] (1) Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a transmission push rod, which assists in clamping a sleeve through a positioning assembly. When receiving heavy objects, the overall pressure on the screw rod can be reduced by assisting in positioning the sleeve, thereby reducing the probability of damage to the screw rod and ensuring smooth progress of subsequent work.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the utility model provides a transmission push rod, which includes a base, a mounting shell is vertically fixed at the top of the base, a cavity is inside the mounting shell, a screw is rotatably arranged inside the cavity, a sleeve is sleeved and installed on the base, the screw and the sleeve are threadedly matched, a sliding block is sleeved and fixed at the outer edge of the bottom of the sleeve, a positioning cylinder is installed at the top of the mounting shell, the positioning cylinder is extended from the top of the sleeve, and the outer side of the sleeve is symmetrically provided with a clamping groove, the interior of the positioning cylinder is hollow to form a clamping cavity, and a positioning component for assisting the positioning of the sleeve is installed in the clamping cavity;

[0009] The positioning assembly includes two positioning frames, which are hingedly connected by hinges, an armature is embedded and installed on the outer side of the positioning frame, an electromagnetic absorber is symmetrically installed on the positioning cylinder, the armature and the electromagnetic absorber cooperate to absorb, a positioning block is protrudingly provided on the inner side of the positioning frame, the positioning block is engaged with the base, a clamping ring is fixed on the end of the positioning frame away from the hinge, and the two clamping rings are connected and fixed by a tensioning spring.

[0010] Furthermore, the electromagnetic adsorber includes a connecting tube fixed on the positioning tube, an electromagnet is arranged inside the connecting tube, a coil is mounted on the electromagnet, and an adsorption head is arranged at one end of the connecting tube close to the positioning frame, and the adsorption head cooperates with the positioning block for adsorption.

[0011] Furthermore, a plurality of the clamping grooves are arranged on the sleeve, and the plurality of the clamping grooves are arranged at equal distances on the sleeve.

[0012] Furthermore, a servo motor is installed at the top of the base to drive the screw to rotate as a whole, a first meshing wheel is arranged at the front end of the shaft of the servo motor, a second meshing wheel is fixed near the bottom of the screw, and the first meshing wheel and the second meshing wheel are connected by a transmission assembly.

[0013] Further, the transmission assembly includes a first transmission wheel and a second transmission wheel, the outer edge of the second transmission wheel meshes with the outer edge of the second meshing wheel for transmission, and the outer edge of the first transmission wheel meshes with the outer edge of the first meshing wheel for transmission.

[0014] Furthermore, a U-shaped protective shell is provided at the bottom of the base, a limiting strip is symmetrically fixed at the top of the protective shell, and a limiting groove is symmetrically opened at the bottom of the base, and the limiting strip is engaged with the limiting groove.

[0015] Furthermore, a protruding plate is protruding from the top of the protective shell, a receiving groove for receiving the protruding plate is opened on the side of the base, a positioning hole is opened in the receiving groove, and a positioning bolt is arranged on the protruding plate, and the positioning bolt is threadedly matched with the positioning hole.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model cooperates with the positioning cylinder arranged at the top of the installation shell and the electromagnetic absorber and the positioning assembly arranged therein, so that the electromagnetic absorber is energized, and the current flows in the coil, thereby generating suction at the adsorption head and driving the positioning block to be adsorbed as a whole. When the positioning block and the adsorption head are adsorbed as a whole, the positioning frame is driven to be expanded as a whole, and the tensioning spring is driven to be stretched as a whole during the expansion of the positioning frame. When the sleeve ends or the push rod is powered off as a whole, the stretched tensioning spring drives the clamping ring on the positioning frame to be pulled, so that the positioning frame is pulled, and then the positioning blocks on the two positioning frames are clamped in the clamping grooves installed on the sleeve, thereby completing the overall positioning processing of the sleeve. The sleeve is auxiliary clamped by the positioning assembly, and when the heavy object is received, the overall pressure on the screw rod can be reduced by auxiliary positioning of the sleeve, thereby reducing the probability of damage to the screw rod and ensuring the smooth progress of subsequent work.

