Ball row for testing block pressure

Abstract

The utility model relates to a ball row for test block pressure, which relates to the technical field of experimental equipment, and comprises a rolling assembly and a second driving piece, the rolling assembly comprises a rolling part and a plurality of abutting parts, the abutting parts are arranged in parallel, one abutting part comprises a first contact surface, the first contact surface abuts against the output end of the second driving part, the ends, away from the first contact surface, of the other abutting parts abut against the upper-layer sample part, and the rolling part is located between every two adjacent abutting parts; the rolling piece is in sliding connection with the abutting piece in the first direction. The device has the effect that the stress application uniformity degree in the vertical direction can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of experimental equipment, and in particular to a ball row for test block pressure. Background Art

[0002] The rock direct shear test is carried out in the laboratory or on site. The direct shear test is the most commonly used method to determine the shear strength of rock.

[0003] When conducting a direct shear test, the upper and lower parts of the rock structure surface sample are stacked and placed on a supporting table. The lower part of the sample is fixed by a fixing device, and the upper side wall of the sample is pressed against the driving device to apply horizontal stress to the upper part of the sample. Another driving device is used to press against the upper bottom wall of the sample and apply vertical stress to the upper part of the sample.

[0004] With respect to the above-mentioned related technologies, when horizontal stress is applied to the upper part of the sample, the upper part of the sample will produce relative displacement with respect to the lower part of the sample. In this case, the upper part of the sample will also produce horizontal displacement with respect to the vertical driving member, further causing the vertical driving member to apply uneven force to the upper part of the sample, thereby causing inaccurate test results. Therefore, there is an urgent need for a test device that can improve the uniformity of vertical stress application. Utility Model Content

[0005] In order to improve the uniformity of stress application in the vertical direction, the present application provides a ball row for test block pressure.

[0006] The present application provides a test block pressure ball row, which adopts the following technical solution:

[0007] A ball row for test block pressure, comprising a rolling assembly and a second driving member;

[0008] The rolling assembly includes a rolling member and a plurality of clamping members, wherein the plurality of clamping members are arranged in parallel, wherein one of the clamping members includes a first contact surface, the first contact surface is clamped against the output end of the second driving member, and the ends of the remaining clamping members away from the first contact surface are clamped against the upper sample portion, the rolling member is located between two adjacent clamping members, and the rolling member is slidably connected to the clamping member along a first direction.

[0009] By adopting the above technical scheme, during the direct shear test, the two sample parts are stacked, and the horizontal stress is provided to the upper sample part by the horizontally arranged first driving member, and the vertical stress is provided to the upper sample part by the vertically arranged second driving member. When the upper sample part receives the horizontal stress, the upper sample part will be displaced in the horizontal direction, and the upper sample part will be displaced in the horizontal direction relative to the second driving member, thereby resulting in uneven stress transmission in the vertical direction. To this end, a rolling assembly is arranged, and the rolling assembly includes a rolling member and a plurality of abutting members, one abutting member is abutted against the output end of the second driving member, and the remaining abutting members are abutted against the upper sample part. When the first driving member drives the upper sample part to move in the first direction, the rolling member is driven to slide in the first direction, and the abutting member in contact with the output end of the second driving member is further driven to slide in the first direction. The vertical stress transmission between the plurality of abutting members is realized through the rolling member, thereby improving the uniformity of vertical stress application.

[0010] Optionally, the rolling element includes a fixed frame and a plurality of rollers arranged along a first direction, the plurality of rollers are rotatably connected to the fixed frame, the rotation axis of the rollers along the fixed frame is parallel to a second direction, and the second direction is perpendicular to the first direction.

[0011] By adopting the above technical solution, in order to make the rolling member slide along the abutting member in the first direction, the roller is rotatably connected to the fixed frame, that is, the rolling member can rotate along the abutting member in the first direction, and the abutting member can also rotate along the rolling member in the first direction.

