Worm and gear structure type electric drawing instrument

Abstract

The utility model discloses a worm and gear structure type electric drawing instrument which comprises an operation box body, two sides of the operation box body are provided with adjusting support structures, and a drawing detection structure is arranged in the operation box body. The adjusting and supporting structure comprises two fixing plates, two limiting sleeves, two supporting frames, two driving box bodies and two meshing adjusting assemblies. The utility model relates to the technical field of drawing detection, and adopts the adjusting support structure and the drawing detection structure, the operation box body is supported in an adjustable support mode, the overall height of the operation box body can be adjusted in real time, the overall range of the drawing detection structure is increased, and the detection accuracy is improved. Kinetic energy transmission in the drawing process is carried out in a worm and gear structure mode, the reduction ratio of the worm and gear mode is large, the worm and gear mode has a self-locking function and can be better held, and therefore the detection process is more stable, detection results are more consistent, and data are more reliable and accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of drawing detection, in particular to an electric drawing instrument with a worm gear structure. Background Art

[0002] The pulling machines currently on the market cannot adjust the overall height of the pulling structure, which limits the overall specifications of the materials being tested. Most of them use a manual joystick to perform pulling tests or a ball screw to perform electric pulling tests. The manual method has low costs but cannot control the loading speed well during the process. The ball screw type electric pulling machine has a small reduction ratio and a small measuring range. In view of this, there may already be technical means to solve the above problems in the prior art, but this case intends to provide an alternative or replacement technical solution. Utility Model Content

[0003] To achieve the above objectives, the utility model is implemented through the following technical solutions: an electric puller with a worm gear structure, comprising an operating box, adjustment support structures are provided on both sides of the operating box, and a pulling detection structure is provided in the operating box;

[0004] The adjustment support structure comprises: two fixing plates, two limiting sleeves, two support frames, two drive housings and two engagement adjustment components;

[0005] The two fixing plates are respectively installed on the two side walls of the operating box, the two limiting sleeves are respectively installed on the outsides of the two fixing plates, the two supporting frames are respectively movably embedded in the two limiting sleeves, the two driving boxes are respectively fixedly installed on the outsides of the two limiting sleeves, and the two engagement adjustment components are respectively embedded in the two driving boxes and the two supporting frames.

[0006] Preferably, one of the engagement adjustment assemblies comprises: a drive rod, a first worm gear and a rack;

[0007] The driving rod is movably embedded in the driving box, the first worm gear is fixedly installed on the upper end of the driving rod, the rack is fixedly installed in the supporting frame, and one side of the first worm gear is meshed with the rack.

[0008] Preferably, the pull-out detection structure comprises: a motor, a lead screw, a second worm gear and a worm;

[0009] The motor is fixedly installed on one side of the operating box, the screw rod is movably embedded in the center of the operating box, the second worm wheel is located outside the screw rod, one end of the worm wheel is meshed with one side of the second worm wheel, and is movably embedded in one side of the operating box.

[0010] Preferably, an operating nut is provided at the top end of the driving rod.

[0011] Preferably, the fixing plate is fixed to one side of the operating box by bolts.

[0012] Preferably, a supporting foot is provided at the lower end of the supporting frame.

[0013] Beneficial Effects

[0014] The utility model provides an electric pulling instrument with a worm gear structure, which has the following beneficial effects: the adjustable support structure and the pulling detection structure adopted in this case adopt an adjustable support method to support the operating box, which can realize real-time adjustment of the overall height of the operating box, increase the overall measuring range of the pulling detection structure, and adopt a worm gear structure to transfer kinetic energy in the pulling process. The worm gear method has a large reduction ratio and a self-locking function, which can better hold the connection, and effectively solves the problem of unstable kinetic energy transmission during the pulling process and poor holding during the pulling process when the rocker of the traditional manual pulling instrument is pulled, thereby making the detection process more stable, the detection results more consistent, and the data more reliable and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main three-dimensional structure of the worm gear structure electric pulling instrument of the utility model.

[0016] Figure 2 It is a schematic diagram of the main cross-sectional structure of the worm gear structure electric pulling instrument of the utility model.