[0019] The utility model can convert the rotational force of the servo motor into vertical force through the cooperation between the first meshing wheel arranged at the front end of the servo motor, the second meshing wheel on the screw rod, and the transmission component, so as to ensure that the transmission push rod can be pushed to a specified length, thereby adapting to different work requirements and ensuring the smooth progress of subsequent work. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a longitudinal sectional view of the installation shell of the utility model;

[0023] Figure 3 For this utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 4It is a transverse cross-sectional view of the positioning tube of the utility model.

[0025] The marks in the accompanying drawings are: 1. base; 2. mounting shell; 3. servo motor; 4. first meshing wheel; 5. transmission assembly; 51. first transmission wheel; 52. second transmission wheel; 6. second meshing wheel; 7. screw rod; 8. sleeve; 81. snap-in groove; 82. sliding block; 9. positioning cylinder; 10. electromagnetic adsorber; 11. connecting cylinder; 12. electromagnet; 13. coil; 14. adsorption head; 15. positioning assembly; 16. positioning frame; 161. positioning block; 162. armature; 17. tension spring; 18. protective shell; 181. limit strip; 19. protruding plate; 20. positioning bolt; 201. positioning hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] This specific implementation is a transmission push rod, such as Figure 1 As shown, the transmission push rod includes a base 1, a mounting shell 2 is vertically fixed at the top of the base 1, and a screw rod 7 is rotatably arranged inside the mounting shell 2. A sleeve 8 is sleeved and installed on the base 1, and the screw rod 7 and the sleeve 8 are threadedly matched. A sliding block 82 is sleeved and fixed at the outer edge of the bottom of the sleeve 8. A servo motor 3 for driving the screw rod 7 to rotate as a whole is installed at the top of the base 1, a first meshing wheel 4 is arranged at the front end of the machine shaft of the servo motor 3, and a second meshing wheel 6 is fixed near the bottom of the screw rod 7. The first meshing wheel 4 and the second meshing wheel 6 are connected through a transmission assembly 5, and the transmission assembly 5 includes a first transmission wheel 51 and a second transmission wheel 52. The outer edge of the second transmission wheel 52 is meshed with the outer edge of the second meshing wheel 6 for transmission, and the outer edge of the first transmission wheel 51 is meshed with the outer edge of the first meshing wheel 4 for transmission.

[0028] By cooperating between the first meshing wheel 4 arranged at the front end of the servo motor 3, the second meshing wheel 6 on the screw rod 7, and the transmission assembly 5, the rotational force of the servo motor 3 can be converted into vertical force, ensuring that the transmission push rod can be pushed to the specified length, thereby adapting to different work requirements and ensuring that subsequent work proceeds smoothly.

[0029] A U-shaped protective shell 18 is provided at the bottom of the above-mentioned base 1, and a limiting strip 181 is symmetrically fixed at the top of the protective shell 18. A limiting groove is symmetrically opened at the bottom of the base 1, and the limiting strip 181 is engaged with the limiting groove. A protruding plate 19 is protrudingly provided on the top of the protective shell 18, and a receiving groove for accommodating the protruding plate 19 is opened on the side of the base 1. A positioning hole 201 is opened in the receiving groove, and a positioning bolt 20 is provided on the protruding plate 19, and the positioning bolt 20 is threadedly engaged with the positioning hole 201.

[0030] By setting the U-shaped protective shell 18, the protective shell 18 can provide auxiliary protection for the screw rod 7 extending out of the base 1 during operation, and try to avoid bending of the screw rod 7 extending out of the base 1.