[0012] Optionally, a positioning groove is provided on the first contact surface of the retaining member.

[0013] By adopting the above technical solution, before applying the vertical stress, in order to align the position of the second driving member with the upper sample portion to ensure that the vertical stress is applied more evenly, a positioning groove is provided on the first contact surface where the clamping member is located to correspondingly clamp the positioning groove with the output end of the second driving member.

[0014] Optionally, a telescopic component is further included, and telescopic components are provided at both ends of the clamping member that is pressed against the upper sample part. The telescopic component includes a telescopic plate, and first sliding grooves are opened at both ends of the clamping member along a first direction. The telescopic plate is located in the first sliding groove, and the telescopic plate is slidably connected to the clamping member along the first direction in the first sliding groove.

[0015] By adopting the above technical solution, due to the difference in the size of the upper sample part, the size of the clamping part needs to be adapted to the upper sample part as much as possible to achieve a better effect of vertical stress transmission. To this end, a telescopic component is set up, and telescopic plates are provided at both ends of the clamping part. The telescopic plates slide along the first slide groove of the abutment part along the first direction, so that the telescopic plates can further extend the length of the clamping part in the first direction, thereby allowing the rolling part to slide on the telescopic plate along the first direction to better transmit the vertical stress.

[0016] Optionally, the telescopic assembly also includes a first elastic member, which is located in the first slide groove, one end of the first elastic member is fixedly connected to the bottom wall of the first slide groove, and the other end is fixedly connected to the telescopic plate, and the first elastic member has a force to drive the telescopic plate to move toward the first slide groove under a recoverable deformation.

[0017] By adopting the above technical solution, in order to limit the sliding of the telescopic plate in the first slide groove along the first direction, the telescopic plate and the clamping member are fixed by the first elastic member. Under the action of the first elastic member, a person can pull the telescopic plate to slide along the wall of the first slide groove.

[0018] Optionally, the telescopic assembly also includes a connecting plate, there is a gap between the telescopic plate and the upper sample portion, the connecting plate is located between the telescopic plate and the upper sample portion, the connecting plate is fixedly connected to the telescopic plate, and the bottom wall of the connecting plate is in contact with the top wall of the upper sample portion.

[0019] By adopting the above technical solution, since the height of the telescopic plate is smaller than the height of the abutting member, when the telescopic plate slides out along the wall of the first sliding groove, there is a gap between the telescopic plate and the upper sample portion. When the ball row slides onto the telescopic plate, it will affect the transmission of the vertical stress of the sample portion by the second driving member. For this reason, the bottom wall of the telescopic plate is fixedly connected by the connecting plate so that the connecting plate fits with the top wall of the upper sample portion.

[0020] Optionally, a second slide groove for accommodating the connecting plate is opened along a second direction on one side of the abutting member close to the upper sample portion, the second direction is perpendicular to the first direction, and the second slide groove is connected to the first slide groove.

[0021] By adopting the above technical solution, since the telescopic plate slides along the first slide groove, in order to ensure that the connecting plate is always in contact with the upper sample part, the clamping member is provided with a second slide groove, and the second slide groove is used to accommodate the connecting plate. Therefore, no matter whether the connecting plate is in the first slide groove or not, the bottom wall of the connecting plate can always be in contact with the top wall of the sample part.

[0022] Optionally, a blocking member is provided at one end of the connecting plate away from the clamping member, a third sliding groove is opened in the bottom wall of the connecting plate along the second direction, one end of the blocking member is located in the third sliding groove, and the blocking member is located at one end of the third sliding groove and is fixedly connected to a limiting block, and a accommodating groove is opened in the side wall of the third sliding groove perpendicular to the second direction, the limiting block is located in the accommodating groove, and the limiting block is slidably connected to the connecting plate in the accommodating groove along the second direction, and the bottom wall of the accommodating groove is used to prevent the limiting block from sliding out of the third sliding groove.

