CN214703062U

CN214703062U - Clamp of mechanical testing machine and mechanical testing machine

Info

Publication number: CN214703062U
Application number: CN202121169336.2U
Authority: CN
Inventors: 何磊; 王志强
Original assignee: Nanjing Forestry University
Current assignee: Nanjing Forestry University
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2021-11-12
Anticipated expiration: 2031-05-27

Abstract

The utility model discloses an anchor clamps and mechanical testing machine of mechanical testing machine belongs to testing arrangement technical field. The utility model discloses an anchor clamps of mechanical testing machine are including adjusting base and two grip blocks, adjust the base and pass through the movably installation of regulating part on mechanical testing machine, and it is provided with the spread groove to adjust the base up end, and the terminal surface is provided with the connecting piece under the grip block, and the connecting piece is installed in the spread groove, and the grip block can be followed spread groove length direction and removed, forms the double-layered mouth of centre gripping test beam between two grip blocks. The utility model discloses an anchor clamps can form the side direction support to the test roof beam to the mouth size that presss from both sides that the grip block formed can be adjusted, is applicable to the test roof beam of various sizes, when playing the location effect to the test roof beam, can not cause the degree of accuracy reduction of test result because of the side direction application of force is too big. The utility model discloses a mechanical testing machine can adjust the mounted position of anchor clamps and supporting component on the base, applicable in the test beam of different length.

Description

Clamp of mechanical testing machine and mechanical testing machine

Technical Field

The utility model relates to a testing arrangement technical field, more specifically say, relate to an anchor clamps and mechanical testing machine of mechanical testing machine.

Background

The mechanical property of the wood beam often determines the quality of the wood beam, and a mechanical testing machine is needed when the wood beam is subjected to bending testing. When the wood beam is placed on the mechanical testing machine, the cross section of the wood beam perpendicular to the length direction is taken, and if the height-width ratio of the cross section is large, the wood beam is more prone to lateral displacement and even lateral toppling when the bending test is carried out. The mechanical testing machine in the prior art has insufficient lateral support when the wood beam is placed, and can not overcome the problem of lateral movement of the wood beam when the numerical value of the height-width ratio of the cross section of the wood beam is large, so that the accuracy of the test can be seriously influenced.

The utility model discloses an anchor clamps can adjust according to the difference of wooden beam test piece specification, and the commonality is higher, and the side direction when can guaranteeing the big wooden beam bending test of arbitrary cross-section aspect ratio is stable.

Through retrieval, an electronic universal testing machine (application number: 201720164246.1, application date: 2018, 1 month and 30 days) is disclosed in the prior art, and belongs to the technical field of electronic universal testing machines. The utility model discloses an electron universal tester includes base, entablature and lead screw, the lead screw both ends respectively with the entablature and the base is connected, the lead screw runs through the entablature, so that it rotates the drive of lead screw accessible entablature removes, lead screw one end is equipped with controlling means, controlling means is steerable the lead screw rotates the number of turns in order to control entablature displacement. The electronic universal testing machine of the application can display the displacement of the movable beam in real time, and is more convenient and simpler to operate.

The electronic universal testing machine of the application controls the movement of the movable beam through the control device, displays the movement data of the movable beam through the display device, overcomes the technical problem that the electronic universal testing machine cannot display the moving position of the movable beam in real time in the prior art, and has the beneficial effects of convenience in operation and accuracy in control. However, the lateral support of the wood beam is not realized in the application, and when the wood beam with a large value of the aspect ratio of the section is tested, the test effect may be affected due to the lateral movement of the wood beam.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The utility model aims to overcome the not good not enough of location effect when mechanical testing machine among the prior art is to the crooked test of wooden beam, provide a mechanical testing machine's anchor clamps, two grip blocks that it includes can form the side direction support to the test roof beam, and the mouth size that presss from both sides that the grip block formed can be adjusted, when playing the location effect to the test roof beam, can not cause the degree of accuracy reduction of test result because of the side direction application of force is too big.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses a clamp of a mechanical testing machine, which is used for clamping a testing beam; including adjusting base and two at least grip blocks, adjust the base and pass through the movably installation of regulating part on the base of mechanical testing machine, adjust the base up end and be provided with the spread groove, the terminal surface is provided with the connecting piece under the grip block, the connecting piece is installed in the spread groove, the grip block can be followed the shift of spread groove length direction, is located to form the double-layered mouth of centre gripping test beam between two grip blocks of corresponding position.

Further, the connecting groove comprises a first groove neck and a first groove bottom, the width of the first groove bottom is larger than that of the first groove neck, and the connecting piece comprises a connecting plate and a connecting block; when the clamping plate and the connecting groove are in a matched state, the connecting plate is located in the first groove neck, and the connecting block is located in the first groove bottom.

