CN218937939U - Transmission device for drawing tester - Google Patents

Abstract

The utility model relates to a transmission device for a drawing tester, which comprises a power box, a supporting component and a transmission component, wherein the supporting component and the transmission component are arranged in the power box, the supporting component comprises a supporting plate and a plurality of supporting columns, a reduction gearbox and a driving motor are arranged in the middle of the upper side of the supporting plate, the transmission component comprises a screw rod connected to an output shaft of the reduction gearbox and a wire sleeve connected to the screw rod in a threaded manner, the wire sleeve is perpendicular to the bottom surface of the power box and extends out of the bottom surface of the power box, the wire sleeve is connected with a limiting component, a control plate is fixedly arranged on one side of the top end of the wire sleeve, limit switches are arranged on the upper side and the lower side of the control plate, mechanical contacts of the upper limit switch extend to the upper side of the control plate, and mechanical contacts of the lower limit switch extend to the lower side of the control plate. The utility model has simple structure, lower cost compared with the linear displacement sensor, and has stable structure and longer service life by triggering limit protection in a mechanical mode.

Description

Transmission device for drawing tester

Technical Field

The utility model relates to the technical field of building material detection equipment, in particular to a transmission device for a drawing tester.

Background

In the field of construction, along with the increasing development of the building market in China, the main departments of construction in China also have increasingly strict construction quality, and the rivet pulling force for fixing the heat insulation materials, the bonding strength of the heat insulation materials of the wall body, the bonding strength of the facing bricks of the outer wall, the bonding strength of carbon fibers, the bonding strength of mortar, the bonding strength of various plates, the coating on the surface of concrete and the like all need to be detected by using a tester. Based on detection safety, the electric drawing instrument needs to be designed with upper and lower limit protection, namely the drawing rod of the drawing instrument needs to stop rising or falling within a set threshold range, and the conventional design on the market at present is to use a linear displacement sensor, so that the normal detection requirement can be met, but the production cost is higher, the sensor is easy to age, and the service life is shorter.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the defects in the prior art and providing a transmission device for a drawing tester.

The utility model is realized by the following technical scheme:

the utility model provides a draw transmission for tester, includes the headstock, locates supporting component and the drive assembly in the headstock, its characterized in that, supporting component includes the backup pad that is on a parallel with the headstock bottom surface and locates a plurality of support columns between backup pad and the headstock bottom surface, backup pad upside mid-mounting has reducing gear box and driving motor, drive assembly is including the lead screw and the silk shell that threaded connection is connected to the lead screw to the reducing gear box output shaft, silk shell perpendicular to headstock bottom surface and stretch out from the headstock bottom surface, silk shell is connected with the spacing subassembly that prevents its and headstock relative rotation, silk shell top one side fixed mounting has the control panel, limit switch is all installed to control panel upside and downside, and upper side limit switch's mechanical contact stretches to the control panel top, and lower side limit switch's mechanical contact stretches to the control panel below.

Preferably, a plurality of support columns are parallel, the outer Zhou Gujie of silk cover top has the mount pad, spacing subassembly includes two fixed mounting to the gag lever post of mount pad one side, and two gag lever post ends are located the inboard and respectively butt to different support columns of a pair of adjacent support columns.

Preferably, the tail end of the limiting rod is rotatably connected with a limiting bearing, and the outer ring of the limiting bearing is abutted to a supporting column corresponding to the outer ring of the limiting bearing.

Preferably, the control panel is fixed to the mounting seat through two locking screws, the control panel is provided with arc grooves corresponding to the locking screws, the arc centers of the two arc grooves coincide, the whole control panel is rectangular, and the two limit switches are respectively mounted to two non-adjacent end angle positions of the control panel.

Preferably, the mechanical contacts are all elastic sheets.

The beneficial effects of the utility model are as follows:

the utility model has simple structure, lower cost compared with the linear displacement sensor, and has stable structure and longer service life by triggering limit protection in a mechanical way; the limit rod is matched with the support column to limit, so that the front-stage production and processing and the later-stage maintenance are facilitated; the limiting bearing can reduce friction resistance between the tail end of the limiting rod and the supporting column, so that the transmission assembly can stably run; the specific position of the guide sleeve when each limit switch is triggered can be adjusted by adjusting the specific installation angle of the control panel; the mechanical contact is an elastic piece, so that the limit switch can be protected to a certain extent.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic A-A of fig. 1.

