CN114965065A

CN114965065A - Large-specification bolt tensile tester

Info

Publication number: CN114965065A
Application number: CN202210647202.XA
Authority: CN
Inventors: 李春林; 孙善烨
Original assignee: Jinan Popwil Instrument Co ltd
Current assignee: Jinan Popwil Instrument Co ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-08-30

Abstract

The application discloses a large-specification bolt tensile tester, which relates to the field of detection equipment and comprises a force application control mechanism and an adjusting mechanism, wherein the force application control mechanism is connected with the adjusting mechanism through a bearing frame, and the top surface of the bearing frame is provided with a clamp guide rail; the output end of the force control mechanism is provided with a first clamp assembly; the output end of the adjusting mechanism is provided with a second clamp assembly; guide wheel sets are arranged on two sides of the first clamp assembly and the second clamp assembly, and the guide wheel sets are matched with the clamp guide rails; this application check out test set adopts horizontal structure, and the actuator application of force that the level was placed carries out the loading test, and the detector of structure is more firm about than the tradition, and working process stability is also stronger, and experimental loading mode, loading speed control through the servo technique of electricity liquid, simple structure, and occupation space is little, can satisfy the pressure of big specification long bolt detection time measuring and tensile requirement.

Description

Large-specification bolt tensile tester

Technical Field

The application relates to the field of detection equipment, in particular to a large-specification bolt tensile tester.

Background

With the rapid development of economy, the demand of wind power energy is increasing day by day. Wind energy is increasingly gaining attention as a clean renewable energy source in all countries of the world. The wind energy storage capacity is very large and the distribution area is wide in China, the wind power generation industry is rapidly developed, and the wind power generation becomes an important direction for the development of new energy in China.

The rapid development of wind power generation also puts high demands on the quality of wind power generation equipment. The safe, reliable and efficient wind power generation equipment is a powerful guarantee for the development of wind power generation. Quality testing of wind power plants plays a crucial role. The performance detection of the wind power bolt, which is a key part of the wind power generation equipment, is an important link for ensuring the quality of the wind power equipment; how to detect and control such large-sized bolts, including the performance and quality in terms of tensile strength, will be related to the delivery quality and service life of the large-sized equipment.

At present, a bolt tensile tester generally used adopts a vertical structure, a clamp adopts a general wedge-shaped clamp or a T-shaped clamp, and a bolt penetrates into a round hole to test the tensile property of the bolt. The tester can only meet the bolt test of small and short sample specifications.

For the wind power bolt with the large diameter and the long specification, the specification is usually above M45, part of the wind power bolt even reaches M90, and the length of the wind power bolt is between 500 and 1500mm, so that a conventional bolt tensile tester can not be applied to the bolt product with the specification at all, and a proper clamping clamp for large specification bolt tests is not provided. Therefore, designing a bolt tester which meets the requirements of large specification and large length variation range is a great technical problem to be solved urgently.

Disclosure of Invention

In order to solve the technical problem, the application provides a large-specification bolt tensile tester, and the large-specification bolt tensile tester is suitable for mechanical property detection of various large-specification long bolts, is matched with a special clamp group, and fills up the blank of large-specification bolt property detection equipment.

The technical problem of the application is realized by the following technical scheme: a large-specification bolt tensile tester comprises a force application control mechanism and an adjusting mechanism, wherein the force application control mechanism is connected with the adjusting mechanism through a bearing frame, and the force application control mechanism, the bearing frame and the adjusting mechanism form a horizontal tester structure; the top surface of the bearing frame is provided with a clamp guide rail; the output end of the force control mechanism is provided with a first clamp assembly; the output end of the adjusting mechanism is provided with a second clamp assembly; and guide wheel sets are arranged on two sides of the first clamp assembly and the second clamp assembly, and are matched with the clamp guide rails.

By adopting the technical scheme: this application overall configuration design is horizontal structure, and installation and test procedure are more firm, and first anchor clamps assembly and second anchor clamps assembly pass through the guide pulley group and realize reciprocating motion on bearing frame top surface, and horizontal bearing frame intensity is high, and the atress is even, and guide structure is simple, easily observes and overhauls.

Further, the force application control mechanism comprises an actuator, and the actuator is installed on the outer end face of the oil cylinder seat through a first bolt.

Furthermore, the bearing frame comprises two stress frames which are parallel to each other, two ends of the bearing frame are respectively arranged on the inner end faces of the force control mechanism and the adjusting mechanism through mounting end plates, two clamp guide rails are arranged on the two stress frames, and a protective cover guide rail is arranged on the outer side of each clamp guide rail.