Further, the adjusting piece is a first adjusting bolt, the first adjusting bolt comprises a first column body and a first column head, the first column head is matched with the base in a positioning mode, and the first column body is in threaded connection with the adjusting base.

Further, the first adjusting bolt is provided with at least two.

The utility model discloses a mechanical testing machine, which comprises a base, a loading mechanism, at least two supporting parts and a clamp of the mechanical testing machine; the supporting component is arranged on the base and used for supporting the test beam, and an installation groove matched with the first adjusting bolt is formed in the upper end face of the base; the loading mechanism is located above the test beam and used for loading test force on the test beam.

Further, the mounting grooves are at least provided with two.

Further, the supporting component comprises a supporting plate and a supporting seat, the upper end of the supporting plate is used for placing the test beam, the supporting seat is movably connected with the mounting groove through a second adjusting bolt, the mounting groove comprises a second groove neck and a second groove bottom, and the second adjusting bolt comprises a second column body and a second column head; when the supporting seat and the mounting groove are in a matched state, the second column head is located in the bottom of the second groove, one end of the second column body is located in the second groove neck, and the other end of the second column body is in threaded connection with the supporting seat.

Further, the mechanical testing machine's anchor clamps are provided with two, the support component sets up to two, anchor clamps are located between two support components.

Furthermore, when the test beam is placed on the supporting part, the upper end face of the clamping plate is higher than the upper end face of the test beam.

Further, in the first direction, the length of the base is not less than that of the adjusting base, and the length of the base is not less than that of the supporting seat.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

(1) the utility model discloses an anchor clamps of mechanical testing machine are including adjusting base and two grip blocks, adjust the base and pass through the movably installation of regulating part on mechanical testing machine, and it is provided with the spread groove to adjust the base up end, and the terminal surface is provided with the connecting piece under the grip block, and the connecting piece is installed in the spread groove, and the grip block can be followed spread groove length direction and removed, forms the double-layered mouth of centre gripping test beam between two grip blocks. The utility model discloses an anchor clamps can form the side direction support to the test roof beam to the double-layered mouth size that the grip block formed can be adjusted, is applicable to the test roof beam of various sizes. The position of two grip blocks on adjusting the base is adjusted according to the size of test roof beam to anchor clamps, need not other mechanical fastening when experimental, when playing the location effect to the test roof beam, can not cause the degree of accuracy reduction of test result because of the side direction application of force is too big.

(2) The utility model discloses a mechanical testing machine, including base, loading mechanism, two at least supporting component and anchor clamps, the supporting component is installed on the base to be used for supporting the test roof beam, the mounting groove sets up the up end at the base, and loading mechanism is located test roof beam top, is used for exerting the testing force downwards to the test roof beam. The utility model discloses a mechanical testing machine can adjust the mounted position of anchor clamps and supporting component on the base, applicable in the test beam of different length.

Drawings

FIG. 1 is a schematic view of a local structure of a mechanical testing machine;

FIG. 2 is a schematic view of the structure of the clamp;

FIG. 3 is a schematic diagram of a clamping plate structure;

FIG. 4 is a schematic view of an adjustment base structure;

FIG. 5 is a schematic view of the clamping plate and adjustment base in cooperation;

fig. 6 is a schematic structural diagram of the mechanical testing machine.

The reference numerals in the schematic drawings illustrate:

1. adjusting the base; 10. connecting grooves; 100. a first channel neck; 101. a first tank bottom; 11. a first adjusting bolt; 2. a clamping plate; 20. a connecting member; 200. a connecting plate; 201. connecting blocks; 3. a base; 30. mounting grooves; 300. a second channel neck; 301. the bottom of the second groove; 4. a loading mechanism; 40. a loading head; 5. a support member; 50. a support plate; 51, supporting a seat; 52. a second adjusting bolt; 6. the beam is tested.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

The structure, proportion, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used for limiting the limit conditions of the present invention, so that the present invention has no technical essence, and any structural modification, proportion relation change or size adjustment should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.

Example 1

When the mechanical testing machine is used for carrying out bending-resistant type tests on the wood beam, the wood beam is placed on the supporting part of the testing machine, and when the height of the wood beam is obviously larger than the width of the wood beam, the wood beam is displaced, shaken or even toppled under the bending action force applied to the wood beam, so that a fixing tool for the wood beam needs to be arranged on the mechanical testing machine, and meanwhile, the use of the fixing tool cannot influence the test result due to the application of lateral force.

