Repeated tension and compression testing machine for grouting connecting piece of reinforcing steel bar sleeve

Abstract

The utility model relates to the technical field of tension and compression testing equipment, in particular to a repeated tension and compression testing machine for a reinforcing steel bar sleeve grouting connecting piece, which provides movement required by a tension and compression test by arranging a tension and compression device, avoids the problem of liquid leakage of a hydraulic device, reduces the labor intensity of workers, quickly positions a sleeve by arranging a positioning block, and improves the working efficiency. The usability of the machine is improved; comprising a body; the device further comprises a pulling and pressing device, two positioning blocks, two sets of clamping devices and a protection device, the pulling and pressing device is installed on the machine body, and the two positioning blocks, the two sets of clamping devices and the protection device are installed on the machine body and the pulling and pressing device respectively. The machine body provides support, the tension and compression device provides linear reciprocating motion required by a tension and compression test, the positioning block facilitates positioning of the sleeve, the clamping device clamps the sleeve, and the protection device protects the tension and compression device during the test.

Description

Technical Field

[0001] The utility model relates to the technical field of tension and compression testing equipment, in particular to a repeated tension and compression testing machine for a steel sleeve grouting connector. Background Art

[0002] Rebar sleeve grouting connectors need to be subjected to tension and compression tests to detect their mechanical properties before production and use.

[0003] For example, in a type of prior art represented by a Chinese utility model patent with authorization announcement number CN211978547U, a steel sleeve grouting connection joint pull-out test device, its main structure includes a first hydraulic cylinder, a clamping block, a first protective block and a second protective block. The first hydraulic cylinder provides pulling power, the clamping block clamps the sleeve, and the first protective block and the second protective block prevent sleeve fragments from flying and injuring workers when the sleeve is pulled off.

[0004] However, the existing technical equipment still has the following problems when in use: the tension and compression tests are carried out through a hydraulic device, which is prone to leakage under heavy load conditions and requires frequent cleaning and maintenance, which results in high labor intensity for workers. In addition, the existing clamping device is not convenient for positioning the sleeve, and the machine is not easy to use. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a steel sleeve grouting connection repeated tension and compression testing machine that provides the movement required for tension and compression testing by setting a tension and compression device, avoids the problem of hydraulic device leakage, reduces the labor intensity of workers, and quickly positions the sleeve by setting a positioning block, thereby improving the usability of the machine.

[0006] The utility model discloses a repeated tension and compression testing machine for steel sleeve grouting connectors, comprising a machine body; a tension and compression device, two positioning blocks, two sets of clamping devices and a protective device, wherein the tension and compression device is mounted on the machine body, and the two positioning blocks, two sets of clamping devices and the protective device are mounted on the machine body and the tension and compression device respectively; the machine body provides support, the tension and compression device provides the linear reciprocating motion required for the tension and compression test, the positioning block facilitates positioning of the sleeve, the clamping device clamps the sleeve, and the protective device protects the tension and compression device during the test.

[0007] Preferably, the fuselage includes multiple support bases and a frame, the frame is installed on the top of the multiple support bases, a mounting platform 1 is provided at the front end of the frame, a mounting platform 2 is provided at the rear of the frame, and a transmission groove is provided at the top of the frame to provide support.

[0008] Preferably, the pulling and pressing device includes a bracket 1, a motor, a reducer, a gear 1, two gear 2s, two lead screws and a slider. The bracket 1 is installed at the top of the mounting platform 1 of the frame, the motor is installed at the top of the bracket 1, the reducer is fixedly installed at the rear end of the motor, the gear 1 is rotatably installed at the rear end of the reducer, and the motor provides power through the reducer and gear 1. The two gears 2 are both rotatably installed on the frame, and the two gears 2 are respectively engaged with the gears between the gears 1. The two lead screws are both rotatably installed in the transmission groove of the frame, and the two lead screws are respectively fixedly connected to the two gears 2, the slider is slidably installed on the two lead screws, and the slider is respectively engaged with the two lead screw threads; the motor provides power, and the power is transmitted through the reducer, gear 1 and gear 2 to drive the lead screw to rotate, and the rotation of the lead screw drives the slider to move back and forth in a straight line.