Furthermore, the adjusting mechanism comprises an adjusting frame body and an adjusting screw rod which is arranged to penetrate through the adjusting frame body, a motor set is arranged above the adjusting frame body, the motor set can control the adjusting screw rod to reciprocate, and one end of the adjusting screw rod is connected with the second clamp assembly; the other end of the adjusting screw rod is provided with a limiting baffle, and the adjusting mechanism is provided with a limiting seat matched with the limiting baffle for use.

Further, the motor set comprises an adjusting motor and a bearing seat, the adjusting motor is mounted above the adjusting frame body through a motor mounting seat, and the bearing seat penetrates through two ends of the adjusting frame body; a small chain wheel is arranged at the output shaft end of the adjusting motor; a large chain wheel is arranged on the bearing seat; the large chain wheel is connected with the small chain wheel through a chain.

Further, the first clamp assembly comprises a clamp group and a load sensor; the second clamp assembly comprises a clamp group and an anti-loosening plate.

Further, the assembly sample clamped by the first clamp assembly and the second clamp assembly comprises a piece to be tested, a stretching gasket and a fastening nut; tensile gaskets are respectively installed at two ends of the piece to be tested, the tensile gaskets are respectively installed on the inner sides of the clamping grooves of the two clamp groups, and the ends of the tensile gaskets are locked through fastening nuts.

Furthermore, an auxiliary frame is arranged at the rear end of the bearing frame and comprises auxiliary frames symmetrically arranged on two sides, the tail ends of the auxiliary frames are connected through tail plates to form a protection area, and a protection cover guide rail is arranged on the upper plane of each auxiliary frame.

Further, the bottom of the tester is provided with a ground fixing device.

Further, a reinforced angle plate is arranged between the adjusting mechanism and the bearing frame.

In summary, the present application has the following beneficial effects:

1. this application check out test set adopts horizontal structure, and the actuator application of force that the level was placed carries out the loading test, and the detector of structure is more firm about than the tradition, and working process stability is also stronger, and experimental loading mode, loading speed control through the servo technique of electricity liquid, and the actuator adopts draws formula structure, has the pole chamber to lead to the high-pressure oil to test, simple structure, and occupation space is little, can satisfy the pressure and the tensile requirement of big specification stay bolt detection time measuring.

2. This application sets up many places protection machanism: a safety plate is arranged above the clamp group to prevent the sample from breaking and flying out; the stress frame and the attached frame are provided with the protective cover guide rails, the protective cover can completely protect the main body of the device, damage to the outside caused by sample fracture in the test process is avoided, and the test detection result can be prevented from being influenced by external interference in the test process.

3. This application anchor clamps body both sides installation guide holder sets up the guide pulley group on the guide holder, realizes pressing from both sides specific reciprocating motion at anchor clamps guide rail roll displacement through the guide pulley group, and this moving mechanism intensity is high, the atress is even, reciprocating motion is apart from the span big, is applicable to the performance detection of big specification long bolt more.

Drawings

FIG. 1 is a schematic structural diagram of the present application;

FIG. 2 is a top view of the present application;

FIG. 3 is an enlarged partial view of FIG. 1;

FIG. 4 is a schematic view showing the connection of the first jig assembly, the second jig assembly and the fitting sample;

FIG. 5 is a schematic view of a second fixture assembly;

FIG. 6 is a schematic view of a first clamp assembly;

FIG. 7 is a schematic view of an adjusting mechanism;

fig. 8 is a schematic view of an assembled sample structure.

Description of reference numerals:

1. an application force control mechanism;

101. an actuator; 102. a first bolt; 103. a cylinder block;

2. a load-bearing frame;

201. connecting the bent plates; 202. mounting an end plate; 203. a stressed frame; 204. a clamp guide rail; 205. a shield guide rail; 206. a shield baffle;

3. an adjustment mechanism;

301. adjusting the frame body; 302. a motor unit; 3021. a motor mounting seat; 3022. adjusting the motor; 3023. a large sprocket; 3024. a chain; 3025. a small sprocket; 3026. a bearing seat; 303. adjusting a screw rod; 304. a limit baffle; 305. a limiting seat;

4. a clamp group; 401. a clamp body; 402. a guide seat; 403. adjusting the screw; 404. locking the nut; 405. a security pane; 406. a shaft pull cover; 407. a guide wheel group;

5. an anti-loosening plate; 6. a load sensor;

7. assembling a sample;

701. a piece to be tested; 702. stretching the gasket; 703. fastening a nut;

8. an auxiliary frame;

801. an attached frame; 802. a tail plate;

9. a ground fixing device;

901. a support leg; 902. anchor bolt

10. The gusset is reinforced.

Detailed Description

As shown in fig. 1-8, the present application discloses a large-specification bolt tensile tester, which is further described in detail below with reference to the accompanying drawings.