As shown in fig. 1 to 4, the fixture of the mechanical testing machine of the present embodiment is used for clamping a testing beam 6, the testing beam 6 is generally a wooden beam, the fixture includes an adjusting base 1 and at least two clamping plates 2, and the adjusting base 1 is movably mounted on the mechanical testing machine through an adjusting member. The adjusting base 1 can adjust the position of the mechanical testing machine according to the length of the testing beam 6, so that the clamping position of the testing beam 6 is changed, and the clamp is suitable for testing beams 6 with various lengths.

Adjust base 1 up end and be provided with connecting groove 10, connecting groove 10 is seted up along adjusting base 1 length direction, can set up connecting groove 10 and run through the both sides terminal surface of adjusting base 1 in length direction, also can only set up as the tip of connecting groove 10 from one side terminal surface of adjusting base 1. The terminal surface is provided with connecting piece 20 under two grip blocks 2, and connecting piece 20 is installed in spread groove 10, through the installation of connecting piece 20 in spread groove 10, satisfies grip block 2 and can follow spread groove 10 length direction and remove when playing the positioning action to grip block 2, is in and forms the double-layered mouth of centre gripping test beam 6 between two grip blocks 2 of corresponding position. This embodiment also can adopt to set up the spread groove on grip block 2 and set up the mode of connecting piece on adjusting base 1, can satisfy the grip block with adjust base 1 can follow the effect of spread groove length direction relative movement can.

The present embodiment further optimizes the shapes of the coupling groove 10 and the coupling piece 20, and the fitting relationship between the coupling groove 10 and the coupling piece 20 is more stable. Specifically, the connecting groove 10 includes a first groove neck 100 and a first groove bottom 101, the connecting groove 10 is opened downwards on the upper end surface of the adjusting base 1, the first groove neck 100 is a section of the connecting groove 10 close to the upper end surface of the adjusting base 1, and the first groove bottom 101 is a section of the connecting groove 10 away from the upper end surface of the adjusting base 1. The structure of the connecting member 20 is matched with the connecting groove 10, that is, the connecting member 20 comprises a connecting plate 200 and a connecting block 201, the connecting plate 200 is located in the first groove neck 100, the connecting block 201 is located in the first groove bottom 101, and when the clamping plate 2 is installed, the connecting member 20 can enter from one end of the adjusting base 1 in the length direction of the connecting groove 10. The width of the first groove bottom 101 of the present embodiment is greater than the width of the first groove neck 100, which is the width of the connecting groove 10 in the horizontal direction in the cross section of the connecting groove 10 perpendicular to the length direction, thereby increasing the support of the connecting block 201 at the lower end of the connecting member 20 to the clamping plate 2. And the connection plate 200 cooperates with the first groove neck 100 to realize the adjustment movement of the clamping plate 2 on the adjustment base 1.

When the clamp of the embodiment is used, after the positions of the two clamping plates 2 on the adjusting base 1 are adjusted according to the size of the test beam 6, the mechanical property test can be performed without mechanical fixation in other forms, firstly, because the two clamping plates 2 have a certain weight, and a plurality of surface contacts between the first groove bottom 101 and the connecting block 201 form friction, and the first groove neck 100 and the connecting plate 200 are also stably matched, the two clamping plates 2 are stably arranged on two sides of the test beam 6 without displacement, and lateral force cannot be applied to the test beam 6 in the bending property test of the test beam 6, so that the test beam 6 in the test process can not incline or slide due to the fixation of the two clamping plates 2 on the test beam 6. If the two clamping plates 2 are completely fixed by other fixing parts, the two clamping plates 2 may generate excessive clamping force on the test beam 6 in the lateral direction of the test beam 6, namely in the width direction of the test beam 6, so that the test effect is disturbed, and the result of the bending performance test is finally influenced. Secondly, the bending test of the test beam 6 can be carried out for a plurality of times, and under the condition that the clamping plate 2 is enough to clamp the test beam 6, other fixed parts are not arranged, so that the position of the clamping plate 2 on the adjusting base 1 can be conveniently and rapidly adjusted in repeated tests.

The position of the clamp of the embodiment on the mechanical testing machine can be adjusted. Specifically, the adjusting base 1 of the clamp is movably mounted on the mechanical testing machine through an adjusting piece. The adjusting part is a first adjusting bolt 11, the first adjusting bolt 11 comprises a first column body and a first column head, the first column body is a rod part of the first adjusting bolt 11, the first column head is a head part connected with one end of the rod part in the first adjusting bolt 11, the first column head is matched with the base 3 in a positioning mode, and the first column body is in threaded connection with the adjusting base 1. The first adjusting bolt 11 of this embodiment can use a bolt of a hexagon socket head cap, etc., as long as the first column is in threaded connection with the adjusting base 1, and the first column cap has a positioning effect. At least two first adjusting bolts 11 are arranged for reinforcing the installation of the adjusting base 1 on the mechanical testing machine.