[0009] Preferably, the two positioning blocks are respectively installed on the top of the mounting platform 2 and the top of the slider of the frame, and the two positioning blocks are symmetrically provided with a stepped through slot 1; the positioning blocks facilitate quick positioning of the sleeve, and the stepped through slot 1 facilitates quick positioning of sleeves of various specifications.

[0010] Preferably, the clamping device includes two hydraulic cylinders and two pressure blocks, the two hydraulic cylinders are symmetrically mounted on the top of the second mounting platform of the frame, the two pressure blocks are symmetrically mounted on the two hydraulic cylinders, the two pressure blocks are respectively provided with a stepped through groove 2 which is matched in size with the stepped through groove 1 of the positioning block, and the two sets of clamping devices are respectively mounted on the top of the second mounting platform of the frame and the top of the slider; the hydraulic cylinder provides power to drive the two pressure blocks to move closer to or away from each other, and the two pressure blocks clamp the sleeve when they are close to each other, and the stepped through groove 2 is convenient for clamping sleeves of various specifications.

[0011] Preferably, the protective device includes two brackets 2 and a curtain, one bracket 2 is installed at the front end of the mounting platform 2 of the frame, and the other bracket 2 is installed at the rear end of the slider, and the curtain is installed on the two brackets 2, and the curtain is made of a retractable flexible material; the curtain continuously covers the screw when the slider moves to prevent the screw from being stuck by debris generated when the sleeve is damaged.

[0012] Compared with the prior art, the beneficial effects of the present invention are: the machine maintenance is relatively simple, the labor intensity of workers is relatively low; and sleeves of various specifications can be quickly positioned, and the machine is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an axonometric structural diagram of the present utility model;

[0014] Figure 2 It is a schematic diagram of the axonometric structure of the fuselage;

[0015] Figure 3 It is an axonometric structural diagram of the tension and compression device;

[0016] Figure 4 This is an axonometric enlarged structural diagram of the positioning block;

[0017] Figure 5 It is an axonometric enlarged structural diagram of the clamping device;

[0018] Figure 6 It is an axonometric enlarged structural diagram of the protective device.

[0019] Markings in the accompanying drawings: 01, fuselage; 11, support base; 12, frame; 02, tensioning and pressing device; 21, bracket one; 22, motor; 23, reducer; 24, gear one; 25, gear two; 26, screw; 27, slider; 03, positioning block; 04, clamping device; 41, hydraulic cylinder; 42, pressure block; 05, protective device; 51, bracket two; 52, curtain. DETAILED DESCRIPTION

[0020] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0021] Example 1

[0022] like Figure 1 As shown, it includes a body 01; it also includes a tension and compression device 02, two positioning blocks 03, two sets of clamping devices 04 and a protective device 05. The tension and compression device 02 is installed on the body 01, and the two positioning blocks 03, two sets of clamping devices 04 and the protective device 05 are installed on the body 01 and the tension and compression device 02 respectively; the body 01 provides support, the tension and compression device 02 provides the linear reciprocating motion required for the tension and compression test, the positioning block 03 facilitates the positioning of the sleeve, the clamping device 04 clamps the sleeve, and the protective device 05 protects the tension and compression device 02 during the test;

[0023] like Figure 2 As shown, the fuselage 01 includes multiple support bases 11 and a frame 12. The frame 12 is installed on the top of the multiple support bases 11. The front end of the frame 12 is provided with a mounting platform 1, the rear end of the frame 12 is provided with a mounting platform 2, and the top of the frame 12 is provided with a transmission slot.

[0024] like Figure 3As shown, the tensioning and pressing device 02 includes a bracket 21, a motor 22, a reducer 23, a gear 24, two gears 25, two lead screws 26 and a slider 27. The bracket 21 is mounted on the top of the mounting platform 1 of the frame 12, the motor 22 is mounted on the top of the bracket 21, the reducer 23 is fixedly mounted on the rear end of the motor 22, the gear 1 24 is rotatably mounted on the rear end of the reducer 23, and the motor 22 is powered by the reducer 23 and the gear 1 24. The two gears 25 are both rotatably mounted on the frame 12, and the two gears 25 are respectively meshed with the gears of the gear 1 24. The two lead screws 26 are both rotatably mounted in the transmission groove of the frame 12, and the two lead screws 26 are respectively fixedly connected to the two gears 25. The slider 27 is slidably mounted on the two lead screws 26, and the slider 27 is respectively threaded with the two lead screws 26.