Referring to fig. 1 and 2, the present application includes an application force control mechanism 1 and an adjusting mechanism 3, the application force control mechanism 1 and the adjusting mechanism 3 are connected through a bearing frame 2, the application force control mechanism 1, the bearing frame 2 and the adjusting mechanism 3 are all horizontal mounting structures, and an assembly sample 7 is tested in a horizontal state.

Referring to fig. 1 and 3, the top surface of the carrying frame 2 is provided with a clamp guide rail 204; the output end of the force control mechanism 1 is provided with a first clamp assembly; the output end of the adjusting mechanism 3 is provided with a second clamp assembly; the first clamp assembly and the second clamp assembly are arranged oppositely, guide wheel sets 407 are arranged on two sides of the first clamp assembly and the second clamp assembly, and the guide wheel sets 407 are matched with the clamp guide rails 204 and can move on the clamp guide rails 204 in a reciprocating mode.

During testing, the position of the first clamp assembly is adjusted through the force application control mechanism 1 according to the length size of a piece 701 to be tested, the position of the second clamp assembly is adjusted through the adjusting mechanism 3, two ends of an assembly sample 7 are respectively fixed on the clamp bodies in the first clamp assembly and the second clamp assembly and locked, external test software parameters are set, and the force application control mechanism 1 is started to perform tensile test.

Referring to fig. 3, the force control mechanism 1 includes an actuator 101, wherein the actuator 101 is mounted on the outer end surface of a cylinder block 103 through a first bolt 102.

Referring to fig. 1 and 2, the bearing frame 2 includes two parallel force-bearing frames 203, two ends of the bearing frame 2 are respectively disposed on inner end surfaces of the force-applying control mechanism 1 and the adjusting mechanism 3 through mounting end plates 202, the bearing frame 2 plays a role in connecting the adjusting mechanism 3 and the force-applying control mechanism 1, and provides a supporting force for a first fixture assembly and a second fixture assembly, the two force-bearing frames 203 are both provided with fixture guide rails 204, the outer sides of the fixture guide rails 204 are both provided with shield guide rails 205, and a shield is selectively mounted on the shield guide rails 205, where a shield structure is not shown in the figure.

Referring to fig. 7, the adjusting mechanism 3 includes an adjusting frame body 301 and an adjusting screw 303 penetrating through the adjusting frame body 301, and a screw nut, a bearing, a guide sleeve and other mechanisms are arranged inside the adjusting frame body 301 to position the adjusting screw 303 and bear axial tension. A motor set 302 is arranged above the adjusting frame body 301, and the motor set 302 can control the adjusting screw 303 to reciprocate.

Referring to fig. 7, one end of the adjusting screw 303 is connected to a second fixture assembly, and a placing loosening plate 5 is disposed at the joint for locking and loosening prevention. The other end of the adjusting screw 303 is provided with a limiting baffle 304, the adjusting mechanism 3 is provided with a limiting seat 305 matched with the limiting baffle 304, when the adjusting screw 303 moves to a limiting position, the limiting baffle 304 senses the positions of the limiting baffle 304 and the limiting seat 305 and automatically stops the movement of the adjusting screw 303, so that the equipment is prevented from being damaged due to overload.

With reference to fig. 7, the motor assembly 302 specifically includes an adjusting motor 3022 and a bearing block 3026, the adjusting motor 3022 is mounted at a central position right above the adjusting frame body 301 through a motor mounting seat 3021, and the bearing block 3026 penetrates through two ends of the adjusting frame body 301; a small chain wheel 3025 is arranged at the output shaft end of the adjusting motor 3022; a large chain wheel 3023 is arranged on the bearing block 3026; the large chain wheel 3023 and the small chain wheel 3025 are connected through a chain 3024, and the small chain wheel 3025 drives the large chain wheel 3023 to further drive the adjusting screw 303 to move, so that the tensile test process of the to-be-tested part 701 is completed.