Example 2

The mechanical testing machine provided by the embodiment utilizes the clamp to realize lateral fixation of the test beam 6 during the complete performance test, and optimizes the installation of the clamp on the mechanical testing machine.

As shown in fig. 5 and 6, the mechanical testing machine of the present embodiment includes a base 3, a loading mechanism 4, at least two support members 5, and a jig. The base 3 is the support mesa of testing machine, can satisfy the installation of multiple part on the testing machine. The loading mechanism 4 is a mechanism for loading and applying force during a mechanical test, and the loading mechanism 4 loads a test force on the test beam 6 during a bending test of the test beam 6, so that the loading mechanism 4 is positioned above the test beam 6, and two or more loading mechanisms 4 can be arranged according to test requirements. The support member 5 is mounted on the base 3 and serves to support the test beam 6. The number of the supporting members 5 in this embodiment is at least two, and when two supporting members 5 are provided, the two supporting members 5 are located at the positions of both ends of the test beam 6, so that the loading mechanism 4 is located between the two supporting members 5 in the length direction of the test beam 6.

The upper end surface of the base 3 is provided with a mounting groove 30 which is matched with the first adjusting bolt 11, and the mounting groove 30 extends along the length direction of the upper end surface of the base 3 and can be used for mounting the supporting part 5 and the clamp. In order to increase the stability of the fitting of the mounting groove 30, the mounting groove 30 of the present embodiment is provided with at least two mounting grooves 30, and the plurality of mounting grooves 30 are parallel to each other and arranged along the width direction of the upper end surface of the base 3.

The mounting of the support member 5 on the base 3 in this embodiment is similar to the mounting of the clamp on the base 3. The support member 5 includes a support plate 50 and a support seat 51, the upper end of the support plate 50 is used for placing the test beam 6, and the support seat 51 is used for connecting the base 3. The supporting seat 51 is movably connected to the mounting groove 30 by a second adjusting bolt 52, and the second adjusting bolt 52 may be a hexagon socket head cap screw similar to the first adjusting bolt 11.

The mounting groove 30 of the present embodiment may refer to the structural shape of the connecting groove 10, that is, the mounting groove 30 penetrates both end surfaces of the base 3 in the longitudinal direction, or may be opened as an end portion of the mounting groove 30 from only one end surface of the base 3, and the mounting groove 30 may have a groove bottom and a groove neck. The mounting groove 30 includes a second groove neck 300 and a second groove bottom 301, and the second adjusting bolt 52 includes a second cylinder and a second cylinder head. When the supporting seat 51 and the mounting groove 30 are in a matched state, the second column is positioned at the bottom 301 of the second groove, one end of the second column is positioned in the second groove neck 300, and the other end of the second column is in threaded connection with the supporting seat 51. When the support member 5 is mounted, the second adjusting bolt 52 is first mounted on the support base 51, and the position of the second column head in the height direction is adjusted by screw-fitting so as to be able to fit with the second groove bottom 301. If the threaded hole on the supporting seat 51 is a through hole, the bolt can be fixed at the tail of the cylinder by using a nut after the adjustment is completed, the adjusting bolt is installed into the installation groove 30 through one end of the installation groove 30 in the lateral direction, and finally the nut at the tail of the cylinder is screwed to realize the positioning. The mounting of the adjustment base 1 on the base 3 can be referred to the mounting of the support base 51 on the base 3.

It should be noted that, unlike the connection between the connecting groove 10 and the connecting member 20, the height of the stud can be adjusted by the adjusting bolt through the screw-thread fit on the adjusting base 1 and the supporting seat 51 when the mounting groove 30 and the adjusting bolt are connected. The stud of the adjusting bolt can thus be locked by rotation when it is fixed. In this embodiment, the end of the mounting groove 30 may be disposed at the middle position of the base 3, that is, the mounting groove 30 does not penetrate through the base 3, and both ends of the mounting groove 30 in the length direction may be selectively opened according to actual requirements, and at this time, the mounting groove 30 is not provided with a groove neck and a groove bottom structure, but the mounting groove 30 penetrates through the base 3 in the height direction. During installation, the adjusting base 1 is placed on the base 3, the threaded hole corresponds to the position of the mounting groove 30, then the first adjusting bolt 11 upwards penetrates through the notch of the mounting groove 30 from the bottom of the mounting groove 30 and enters the threaded hole of the adjusting base 1, and then the first column head is tightly pressed with the bottom surface of the base 3 by rotating the first adjusting bolt 11, so that positioning fit is achieved. The second adjusting bolt 52 of the support seat 51 can be connected with reference to the first adjusting bolt 11.