In the figure: 1. a power box; 2. a reduction gearbox; 3. a mounting bracket; 4. a support plate; 5. a mounting base; 6. a support column; 7. an arc-shaped groove; 8. a silk sleeve; 9. a mechanical contact; 10. a limit switch; 11. a limit rod; 12. a control board; 13. a screw rod; 14. a limit bearing; 15. and driving the motor.

Detailed Description

The present utility model will be described in further detail below with reference to the drawings and preferred embodiments, so that those skilled in the art can better understand the technical solutions of the present utility model.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

As shown in the figure, the utility model comprises a power box 1, a supporting component and a transmission component which are arranged in the power box 1, wherein the outer side of the power box 1 is mounted on a frame of a drawing instrument, the drawing instrument is characterized in that the supporting component comprises a supporting plate 4 parallel to the bottom surface of the power box 1 and a plurality of supporting columns 6 arranged between the supporting plate 4 and the bottom surface of the power box 1, the top ends of the supporting columns 6 are fixedly connected to the supporting plate 4, the bottom ends of the supporting columns 6 are fixedly connected to the bottom surface of the power box 1, the middle part of the upper side of the supporting plate 4 is provided with a reduction box 2 through a mounting bracket 3, the input shaft of the reduction box 2 is connected with a driving motor 15, the driving motor shell is fixedly mounted on the reduction box shell, the output shaft of the reduction box 2 extends to the lower part of the mounting bracket and the supporting plate 4, the transmission component comprises a screw rod 13 and a wire sleeve 8, the screw rod 13 is connected to the output shaft of the reduction box 2 through a coupling, the wire sleeve 8 is vertical to the bottom surface of the power box 1, one end of the wire sleeve 8 is connected to the screw rod 13 in a threaded manner, the other end of the wire sleeve 8 extends out of the bottom surface of the power box 1 and is used for connecting a tension sensor and a drawing rod, the tail end of the drawing rod is used for connecting a drawing block and carrying out a drawing test, the wire sleeve 8 is connected with a limiting component for preventing the wire sleeve from rotating relative to the power box 1, one side of the top end of the wire sleeve 8 is fixedly provided with a control board 12, both the upper side and the lower side of the control board 12 are provided with limiting switches 10, a mechanical contact 9 of the upper limiting switch 10 extends above the control board 12, a mechanical contact 9 of the lower limiting switch 10 extends below the control board 12, when the drawing test is carried out, a driving motor 15 drives the screw rod 13 to rotate through the reduction box 2, the wire sleeve 8 can ascend or descend under the action of the limiting device, and when the control board 12 moves to a position close to the support board 4, the upper limiting switch 10 can be triggered, thereby control driving motor 15 stop action, when control panel 12 moves to the position that is close to power case 1 bottom surface, can trigger downside limit switch 10 to control driving motor 15 stop action, play the guard action to the transmission of drawing the appearance, this device has lower cost for linear displacement sensor, and triggers spacing protection through the mechanical system, stable in structure has longer life.

The support columns 6 are parallel, the mounting seat 5 is arranged outside Zhou Gujie of the top end of the wire sleeve 8, the limiting component comprises two limiting rods 11 fixedly mounted on one side of the mounting seat 5, the tail ends of the two limiting rods 11 are located on the inner sides of a pair of adjacent support columns 6 and respectively abut against the different support columns 6, the limiting rods are used for limiting the wire sleeve 8 to rotate relative to the braking force box 1, and the limiting rods 11 are matched with the support columns 6 to limit the limiting rods, so that the front-stage production and the processing as well as the rear-stage maintenance are facilitated.

The tail end of the limiting rod 11 is rotatably connected with a limiting bearing 14, and the outer ring of the limiting bearing 14 is abutted to the corresponding supporting column 6, so that friction resistance between the tail end of the limiting rod 11 and the supporting column 6 is reduced, and the transmission assembly can stably run.