[0023] By adopting the above technical solution, when the telescopic plate slides out of the first slide groove, the position of the telescopic plate cannot be fixed due to the certain force of the first elastic member. To this end, a blocking member is provided on the bottom wall of the connecting plate. When the telescopic plate slides along the wall of the first slide groove to a side away from the sample portion in the first direction, the blocking member loses the blocking of the sample portion. Under the action of gravity, the blocking member slides out to the outside along the third slide groove, and the blocking member abuts against the side wall of the sample portion, thereby fixing the fastening member to the upper sample portion.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. In the present application, when the first driving member generates horizontal stress on the upper sample portion, thereby causing the upper sample portion to be displaced in the horizontal direction, the second driving member is configured to uniformly transmit the vertical stress on the upper sample portion by setting a rolling member and a pressing member;

[0026] 2. The present application provides a telescopic assembly, and the telescopic plate extends the length of the abutting member, so that the telescopic plate can adapt to specimens of different sizes, thereby further improving the transmission of vertical stress.

[0027] 3. The present application provides a blocking member, which can be used to fix the abutting member and the upper sample portion, thereby preventing the abutting member from moving on the upper sample portion and affecting the transmission of vertical stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the test block pressure device of the present application;

[0029] Figure 2 It is a schematic diagram of the structure of the ball row used for the test block pressure of this application;

[0030] Figure 3 It is a schematic diagram of the structure of the rolling assembly of the present application;

[0031] Figure 4 It is a schematic diagram of the structure of the telescopic assembly of the present application;

[0032] Figure 5 is a cross-sectional view of the telescopic assembly of the present application;

[0033] Figure 6 It is a structural schematic diagram of the connecting plate and the telescopic plate of the present application;

[0034] Figure 7 It is an exploded view of the blocking member and the connecting plate of the present application.

[0035] Explanation of the accompanying drawings: 01, sample part; 02, first driving member; 03, second driving member; 1, rolling assembly; 11, tightening member; 111, first contact surface; 112, positioning groove; 113, first slide groove; 114, second slide groove; 12, rolling member; 121, fixing frame; 122, roller; 2, telescopic assembly; 21, telescopic plate; 211, blocking member; 2111, limiting block; 212, third slide groove; 2122, receiving groove; 213, second receiving groove; 214, gap; 22, first elastic member; 23, connecting plate. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-7 This application is described in further detail.

[0037] Reference Figure 1 The two sample parts 01 are stacked in the vertical direction. During the direct shear test, the horizontal stress is applied to the sample part 01 located on the upper layer by the output end of the first driving member 02 in the horizontal direction, and the vertical stress is applied to the sample part 01 located on the upper layer by the output end of the second driving member 03 in the vertical direction.

[0038] The present application embodiment discloses a ball row for test block pressure. Figure 2 The ball row for test block pressure includes a rolling assembly 1, and the rolling assembly 1 is located between the upper sample part 01 and the second driving member 03. When the second driving member 03 applies a force to the upper sample part 01, the stress applied by the rolling assembly 1 to the upper sample part 01 is more uniform.

[0039] Reference Figure 2 and Figure 3When the first driving member 02 applies horizontal stress to the upper sample portion 01, the upper sample portion 01 will be displaced in the horizontal direction accordingly, and the upper sample portion 01 will also be displaced relative to the second driving member 03 accordingly, thereby affecting the uniformity of the vertical stress applied by the second driving member 03 to the upper sample portion 01. For this reason, The rolling assembly 1 includes a rolling member 12 and a plurality of abutting members 11, and the rolling member 12 and the abutting members 11 are both horizontally arranged. In the present embodiment, two abutting members 11 are provided, and the rolling member 12 is located between the two abutting members 11, wherein one of the abutting members 11 includes a first contact surface 111, and the first contact surface 111 abuts against the output end of the second driving member 03, and the other abutting member 11 is in abutment with the top wall of the upper sample portion 01 at one end away from the first contact surface 111, and the rolling member 12 is slidably connected to the abutting member 11 along a first direction. When the first driving member 02 drives the upper sample to slide along the first direction, the abutting member 11 abutted against the upper sample portion 01 will also slide along the first direction, driving the rolling member 12 to slide along the first direction, and further driving the abutting member 11 in contact with the first contact surface 111 to slide along the first direction, thereby realizing the transmission of stress applied between the two abutting members 11, so as to ensure that the vertical stress transmitted to the upper sample portion 01 by the first driving member 02 through the abutting member 11 is relatively uniform.

