Pushing device for geomechanical test

Abstract

The utility model relates to the technical field of geomechanical testing, and provides a pushing device for geomechanical testing, which comprises a supporting assembly, a pushing assembly and a pushing piece. The pushing assembly comprises a mounting part and a pushing part, the mounting part is arranged on the supporting assembly, the pushing part comprises a pushing chain assembly, a conveying chain assembly and a driving part, the pushing chain assembly is arranged on the mounting part and is in transmission connection with the mounting part, and the conveying chain assembly is arranged between the mounting part and the supporting assembly and is in transmission connection with the pushing chain assembly; the driving part is used for driving the conveying chain assembly to move so as to drive the pushing chain assembly to move; the pushing part is arranged on the pushing chain assembly, the end part of the pushing part is suitable for installing testing equipment and instruments, and the pushing part is suitable for moving along with the pushing chain assembly so as to push the testing equipment and the testing instruments. The pushing device provided by the utility model is simple in structural arrangement and convenient to operate, can replace manual pushing, and can improve the testing efficiency and enhance the stability, reliability and accuracy of testing.

Description

Technical Field

[0001] The utility model relates to the technical field of geomechanics testing, in particular to a pushing device for geomechanics testing. Background Art

[0002] With the development and utilization of underground space by humans, underground engineering has become an indispensable part of the human living environment. During the design and construction of underground engineering, such as underground coal mine design, in-situ stress testing in boreholes, surrounding rock strength testing, and surrounding rock structure observation are important factors determining support design, cross-sectional form of the structure, construction methods, etc. Accurately measuring the in-situ stress of the original rock is a necessary condition for ensuring structural safety and support design.

[0003] In the specific implementation process, a test instrument is pushed into a borehole to the depth to be tested using a push rod for relevant tests. During the pushing process, several testers are required, the operation process is complicated, and the labor intensity is relatively high. Moreover, the manual pushing speed is uneven, which easily affects the test results. In addition, with the improvement of underground engineering construction technology, the buried depth and cross-sectional size of underground engineering are both increasing continuously. The increase in buried depth and cross-sectional size will inevitably lead to an increase in the test hole depth. With the increase in the test hole depth, the above problems become increasingly prominent and significant. Summary of the Utility Model

[0004] The utility model provides a pushing device for geomechanics testing to solve the above technical defects in the prior art. The structure of the pushing device is simple, the operation is convenient, it can replace manual pushing, improve the test efficiency, and enhance the stability, reliability and accuracy of the test.

[0005] The utility model provides a pushing device for geomechanics testing, including a support assembly, a pushing assembly and a pusher.

[0006] The pushing assembly includes a mounting component and a pushing component. The mounting component is arranged on the support assembly. The pushing component includes a pushing chain assembly, a transmission chain assembly and a driving component. The pushing chain assembly is arranged on the mounting component and is in transmission connection with the mounting component. The transmission chain assembly is arranged between the mounting component and the support assembly and is in transmission connection with the pushing chain assembly. The driving component is used to drive the transmission chain assembly to move, and then drive the pushing chain assembly to move;

[0007] The pusher is arranged on the pushing chain assembly. The end of the pusher is suitable for installing a test instrument, and the pusher is suitable for moving with the pushing chain assembly to push the test instrument.

[0008] According to the pushing device for geomechanics testing provided by the utility model, the pushing chain assembly includes:

[0009] The first transmission shaft is rotatably arranged on the mounting component;

[0010] The second transmission shaft is rotatably arranged on the mounting component and is spaced from the first transmission shaft;

[0011] The pushing chain is respectively in transmission connection with the first transmission shaft and the second transmission shaft, and friction blocks are arranged on each link plate of the pushing chain;

[0012] The pressing component is arranged on the mounting component and is used to abut the pushing piece against the friction block so that the pushing piece moves under the action of friction force.

[0013] According to the pushing device for geomechanics testing provided by the present utility model, the transmission chain assembly includes a first sprocket, a second sprocket and a transmission chain. The first sprocket and the second sprocket are both arranged on the support assembly; the second sprocket is fixedly connected to the second transmission shaft, and the transmission chain is respectively in transmission connection with the first sprocket and the second sprocket; any one of the first sprocket and the second sprocket is in transmission connection with the driving component.

[0014] According to the pushing device for geomechanics testing provided by the present utility model, the transmission chain assembly further includes:

[0015] The tensioning component includes a tensioning bracket, a first tensioning wheel and a second tensioning wheel. The tensioning bracket is fixedly arranged on the mounting component. The tensioning bracket includes a first tensioning arm and a second tensioning arm arranged at an angle to each other. The first tensioning wheel is arranged on the first tensioning arm, and the second tensioning wheel is arranged on the second tensioning arm. The transmission chain is respectively in transmission connection with the first tensioning wheel and the second tensioning wheel.