[0017] Figure 3 It is a side view cross-sectional structural schematic diagram of the worm gear structure type electric pulling instrument of the utility model.

[0018] Figure 4 It is a partial three-dimensional structural schematic diagram of the worm gear structure type electric pulling instrument of the utility model.

[0019] In the figure: 1. support frame, 2. operating box, 3. control box, 4. motor, 5. first gear, 6. linkage gear, 7. mounting bearing, 8. worm, 9. second gear, 10. auxiliary bearing, 11. limiting sleeve, 12. threaded sleeve, 13. second worm gear, 14. lead screw, 15. limiting groove, 16. connector, 17. fixed shaft, 18. fixed plate, 19. limiting frame, 20. driving box, 21. driving rod, 22. first worm gear, 23. rack, 24. operating nut, 25. supporting foot. DETAILED DESCRIPTION

[0020] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0021] Example: See Figure 1-4 In order to solve the problem that the kinetic energy transmission is unstable and the pulling process is not well maintained when the rocker of the traditional manual puller is pulled, and at the same time solve the problem that the height of the current puller cannot be adjusted, a worm gear structure type electric puller is set, including an operating box 2, characterized in that adjustment support structures are provided on both sides of the operating box 2, and a pulling detection structure is provided in the operating box 2;

[0022] The adjustment support structure includes: two fixing plates 18, two limiting frames 19, two support frames 1, two driving boxes 20 and two engagement adjustment components;

[0023] The two fixing plates 18 are respectively installed on the two side walls of the operating box 2, the two limiting frames 19 are respectively installed on the outsides of the two fixing plates 18, the two supporting frames 1 are respectively movably embedded in the two limiting frames 19, the two driving boxes 20 are respectively fixedly installed on the outsides of the two limiting frames 19, and the two engagement adjustment components are respectively embedded in the two driving boxes 20 and the two supporting frames 1.

[0024] When in use, the staff first embeds the two support frames 1 into the two limit frames 19 respectively, and preliminarily limits the two support frames 1 through the two limit frames 19. Then, by operating the engagement adjustment components in the driving box 20, the positions of the two support frames 1 in the two limit frames 19 can be changed, thereby realizing the overall height adjustment of the operating box 2 to meet different pulling detection requirements.

[0025] One of the meshing adjustment components includes: a driving rod 21, a first worm gear 22 and a rack 23;

[0026] The driving rod 21 is movably embedded in the driving box 20 , the first worm gear 22 is fixedly installed on the upper end of the driving rod 21 , the rack 23 is fixedly installed in the supporting frame 1 , and one side of the first worm gear 22 is meshed with the rack 23 .

[0027] When adjusting the height of the support frame 1, the staff twists the drive rod 21 in the drive box 20, and drives the first worm gear 22 to rotate through the drive rod 21. Under the meshing action of the rack 23 on one side of the first worm gear 22, the rack 23 and the support frame 1 can be moved in the limit frame 19, thereby achieving the purpose of adjusting the support frame 1.

[0028] The pull-out detection structure comprises: a motor 4, a screw 14, a second worm gear 13 and a worm 8;

[0029] The motor 4 is fixedly installed on one side of the operating box 2, the screw rod 14 is movably embedded in the center of the operating box 2, the second worm gear 13 is located outside the screw rod 14, one end of the worm 8 is meshed with one side of the second worm gear 13, and is movably embedded in one side of the operating box 2.