Under the condition that the length of the test beam 6 is longer, the number of the clamps can be increased, the number of the clamps on the mechanical testing machine is two, the number of the supporting parts 5 is two, and the clamps are also arranged between the two supporting parts 5 because the loading mechanism 4 is positioned between the two supporting parts 5 and the force applied to the test beam 6 by the loading mechanism 4 is the reason for causing the test beam 6 to possibly displace.

When placing test beam 6 on supporting

component

5, 2 up end of grip block of anchor clamps are higher than the up end of test beam 6 to increase grip block 2 and to the area of contact of test beam 6, increase fixed effect, when mechanical testing machine tested, can allow experimental test beam 6 highly to have the maximum value, consequently when selecting to be in the high maximum value of test beam 6, it can to make 2 up end of grip block be higher than the up end of test beam 6.

The base 3 is provided with the adjusting base 1 and the supporting seat 51, and in order to increase the installation stability, the length of the base 3 is not less than the length of the adjusting base 1 and the length of the base 3 is not less than the length of the supporting seat 51 in the first direction. The first direction is a length direction of the coupling groove 10 of the adjustment base 1.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. A clamp of a mechanical testing machine is used for clamping a testing beam (6); the method is characterized in that: including adjusting base (1) and two at least grip blocks (2), adjust base (1) and install on base (3) of mechanical testing machine through the regulating part is movably, adjust base (1) up end and be provided with spread groove (10), the terminal surface is provided with connecting piece (20) under grip block (2), install connecting piece (20) in spread groove (10), grip block (2) can be followed spread groove (10) length direction and removed, are in the double-layered mouth that forms centre gripping test beam (6) between two grip blocks (2) that correspond the position.

2. The jig of a mechanical testing machine according to claim 1, characterized in that: the connecting groove (10) comprises a first groove neck (100) and a first groove bottom (101), the width of the first groove bottom (101) is larger than that of the first groove neck (100), and the connecting piece (20) comprises a connecting plate (200) and a connecting piece (201); the clamping plate (2) and the connecting groove (10) are in a matching state, the connecting plate (200) is located in the first groove neck (100), and the connecting block (201) is located in the first groove bottom (101).

3. The jig of a mechanical testing machine according to claim 2, characterized in that: the adjusting piece is a first adjusting bolt (11), the first adjusting bolt (11) comprises a first column body and a first column head, the first column head is matched with the base (3) in a positioning mode, and the first column body is in threaded connection with the adjusting base (1).

4. The jig of a mechanical testing machine according to claim 3, characterized in that: the number of the first adjusting bolts (11) is at least two.

5. A mechanical testing machine is characterized in that: -a grip comprising a base (3), a loading mechanism (4) and at least two support parts (5), and a mechanical testing machine according to any one of claims 1 to 4; the supporting part (5) is arranged on the base (3) and used for supporting the test beam (6), and an installation groove (30) matched with the first adjusting bolt (11) is formed in the upper end face of the base (3); and the loading mechanism (4) is positioned above the test beam (6) and is used for loading test force on the test beam (6).

6. A mechanical testing machine according to claim 5, characterized in that: at least two mounting grooves (30) are arranged.

7. A mechanical testing machine according to claim 6, characterized in that: the supporting part (5) comprises a supporting plate (50) and a supporting seat (51), the upper end of the supporting plate (50) is used for placing the test beam (6), the supporting seat (51) is movably connected with the mounting groove (30) through a second adjusting bolt (52), the mounting groove (30) comprises a second groove neck (300) and a second groove bottom (301), and the second adjusting bolt (52) comprises a second column body and a second column head; supporting seat (51) with when mounting groove (30) are in the mating state, the second cylinder is located in second tank bottom (301), second cylinder one end is located second groove neck (300), the second cylinder other end and supporting seat (51) threaded connection.

8. A mechanical testing machine according to claim 7, characterized in that: the mechanical testing machine is characterized in that two clamps are arranged, the two supporting parts (5) are arranged, and the clamps are located between the two supporting parts (5).

9. A mechanical testing machine according to claim 8, characterized in that: when the test beam (6) is placed on the supporting part (5), the upper end face of the clamping plate (2) is higher than the upper end face of the test beam (6).

10. A mechanical testing machine according to claim 9, characterized in that: in the first direction, the length of the base (3) is not less than that of the adjusting base (1), and the length of the base (3) is not less than that of the supporting seat (51).