Referring to fig. 5 and 6, the first clamp assembly comprises a clamp group 4 and a load sensor 6, wherein the load sensor 6 is connected with a piston rod of the actuator 101 through a connecting rod and connected with a clamp body 401 through a sensor connecting screw; the second clamp assembly includes a clamp group 4 and an anti-loosening plate 5.

Referring to fig. 8, the assembly sample 7 clamped by the first clamp assembly and the second clamp assembly includes a piece to be measured 701, a tension washer 702 and a fastening nut 703; tensile gaskets 702 are respectively installed at two ends of the piece to be tested 701, the tensile gaskets 702 are respectively installed on the inner sides of the clamping grooves of the two clamp groups 4, and the ends of the tensile gaskets 702 are locked through fastening nuts 703.

Referring to fig. 1 and 2, the rear end of the bearing frame 2 is provided with an auxiliary frame 8, the auxiliary frame 8 includes auxiliary frames 801 symmetrically arranged at two sides, the ends of the auxiliary frames 801 are connected through tailboards 802 to form a protection area, and the upper plane of the auxiliary frames 801 is provided with a guard rail 205, which has the same structure as the guard rail 205 on the bearing frame 2 and is installed separately.

Referring to fig. 1 and 3, a ground fixing device 9 is arranged at the bottom of the tester, and due to the horizontal structure and the large axial distance, in order to stabilize the equipment base, support legs 901 are respectively arranged at the front, middle and rear three positions of the bottom of the tester, and the support legs 901 are fixed on the bottom surface through foundation screws 902; the three support legs 901 are respectively installed at the bottom of the tail plate 802, the bottom of the adjusting frame body 301 and the bottom of the oil cylinder base 103.

Referring to fig. 1, 2 and 7, a reinforced angle plate 10 is disposed between the adjusting mechanism 3 and the load-bearing frame 2 for firmly connecting the adjusting frame body 301 with the force-bearing frame 203.

Referring to fig. 3, a connection bent plate 201 is disposed at the connection between the force-bearing frame 203 and the cylinder base 103, so as to further fasten and connect the cylinder base 103 and the force-bearing frame 203.

Referring to fig. 3, a shield baffle 206 is disposed at an end of the shield guide rail 205 to limit the movement of the shield.

With continued reference to fig. 5 and 6, the clamp group 4 includes a clamp body 401, a guide block 402, an adjusting screw 403, a lock nut 404, a safety plate 405, and a shaft pull cover 406; the front end of the clamp body 401 is provided with a U-shaped groove for loading and positioning a to-be-tested piece 701, the guide seats 402 are arranged at the left end and the right end of the clamp body 401, the guide wheel sets 407 are arranged on the guide seats 402, and the guide wheel sets 407 are fastened on the guide seats 402 through shaft pull covers 406; the height of the guide wheel set 407 can be adjusted by an adjusting screw 403 and then fixed by a locking nut 404. In this way, the piston rod, the load sensor 6 or the anti-loosening plate 5, the clamp body 401, and the guide roller group 407 form an integral body, and are linearly moved along the clamp guide rail 204 by the support of the guide roller group 407. In order to prevent the sample from breaking and flying out, a safety plate 405 is designed on the upper plane of the clamp body 401.

The working principle of this application does:

1. under the control of a servo valve, a right end cavity of the actuator 101 is communicated with high-pressure hydraulic oil, and a left end cavity of the actuator 101 is connected with an oil return tank, so that a piston rod extends out to drive the first clamp assembly to move towards the left side and stop at a proper position. The safety plate 405 of the first clamp assembly is removed, and a U-shaped opening in the upper portion of the clamp body 401 is exposed, so that the part 701 to be tested can be placed conveniently in the next step.

2. The adjusting motor 3022 is started to make the adjusting screw 303 move linearly, so as to drive the side clamp body 401 to move horizontally and adjust to a proper position. The safety plate 405 is removed, and a U-shaped opening at the upper part of the clamp body 401 is exposed, so that a sample can be placed conveniently in the next step.

3. Installation of the sample: assembling the piece to be tested 701 in advance according to the schematic diagram of the assembling sample 7, then horizontally hoisting the assembling sample 7 through hoisting equipment, and horizontally placing the assembling sample 7 to the centers of the U-shaped arcs of the first fixture assembly and the second fixture assembly. When placing the sample, need place left tensile gasket 702 inside left side anchor clamps body 401, the tensile gasket 702 of right side is placed inside right side anchor clamps body 401 to fix a position through tensile gasket 702 boss and the U type groove of anchor clamps body 401, with sample both ends are coaxial when guaranteeing tensile test.