[0025] like Figure 4 As shown, the two positioning blocks 03 are respectively mounted on the top of the mounting platform 2 of the frame 12 and the top of the slider 27, and the two positioning blocks 03 are symmetrically provided with a stepped through groove 1;

[0026] like Figure 5 As shown, the clamping device 04 includes two hydraulic cylinders 41 and two pressure blocks 42. The two hydraulic cylinders 41 are symmetrically mounted on the top of the second mounting platform of the frame 12. The two pressure blocks 42 are symmetrically mounted on the two hydraulic cylinders 41. The two pressure blocks 42 are respectively provided with a stepped through groove 2 that matches the size of the stepped through groove 1 of the positioning block 03. The two sets of clamping devices 04 are respectively mounted on the top of the second mounting platform of the frame 12 and the top of the slider 27.

[0027] First, open the hydraulic cylinder 41. The hydraulic cylinder 41 provides power to drive the two pressure blocks 42 away from each other. Then, place the sleeve on the positioning block 03. The stepped through groove one of the positioning block 03 facilitates quick positioning of sleeves of various specifications. Then, open the hydraulic cylinder 41 to make the two pressure blocks 42 approach each other. When the two pressure blocks 42 approach, they clamp the sleeve. The stepped through groove two of the pressure block 42 facilitates clamping of sleeves of various specifications. Then, turn on the motor 22. The motor 22 provides power. The power is transmitted through the reducer 23, gear 1 24 and gear 2 25 to drive the screw 26 to rotate. The rotation of the screw 26 drives the slider 27 to reciprocate linearly. The slider 27 reciprocates linearly to perform tension and compression tests on the sleeve.

[0028] Example 2

[0029] On the basis of Example 1, the following further aspects are included:

[0030] like Figure 6As shown, the protective device 05 includes two brackets 51 and a curtain 52. One bracket 51 is mounted on the front end of the mounting platform 2 of the frame 12, and the other bracket 51 is mounted on the rear end of the slider 27. The curtain 52 is mounted on the two brackets 51. The curtain 52 is made of a retractable flexible material.

[0031] First, open the hydraulic cylinder 41. The hydraulic cylinder 41 provides power to drive the two pressure blocks 42 away from each other. Then, place the sleeve on the positioning block 03. The stepped through groove one of the positioning block 03 facilitates quick positioning of sleeves of various specifications. Then, open the hydraulic cylinder 41 to make the two pressure blocks 42 approach each other. When the two pressure blocks 42 approach, they clamp the sleeve. The stepped through groove two of the pressure block 42 facilitates clamping of sleeves of various specifications. Then, turn on the motor 22. The motor 22 provides power. The power is transmitted through the reducer 23, gear 1 24 and gear 2 25 to drive the screw 26 to rotate. The rotation of the screw 26 drives the slider 27 to reciprocate linearly. The reciprocating motion of the slider 27 performs tension and compression tests on the sleeve. During the tension and compression tests, the curtain 52 continues to cover the screw 26 to prevent the debris generated when the sleeve is damaged from jamming the screw 26.

[0032] like Figures 1 to 6 As shown, the steel sleeve grouting connection repeated tension and compression testing machine of the utility model, when it is working, first open the hydraulic cylinder 41, the hydraulic cylinder 41 provides power to drive the two pressure blocks 42 away from each other, and then place the sleeve on the positioning block 03, the stepped through groove one of the positioning block 03 is convenient for quickly positioning sleeves of various specifications, and then open the hydraulic cylinder 41, so that the two pressure blocks 42 are close to each other, and the sleeve is clamped when the two pressure blocks 42 are close, and the stepped through groove two of the pressure block 42 is convenient for clamping sleeves of various specifications, and then turn on the motor 22, the motor 22 provides power, and the power is transmitted through the reducer 23, gear 1 24 and gear 2 25 to drive the screw 26 to rotate, and the rotation of the screw 26 drives the slider 27 to reciprocate linearly, and the slider 27 reciprocates linearly to perform tension and compression tests on the sleeve. During the tension and compression tests, the curtain 52 continues to cover the screw 26 to prevent the debris generated when the sleeve is damaged from getting stuck in the screw 26.