[0040] Reference Figure 3 In some embodiments, the rolling member 12 can be a roller or a ball bearing. As long as the structure can achieve rolling, it is within the protection scope of the present application. In this embodiment, the rolling member 12 includes a fixed frame 121 and a plurality of rollers 122 arranged at intervals along a first direction. The rollers 122 are located in the fixed frame 121. The plurality of rollers 122 are arranged in parallel. Each roller 122 is rotatably connected to the fixed frame 121. The rollers 122 are parallel to the second direction along the rotation axis of the fixed frame 121. The second direction is perpendicular to the first direction. Both sides of the rollers 122 are in contact with the sides close to the two abutting members 11 respectively.

[0041] Reference Figure 2 and Figure 3 In order to align the second driving member 03 with the upper sample portion 01 to ensure that the vertical stress is applied more evenly, a positioning groove 112 is provided on the first contact surface 111 of the clamping member 11. In some embodiments, the shape of the positioning groove 112 is determined according to the position of the output end of the second driving member 03. In this embodiment, the positioning groove 112 is an annular groove so that the positioning groove 112 corresponds to the output end of the second driving member 03.

[0042] Reference Figure 4 and Figure 5, due to the difference in size of the sample part 01, in order to make the second driving member 03 transmit the vertical stress more evenly through the clamping member 11, for this purpose, the test block pressure ball row also includes a telescopic component 2, and a telescopic component 2 is provided at each end of the clamping member 11 in contact with the upper sample part 01, and the telescopic component 2 includes a telescopic plate 21 and a first elastic member 22. A first slide groove 113 is opened on the side wall of the clamping member 11 along the first direction, and the telescopic plate 21 is located in the first slide groove 113. The telescopic plate 21 is slidably connected to the clamping member 11 along the side wall of the first slide groove 113. The telescopic plate 21 is fixedly connected to the clamping member 11 through the first elastic member 22. One end of the first elastic member 22 is fixedly connected to the telescopic plate 21, and the other end is fixedly connected to the bottom wall of the first slide groove 113. The telescopic direction of the first elastic member 22 is parallel to the first direction. In this embodiment, the first elastic member 22 is a tension spring. The first elastic member 22 has a force to drive the telescopic plate 21 to move toward one side of the first slide groove 113 under recoverable deformation.

[0043] Reference Figure 5 and Figure 6 Since the telescopic plate 21 is in the first slide groove 113, the height of the telescopic plate 21 is less than the height of the abutting member 11. When one end of the telescopic plate 21 slides out of the first slide groove 113 along the first direction, there is a gap 214 between the bottom wall of the telescopic plate 21 and the top wall of the upper sample portion 01, that is, the telescopic plate 21 and the upper sample portion 01 cannot fit tightly together, thereby affecting the transmission of vertical stress. For this reason, the telescopic assembly 2 also includes a connecting plate 23, which is located between the telescopic plate 21 and the upper sample portion 01, and the abutting member is close to the upper sample portion 01. A second slide groove 114 is provided through the second direction, and the second direction is perpendicular to the first direction. The second slide groove 114 is connected to the first slide groove 113. The connecting plate 23 is fixedly connected to a side of the telescopic plate 21 close to the top wall of the upper sample part 01. A plate surface of the connecting plate 23 away from the telescopic plate 21 is in contact with the top wall of the upper sample part 01, that is, no matter whether the telescopic plate 21 is located in the first slide groove 113 or not, the connecting plate 23 can be in contact with the top wall of the upper sample part 01, so as to better transmit the vertical stress to the upper sample part 01 through the fastening member 11 and the telescopic plate 21.