The control panel 12 is fixedly mounted to the mounting seat 5 through two locking screws, the control panel 12 is provided with arc grooves 7 corresponding to the locking screws, the arc centers of the two arc grooves 7 are overlapped, the control panel 12 is rectangular as a whole, the two limit switches 10 are respectively mounted to two non-adjacent end angle positions of the control panel 12, and the height difference between the upper limit switch 10 and the lower limit switch 10 can be adjusted by adjusting the specific positions of the locking screws penetrating through the arc grooves 7, so that the specific positions of the guide sleeve when each limit switch 10 is triggered are adjusted.

The mechanical contact 9 is an elastic piece, when the mechanical contact 9 triggers the limit switch 10 corresponding to the mechanical contact, if the control motor needs to delay for a short period of time to stop the action, the guide sleeve can continue to move, and during the period, the mechanical contact 9 can elastically deform, so that a certain buffering effect is achieved, and the limit switch 10 is prevented from being damaged due to the continued movement of the guide sleeve.

The utility model has the working principle that the driving motor drives the screw rod to rotate through the reduction gearbox, the wire sleeve can ascend or descend under the action of the limiting device, so that the pulling rod is driven to carry out a pulling test, when the control board moves to a position close to the supporting plate, the upper limit switch can be triggered, so that the driving motor is controlled to stop acting, when the control board moves to a position close to the bottom surface of the power box, the lower limit switch can be triggered, so that the driving motor is controlled to stop acting, and the transmission device of the pulling instrument is protected. The utility model has simple structure, lower cost compared with the linear displacement sensor, and has stable structure and longer service life by triggering limit protection in a mechanical way; the limit rod is matched with the support column to limit, so that the front-stage production and processing and the later-stage maintenance are facilitated; the limiting bearing can reduce friction resistance between the tail end of the limiting rod and the supporting column, so that the transmission assembly can stably run; the specific position of the guide sleeve when each limit switch is triggered can be adjusted by adjusting the specific installation angle of the control panel; the mechanical contact is an elastic piece, so that the limit switch can be protected to a certain extent.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.

Claims (5)

1. The utility model provides a draw transmission for tester, includes the headstock, locates supporting component and the drive assembly in the headstock, its characterized in that, supporting component includes the backup pad that is on a parallel with the headstock bottom surface and locates a plurality of support columns between backup pad and the headstock bottom surface, backup pad upside mid-mounting has reducing gear box and driving motor, drive assembly is including the lead screw and the silk shell that threaded connection is connected to the lead screw to the reducing gear box output shaft, silk shell perpendicular to headstock bottom surface and stretch out from the headstock bottom surface, silk shell is connected with the spacing subassembly that prevents its and headstock relative rotation, silk shell top one side fixed mounting has the control panel, limit switch is all installed to control panel upside and downside, and upper side limit switch's mechanical contact stretches to the control panel top, and lower side limit switch's mechanical contact stretches to the control panel below.

2. The transmission device for a pull-out tester according to claim 1, wherein a plurality of support columns are parallel, a mounting seat is arranged outside the top end Zhou Gujie of the wire sleeve, the limiting assembly comprises two limiting rods fixedly mounted on one side of the mounting seat, and the tail ends of the two limiting rods are positioned on the inner sides of a pair of adjacent support columns and respectively abut against different support columns.

3. The transmission device for a pull-out tester according to claim 2, wherein the limit rod end is rotatably connected with a limit bearing, and the limit bearing outer ring is abutted to a support column corresponding to the limit bearing outer ring.

4. The transmission device for a pull-out tester according to claim 2, wherein the control board is fixedly mounted to the mounting base by two locking screws, the control board is provided with arc grooves corresponding to the locking screws, the arc centers of the two arc grooves coincide, the control board is rectangular as a whole, and the two limit switches are respectively mounted to two non-adjacent end angle positions of the control board.

5. The transmission device for a pull-out tester according to claim 1, wherein the mechanical contacts are elastic pieces.

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