[0033] The motor 22, reducer 23, gear 1 24, two gear 2s 25, four hydraulic cylinders 41 and curtain 52 of the utility model are purchased on the market. Technicians in this industry only need to install and operate them according to the accompanying instruction manual, without the need for creative work by technicians in this field.

[0034] The main functions achieved by the present invention are: providing the movement required for the tensile and compression test by setting the tensile and compression device 02, avoiding the problem of leakage of the hydraulic device, reducing the labor intensity of workers, and quickly positioning the sleeve by setting the positioning block 03, thereby improving the usability of the machine; it solves the existing technical problems of performing tensile and compression tests through a hydraulic device, the hydraulic device is prone to leakage under heavy load conditions, and requires frequent cleaning and maintenance, the labor intensity of workers is high, and the existing clamping device is not convenient for positioning the sleeve, resulting in poor machine usability.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A steel sleeve grouting connector repeated tension and compression testing machine, comprising a machine body (01); characterized in that: The invention also includes a tension and compression device (02), two positioning blocks (03), two groups of clamping devices (04) and a protective device (05). The tension and compression device (02) is installed on the machine body (01), and the two positioning blocks (03), two groups of clamping devices (04) and the protective device (05) are installed on the machine body (01) and the tension and compression device (02) respectively. The machine body (01) provides support, the tension and compression device (02) provides the linear reciprocating motion required for the tension and compression test, the positioning block (03) facilitates the positioning of the sleeve, the clamping device (04) clamps the sleeve, and the protective device (05) protects the tension and compression device (02) during the test.

2. The steel sleeve grouting connector repeated tension and compression testing machine according to claim 1, characterized in that: The machine body (01) comprises a plurality of support seats (11) and a frame (12), wherein the frame (12) is mounted on the top of the plurality of support seats (11), a first mounting platform is provided at the front end of the frame (12), a second mounting platform is provided at the rear end of the frame (12), and a transmission slot is provided at the top end of the frame (12).

3. The steel sleeve grouting connector repeated tension and compression testing machine according to claim 2, characterized in that: The tension and compression device (02) comprises a bracket (21), a motor (22), a reducer (23), a gear (24), two gears (25), two lead screws (26) and a slider (27), wherein the bracket (21) is mounted on the top of the mounting platform (1) of the frame (12), the motor (22) is mounted on the top of the bracket (21), the reducer (23) is fixedly mounted on the rear end of the motor (22), the gear (24) is rotatably mounted on the rear end of the reducer (23), and the motor (22) is rotated by the reducer. The gear (23) is powered by the first gear (24). The two second gears (25) are both rotatably mounted on the frame (12). The two second gears (25) are respectively engaged with the gears of the first gear (24). The two lead screws (26) are both rotatably mounted in the transmission groove of the frame (12). The two lead screws (26) are respectively fixedly connected to the two second gears (25). The slider (27) is slidably mounted on the two lead screws (26). The slider (27) is respectively threadedly engaged with the two lead screws (26).

4. The steel sleeve grouting connector repeated tension and compression testing machine according to claim 3, characterized in that: The two positioning blocks (03) are respectively mounted on the top of the second mounting platform of the frame (12) and the top of the slider (27), and the two positioning blocks (03) are symmetrically provided with a stepped through groove (1).

5. The steel sleeve grouting connector repeated tension and compression testing machine according to claim 4, characterized in that: The clamping device (04) includes two hydraulic cylinders (41) and two pressure blocks (42). The two hydraulic cylinders (41) are symmetrically mounted on the top of the second mounting platform of the frame (12). The two pressure blocks (42) are symmetrically mounted on the two hydraulic cylinders (41). The two pressure blocks (42) are respectively provided with a second stepped through groove having a size matching that of the first stepped through groove of the positioning block (03). The two groups of clamping devices (04) are respectively mounted on the top of the second mounting platform of the frame (12) and the top of the slider (27).

6. The steel sleeve grouting connector repeated tension and compression testing machine according to claim 3, characterized in that: The protective device (05) comprises two brackets (51) and a curtain (52), one bracket (51) being mounted on the front end of the mounting platform (2) of the frame (12), and the other bracket (51) being mounted on the rear end of the slider (27), and the curtain (52) being mounted on the two brackets (51), and the curtain (52) being made of a retractable flexible material.

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