[0044] Reference Figure 6 and Figure 7The personnel slides the telescopic plate 21 out of the first sliding groove 113 along the first direction. Under the action of the first elastic member 22, the telescopic plate 21 tends to move into the first sliding groove 113. For this reason, a blocking member 211 is provided on the side of the connecting plate 23 away from the first elastic member 22, and a third sliding groove 212 is opened on the bottom wall of the connecting plate 23 along the second direction. The blocking member 211 is located in the third sliding groove 212, and the blocking member 211 is slidably connected to the connecting plate 23 in the third sliding groove 212 along the second direction. In some embodiments, the blocking member 211 can be connected to the connecting plate 23 by an elastic member, or the blocking member 211 can be connected to the connecting plate 23 by the direction of the limit block 2111 and the limit groove. The schemes extended on the basis of the present application are all within the protection scope of the present application. As a preference, in the present embodiment, a receiving groove 2122 is opened on the side wall of the third sliding groove 212 perpendicular to the second direction, The stopper 211 is located at one end of the third slide groove 212 and is fixedly connected to the limit block 2111. The limit block 2111 is located in the accommodating groove 2122. The limit block 2111 is slidably connected to the connecting plate 23 along the second direction in the accommodating groove 2122. The groove bottom wall of the accommodating groove 2122 blocks the limit block 2111 from sliding out of the third slide groove 212. When the telescopic plate 21 slides out along the groove wall of the first slide groove 113, when the telescopic plate 21 slides away from the end of the abutting member 11 to slide away from the upper sample part 01, the stopper 211 loses the support of the upper sample part 01, and the stopper 211 itself has a certain weight. Under the action of gravity, the stopper 211 slides out along the groove wall of the third slide groove 212, and the stopper 211 further fits with the side wall of the upper sample part 01, so that the abutting member 11 and the upper sample part 01 are fixed by the blocking portion to prevent the abutting member 11 from moving on the upper sample part 01.

[0045] Referring to the figure, when the pressing member 11 is of comparable size to the upper sample portion 01, the blocking portion is supported by the upper sample portion 01, and one end of the blocking portion is in contact with the upper sample portion 01. When the upper sample portion 01 is larger, the telescopic plate 21 is slid from the first slide groove 113 to the side away from the upper sample portion 01, and the blocking member 211 falls under the action of gravity, so that the blocking member 211 fixes the position of the pressing member 11 on the upper sample portion 01.

[0046] The implementation principle of the ball row for test block pressure in the embodiment of the present application is as follows: after the test sample part 01 is in place, one of the abutting members 11 is abutted against the upper test sample part 01, and the other abutting member 11 is abutted against the output end of the second driving member 03, and a rolling member 12 is arranged between the two abutting members 11. When the first driving member 02 drives the upper test sample part 01 to displace along the first direction, the rolling member 12 is driven to slide along the first direction, and further drives the abutting member in contact with the second driving member 03 to displace slightly along the first direction, so that the force transmission between the abutting member and the upper test sample part 01 is realized through the rolling member 12, thereby ensuring the uniform transmission of vertical stress;