[0031] Reference Figure 1 , Figure 3 and Figure 4 As shown, a positioning cylinder 9 is installed at the top of the mounting shell 2, and the positioning cylinder 9 extends out of the top of the sleeve 8. A clamping groove 81 is symmetrically opened on the outer side of the sleeve 8. The interior of the positioning cylinder 9 is hollow to form a clamping cavity. A positioning component 15 for assisting the positioning of the sleeve 8 is installed in the clamping cavity. The positioning component 15 includes two positioning frames 16. The two positioning frames 16 are hingedly connected by hinges. An armature 162 is embedded and installed on the outer side of the positioning frame 16. An electromagnetic absorber 10 is symmetrically installed on the positioning cylinder 9. The armature 162 cooperates with the electromagnetic absorber 10 to absorb The electromagnetic adsorber 10 includes a connecting tube 11 fixed on the positioning tube 9, an electromagnet 12 is arranged inside the connecting tube 11, a coil 13 is sleeved and installed on the electromagnet 12, an adsorption head 14 is arranged at one end of the connecting tube 11 close to the positioning frame 16, the adsorption head 14 cooperates with the positioning block 161 for adsorption, a positioning block 161 is protrudingly provided on the inner side of the positioning frame 16, the positioning block 161 cooperates with the base 1, a clamping ring is fixed at one end of the positioning frame 16 away from the hinge, and the two clamping rings are connected and fixed by a tension spring 17.

[0032] Through the cooperation between the positioning cylinder 9 arranged at the top of the mounting shell 2 and the electromagnetic absorber 10 and the positioning assembly 15 arranged therein, the electromagnetic absorber 10 is energized, and the current flows at the coil 13, thereby generating suction at the absorption head 14, and driving the positioning block 161 to be absorbed as a whole. When the positioning block 161 and the absorption head 14 are absorbed as a whole, the positioning frame 16 is driven to be unfolded as a whole, and the tensioning spring 17 is driven to be stretched as a whole during the unfolding of the positioning frame 16. When the sleeve 8 ends or the push rod is powered off as a whole, the stretched tensioning spring 17 drives the clamping ring on the positioning frame 16 to be pulled, so that the positioning frame 16 is pulled, and then the positioning blocks 161 on the two positioning frames 16 are clamped into the clamping groove 81 installed on the sleeve 8, thereby completing the overall positioning processing of the sleeve 8. The sleeve 8 is auxiliary clamped by the positioning assembly 15. When heavy objects are received, the overall pressure on the screw rod 7 can be reduced by auxiliary positioning of the sleeve 8, thereby reducing the probability of damage to the screw rod 7 and ensuring the smooth progress of subsequent work.

[0033] There are a plurality of the above-mentioned snap-in grooves 81 arranged on the sleeve 8, and the snap-in grooves 81 are equidistantly arranged on the sleeve 8. Through the equidistantly arranged snap-in grooves 81, stable positioning processing can be achieved when the sleeve 8 is adjusted to any length, thereby ensuring the overall stability of the push rod during subsequent work.

[0034] Working principle:

[0035] When the length of the transmission push rod needs to be adjusted, the electromagnetic adsorber 10 is energized, and the current flows in the coil 13, thereby generating suction at the adsorption head 14, and driving the positioning block 161 to be adsorbed as a whole. When the positioning block 161 and the adsorption head 14 are adsorbed as a whole, the positioning frame 16 is driven to be expanded as a whole, and in the process of the positioning frame 16 being expanded, the tensioning spring 17 is driven to be stretched as a whole.

[0036] When the electromagnetic absorber 10 is powered on, the servo motor 3 drives the first meshing wheel 4 to rotate as a whole, and the first meshing wheel 4 and the second transmission wheel 52 are meshed for transmission, so that the second transmission wheel 52 rotates as a whole. During the rotation of the second transmission wheel 52, the first transmission wheel 51 is driven to rotate as a whole, and the first transmission wheel 51 and the second meshing wheel 6 are meshed for transmission, so that the second meshing wheel 6 rotates as a whole. During the rotation of the second meshing wheel 6, the lead screw 7 is driven to rotate as a whole, and the lead screw 7 and the sleeve 8 are threadedly matched, so that the sleeve 8 moves up and down as a whole, so that the overall height of the sleeve 8 is adjusted. After the height of the sleeve 8 is adjusted, the electromagnetic absorber 10 is in a power-off state, and the elongated tensioning spring 17 drives the clamping ring on the positioning frame 16 to be pulled, so that the positioning frame 16 is pulled, and then the positioning blocks 161 on the two positioning frames 16 are clamped into the clamping grooves 81 installed on the sleeve 8, thereby completing the overall positioning processing of the sleeve 8.