[0030] It also includes: a control box 3, which is located on one side of the operating box 2; it also includes: a first gear 5, a linkage gear 6, two mounting bearings 7, and a second gear 9; the motor 4 is fixedly installed on one side of the operating box 2, the first gear 5 is fixedly installed on the driving end of the motor 4, the linkage gear 6 is installed on one side of the operating box 2, and meshes with the first gear 5, the two mounting bearings 7 are respectively installed on one side of the operating box 2, the two ends of the worm 8 are movably embedded in the two mounting bearings 7, the second gear 9 is fixedly installed on one side of the worm 8, and the second gear 9 is meshed with the linkage gear 6, and it also includes: two auxiliary bearings 10 and a limiting sleeve 11; the two auxiliary bearings 10 are respectively installed on the upper wall and the lower wall of the operating box 2, and the limiting sleeve 11 is fixedly embedded in the operating In the lower wall of the box body 2, a limiting protrusion is provided on one side of the limiting sleeve 11, and it also includes: a threaded sleeve 12, a limiting groove 15 and a connecting head 16; the two ends of the threaded sleeve 12 are respectively movably embedded in the two auxiliary bearings 10, the second worm gear 13 is fixedly sleeved on the outer side of the threaded sleeve 12 and meshed with one side of the worm 8, the screw rod 14 is movably embedded in the threaded sleeve 12, the limiting groove 15 is opened on one side of the screw rod 14, the connecting head 16 is fixedly installed at the lower end of the screw rod 14, the limiting groove 15 is movably sleeved on the limiting protrusion on one side of the limiting sleeve 11, a fixed shaft 17 is provided at the connection between the linkage gear 6 and the operating box body 2, an operating nut 24 is provided at the top of the driving rod 21, the fixing plate 18 is fixed to one side of the operating box body 2 by bolts, and a supporting foot 25 is provided at the lower end of the support frame 1.

[0031] When in use, the staff first moves the device to the specified position, supports the device through the two supporting frames 1, connects the test workpiece through the connecting head 16 at the bottom of the screw rod 14, and then drives the motor 4 to work through the control box 3. The first gear 5 is meshed with the linkage gear 6 to drive the second gear 9 at one end of the worm 8 to rotate, so that the worm 8 rotates between the two mounting bearings 7. At the same time, under the action of the cooperation between the worm 8 and the second worm wheel 13, the second worm wheel 13 and the threaded sleeve 12 rotate in the two auxiliary bearings 10. Since the limiting groove 15 on one side of the screw rod 14 cooperates with the limiting protrusion on one side of the limiting sleeve 11, the screw rod 14 cannot rotate. Therefore, during the rotation of the threaded sleeve 12, the screw rod 14 is lifted and lowered in the threaded sleeve 12, driving the connecting head 16 to adjust the height, and performing a pulling test on the test workpiece at the lower end of the connecting head 16. The motor 4 can maintain a good uniform rotation. When the motor 4 rotates at a uniform speed, it will drive the screw to move up and down at a uniform speed, thereby realizing a uniform and uniform pulling test.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A worm gear structure electric drawing instrument, including an operating box, characterized in that: Adjustment support structures are provided on both sides of the operation box, and a pulling detection structure is provided inside the operation box; The adjustment support structure comprises: two fixing plates, two limiting frames, two support frames, two driving boxes and two engagement adjustment components; The two fixed plates are respectively installed on the two side walls of the operating box, the two limit frames are respectively installed on the outsides of the two fixed plates, the two support frames are respectively movably embedded in the two limit frames, the two drive boxes are respectively fixedly installed on the outsides of the two limit frames, and the two engagement adjustment components are respectively embedded in the two drive boxes and the two support frames.

2. The electric puller with worm gear structure according to claim 1, characterized in that: One of the meshing adjustment assemblies includes: a drive rod, a first worm gear, and a rack; The driving rod is movably embedded in the driving box, the first worm gear is fixedly installed on the upper end of the driving rod, the rack is fixedly installed in the supporting frame, and one side of the first worm gear is meshed with the rack.

3. The electric puller with worm gear structure according to claim 1, characterized in that: The pull-out detection structure comprises: a motor, a lead screw, a second worm gear and a worm; The motor is fixedly installed on one side of the operating box, the screw rod is movably embedded in the center of the operating box, the second worm wheel is located outside the screw rod, one end of the worm wheel is meshed with one side of the second worm wheel, and is movably embedded in one side of the operating box.

4. The electric puller with worm gear structure according to claim 2, characterized in that: An operating nut is arranged at the top end of the driving rod.

5. The electric pulling instrument of worm gear structure according to claim 1, characterized in that: The fixing plate is fixed to one side of the operation box body by bolts.

6. The electric puller with worm gear structure according to claim 1, characterized in that: The lower end of the support frame is provided with a support foot.

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