[0047] When the size of the abutment and the upper sample portion 01 differs, the telescopic plate 21 is slid along the first direction toward the side away from each other until one end of the telescopic plate 21 exceeds the upper sample portion 01 in the second direction, and one end of the blocking member 211 slides out of the third slide groove 212 under the action of gravity to fit with the upper sample portion 01, so that the abutment is fixed by the blocking member 211 to prevent the blocking member 211 from moving. When the telescopic plate 21 slides out of the first slide groove 113, the bottom wall of the connecting plate 23 fits with the top wall of the upper sample portion 01 to avoid a gap 214 between the telescopic plate 21 and the upper sample portion 01, further ensuring that the vertical stress can be transmitted to the upper sample portion 01.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A ball row for test block pressure, characterized in that: It comprises a rolling assembly (1) and a second driving member (03); The rolling assembly (1) comprises a rolling member (12) and a plurality of pressing members (11), wherein the plurality of pressing members (11) are arranged in parallel, wherein one of the pressing members (11) comprises a first contact surface (111), wherein the first contact surface (111) is pressed against the output end of the second driving member (03), and the ends of the remaining pressing members (11) away from the first contact surface (111) are pressed against the upper sample portion (01), and the rolling member (12) is located between two adjacent pressing members (11), and the rolling member (12) is slidably connected to the pressing member (11) along a first direction.

2. A ball row for test block pressure according to claim 1, characterized in that: The rolling element (12) comprises a fixed frame (121) and a plurality of rollers (122) arranged along a first direction, wherein the plurality of rollers (122) are rotatably connected to the fixed frame (121), and the rollers (122) are parallel to a second direction along a rotation axis of the fixed frame (121), and the second direction is perpendicular to the first direction.

3. The ball row for test block pressure according to claim 1, characterized in that: A positioning groove (112) is provided on the first contact surface (111) of the abutting member (11).

4. A ball row for test block pressure according to any one of claims 1 to 3, characterized in that: It also includes a telescopic component (2), and both ends of the pressing member (11) pressed against the upper sample portion (01) are provided with a telescopic component (2), and the telescopic component (2) includes a telescopic plate (21), and both ends of the pressing member (11) are provided with a first sliding groove (113) along a first direction, and the telescopic plate (21) is located in the first sliding groove (113), and the telescopic plate (21) is slidably connected to the pressing member (11) along the first direction in the first sliding groove (113).

5. A ball row for test block pressure according to claim 4, characterized in that: The telescopic assembly (2) further comprises a first elastic member (22), wherein the first elastic member (22) is located in the first slide groove (113), one end of the first elastic member (22) is fixedly connected to the bottom wall of the first slide groove (113), and the other end is fixedly connected to the telescopic plate (21), and the first elastic member (22) has a force to drive the telescopic plate (21) to move toward the first slide groove (113) under a recoverable deformation.

6. A ball row for test block pressure according to claim 4, characterized in that: The telescopic assembly (2) further comprises a connecting plate (23), a gap (214) exists between the telescopic plate (21) and the upper sample portion (01), the connecting plate (23) is located between the telescopic plate (21) and the upper sample portion (01), the connecting plate (23) is fixedly connected to the telescopic plate (21), and the bottom wall of the connecting plate (23) is in contact with the top wall of the upper sample portion (01).

7. A ball row for test block pressure according to claim 6, characterized in that: A second slide groove (114) for accommodating the connecting plate (23) is provided on one side of the abutting member (11) close to the upper sample portion (01) along a second direction, wherein the second direction is perpendicular to the first direction, and the second slide groove (114) is connected to the first slide groove (113).

8. The ball row for test block pressure according to claim 6, characterized in that: A blocking member (211) is provided at one end of the connecting plate (23) away from the pressing member (11); a third sliding groove (212) is provided on the bottom wall of the connecting plate (23) along the second direction; one end of the blocking member (211) is located in the third sliding groove (212); one end of the blocking member (211) located in the third sliding groove (212) is fixedly connected to a limiting block (2111); a groove side wall of the third sliding groove (212) is provided with a receiving groove (2122) perpendicular to the second direction; the limiting block (2111) is located in the receiving groove (2122); the limiting block (2111) is slidably connected to the connecting plate (23) in the receiving groove (2122) along the second direction; the groove bottom wall of the receiving groove (2122) is used to block the limiting block (2111) from sliding out of the third sliding groove (212).

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