[0037] All technical features in this embodiment can be freely combined according to actual needs.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A transmission push rod, comprising a base (1), characterized in that: A mounting shell (2) is vertically fixed at the top of the base (1), the mounting shell (2) has an internal cavity, a screw rod (7) is rotatably arranged inside the cavity, a sleeve (8) is sleeved and installed on the base (1), the screw rod (7) and the sleeve (8) are threadedly matched, a sliding block (82) is sleeved and fixed at the outer edge of the bottom of the sleeve (8), a positioning cylinder (9) is installed at the top of the mounting shell (2), the top of the sleeve (8) extends out of the positioning cylinder (9), the outer side of the sleeve (8) is symmetrically provided with a clamping groove (81), the interior of the positioning cylinder (9) is hollow to form a clamping cavity, and a positioning component (15) for assisting the positioning of the sleeve (8) is installed in the clamping cavity; The positioning assembly (15) comprises two positioning frames (16), the two positioning frames (16) are hingedly connected via hinges, an armature (162) is embedded and installed on the outer side of the positioning frame (16), an electromagnetic absorber (10) is symmetrically installed on the positioning cylinder (9), the armature (162) and the electromagnetic absorber (10) cooperate to absorb, a positioning block (161) is protrudingly provided on the inner side of the positioning frame (16), the positioning block (161) and the base (1) are engaged and snap-fitted, a snap ring is fixed on the end of the positioning frame (16) away from the hinge, and the two snap rings are connected and fixed by a tension spring (17).

2. A transmission push rod according to claim 1, characterized in that: The electromagnetic absorber (10) comprises a connecting tube (11) fixed on the positioning tube (9), an electromagnet (12) is arranged inside the connecting tube (11), a coil (13) is sleeved and mounted on the electromagnet (12), and an absorption head (14) is arranged at one end of the connecting tube (11) close to the positioning frame (16), and the absorption head (14) cooperates with the positioning block (161) for absorption.

3. A transmission push rod according to claim 1, characterized in that: A plurality of the clamping grooves (81) are arranged on the sleeve (8), and the plurality of the clamping grooves (81) are arranged at equal distances on the sleeve (8).

4. A transmission push rod according to claim 1, characterized in that: A servo motor (3) is installed at the top of the base (1) to drive the screw rod (7) to rotate as a whole. A first meshing wheel (4) is arranged at the front end of the shaft of the servo motor (3). A second meshing wheel (6) is fixed near the bottom of the screw rod (7). The first meshing wheel (4) and the second meshing wheel (6) are connected by a transmission assembly (5).

5. A transmission push rod according to claim 4, characterized in that: The transmission assembly (5) comprises a first transmission wheel (51) and a second transmission wheel (52), wherein the outer edge of the second transmission wheel (52) meshes with the outer edge of the second meshing wheel (6) for transmission, and the outer edge of the first transmission wheel (51) meshes with the outer edge of the first meshing wheel (4) for transmission.

6. A transmission push rod according to claim 1, characterized in that: A U-shaped protective shell (18) is provided at the bottom of the base (1), a limiting strip (181) is symmetrically fixed at the top of the protective shell (18), and a limiting groove is symmetrically provided at the bottom of the base (1), and the limiting strip (181) is engaged with the limiting groove.

7. A transmission push rod according to claim 6, characterized in that: A protruding plate (19) is protruding from the top of the protective shell (18); a receiving groove for receiving the protruding plate (19) is provided on the side of the base (1); a positioning hole (201) is provided in the receiving groove; a positioning bolt (20) is provided on the protruding plate (19); and the positioning bolt (20) is threadedly engaged with the positioning hole (201).

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