4. The safety plates 405 for resetting the two clamp groups 4 are installed, respectively.

5. And setting parameters such as test speed and the like through test software to perform a tensile test.

6. After the test is completed, the safety plates 405 of the two clamp groups 4 are removed, the sample is taken out, and the detection parameters are read to prepare for the next test.

The foregoing is merely a detailed description of the invention that enables one skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a big specification bolt tensile test appearance which characterized in that: the horizontal tester comprises a force application control mechanism (1) and an adjusting mechanism (3), wherein the force application control mechanism (1) is connected with the adjusting mechanism (3) through a bearing frame (2), and the force application control mechanism (1), the bearing frame (2) and the adjusting mechanism (3) form a horizontal tester structure; a clamp guide rail (204) is arranged on the top surface of the bearing frame (2); the output end of the force control mechanism (1) is provided with a first clamp assembly; the output end of the adjusting mechanism (3) is provided with a second clamp assembly; and guide wheel sets (407) are arranged on two sides of the first clamp assembly and the second clamp assembly, and the guide wheel sets (407) are matched with the clamp guide rails (204).

2. The large format bolt tensile tester of claim 1, wherein: the force application control mechanism (1) comprises an actuator (101), wherein the actuator (101) is mounted on the outer end face of an oil cylinder base (103) through a first bolt (102).

3. The large format bolt tensile tester of claim 1, wherein: the bearing frame (2) comprises two stress frames (203) which are parallel to each other, two ends of the bearing frame (2) are respectively arranged on inner end faces of the force application control mechanism (1) and the adjusting mechanism (3) through mounting end plates (202), two clamp guide rails (204) are arranged on the two stress frames (203), and protective cover guide rails (205) are arranged on the outer sides of the clamp guide rails (204).

4. The large format bolt tensile tester of claim 1, wherein: the adjusting mechanism (3) comprises an adjusting frame body (301) and an adjusting screw rod (303) which penetrates through the adjusting frame body (101), a motor set (302) is arranged above the adjusting frame body (301), the motor set (302) can control the adjusting screw rod (303) to move in a reciprocating mode, and one end of the adjusting screw rod (303) is connected with a second clamp assembly; the other end of the adjusting screw rod (303) is provided with a limiting baffle (304), and the adjusting mechanism (3) is provided with a limiting seat (305) matched with the limiting baffle (304) for use.

5. The large format bolt tensile tester of claim 4, wherein: the motor group (302) comprises an adjusting motor (3022) and a bearing seat (3026), the adjusting motor (3022) is mounted above the adjusting frame body (301) through a motor mounting seat (3021), and the bearing seat (3026) penetrates through two ends of the adjusting frame body (301); a small chain wheel (3025) is arranged at the output shaft end of the adjusting motor (3022); a large chain wheel (3023) is arranged on the bearing seat (3026); the big chain wheel (3023) is connected with the small chain wheel (3025) through a chain (3024).

6. The large format bolt tensile tester of claim 4, wherein: the first clamp assembly comprises a clamp group (4) and a load sensor (6); the second clamp assembly comprises a clamp group (4) and an anti-loosening plate (5).

7. The large format bolt tensile tester of claim 6, wherein: the assembling test sample (7) clamped by the first clamp assembly and the second clamp assembly comprises a piece to be tested (701), a stretching gasket (702) and a fastening nut (703); tensile gaskets (702) are respectively installed at two ends of the piece to be tested (701), the tensile gaskets (702) are respectively installed on the inner sides of clamping grooves of the two clamp groups (4), and the ends of the tensile gaskets (702) are locked through fastening nuts (703).

8. The large format bolt tensile tester of claim 1 or 4, wherein: the rear end of the bearing frame (2) is provided with an auxiliary frame (8), the auxiliary frame (8) comprises auxiliary frames (801) which are symmetrically arranged on two sides, the tail ends of the auxiliary frames (801) are connected through tail plates (802) to form a protection area, and the upper plane of the auxiliary frames (801) is provided with a protective cover guide rail (205).

9. The large format bolt tensile tester of claim 1, wherein: the bottom of the tester is provided with a ground fixing device (9).

10. The large format bolt tensile tester of claim 1 or 3, wherein: and a reinforced angle plate (10) is arranged between the adjusting mechanism (3) and the bearing frame (2).