[0016] According to the pushing device for geomechanics testing provided by the present utility model, the driving component includes a speed change mechanism and a crank. The transmission chain assembly is in transmission connection with the speed change mechanism. The crank is arranged on the driving shaft of the speed change mechanism and is used to drive the speed change mechanism to move so as to drive the transmission chain assembly to move at different transmission speeds.

[0017] According to the pushing device for geomechanics testing provided by the present utility model, the speed change mechanism includes a first speed change gear, a second speed change gear, a third speed change gear and a fourth speed change gear. The first speed change gear is in transmission connection with the transmission chain assembly. The first speed change gear meshes with the second speed change gear. The second speed change gear and the third speed change gear are coaxially arranged. The third speed change gear meshes with the fourth speed change gear;

[0018] The number of teeth of the first variable-speed gear is greater than that of the second variable-speed gear. The number of teeth of the third variable-speed gear is less than that of the first variable-speed gear and greater than that of the second variable-speed gear. The number of teeth of the fourth variable-speed gear is less than that of the third variable-speed gear and greater than that of the second variable-speed gear.

[0019] According to the pushing device for geomechanics testing provided by the present utility model, the pushing assembly further includes a pre-tightening component, which is arranged on the mounting component and is used for pre-tightening the pushing piece.

[0020] According to the pushing device for geomechanics testing provided by the present utility model, the pre-tightening component includes a pre-tightening base, a pre-tightening piece and a rotation adjustment piece. A locking hole is formed on the side wall of the pre-tightening base. The pre-tightening piece is threadedly connected to the locking hole and is used for pre-tightening the pushing piece. The rotation adjustment piece is arranged on the pre-tightening base and is used for adjusting the angle of the pushing piece.

[0021] According to the pushing device for geomechanics testing provided by the present utility model, the pushing assembly further includes a counting component, which is arranged on the mounting component and is used for counting the number of chain plates of the conveyor chain in the conveyor chain assembly.

[0022] According to the pushing device for geomechanics testing provided by the present utility model, the pushing assembly further includes a backstop ratchet assembly. The backstop ratchet assembly includes a pawl and a ratchet. The pawl is arranged on the mounting component. The ratchet is arranged on the transmission shaft of the pushing chain assembly. The ratchet and the pawl cooperate with each other to prevent the pushing chain assembly from moving in the reverse direction.

[0023] According to the pushing device for geomechanics testing provided by the present utility model, it further includes an angle adjustment component. The angle adjustment component is arranged on the support assembly. The pushing assembly is rotatably connected to the support assembly. The installation position of the pushing assembly and the angle adjustment component is adjustable, so that the angle of the pushing assembly relative to the support assembly is adjustable.

[0024] According to the pushing device for geomechanics testing provided by the present utility model, the angle adjustment component includes an adjustment base plate and an adjustment piece. The adjustment base plate is fixedly arranged on the support assembly. A plurality of adjustment holes are arranged in a circumferential array on the adjustment base plate. The adjustment piece is used for locking the mounting component of the pushing assembly in the corresponding adjustment hole.

[0025] According to the pushing device for geomechanics testing provided by the present utility model, the support assembly includes a frame assembly and at least three leg assemblies. The frame assembly is arranged on at least three leg assemblies. The mounting component is arranged on the frame assembly.

[0026] The pushing device for geomechanics testing provided by the present utility model sets a pushing component and a pushing member on a support component, and the pushing member includes a pushing chain assembly, a transmission chain assembly, and a driving component. The pushing chain assembly is arranged on the installation component and is in transmission connection with the installation component. The transmission chain assembly is arranged between the installation component and the support component and is in transmission connection with the pushing chain assembly. The driving component is used to drive the transmission chain assembly to move, thereby driving the pushing chain assembly to move. The pushing member is arranged on the pushing chain assembly, and the end of the pushing member is suitable for installing a testing instrument. The pushing member is suitable for moving along with the pushing chain assembly to push the testing instrument. The structure of the pushing device is simple, the operation is convenient, it can replace manual pushing, improve the testing efficiency, and enhance the stability, reliability, and accuracy of the testing. It can solve problems such as non-uniform manual pushing speed and limited pushing ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 is the front view of the pushing device for geomechanics testing provided by the embodiment of the present utility model.

[0029] Figure 2 is Figure 1 the partial structural schematic diagram of the shown pushing device for geomechanics testing.

[0030] Figure 3 is the top view of the pushing device for geomechanics testing provided by the embodiment of the present utility model.

[0031] Figure 4 is Figure 3 the partial structural schematic diagram of the shown pushing device for geomechanics testing.

[0032] REFERENCE NUMERALS:

[0033] 10. Support component; 11. Frame component; 12. Leg component;

[0034] 20. Pushing component; 21. Installation component; 22. Pushing chain assembly; 221. First transmission shaft; 222. Second transmission shaft; 223. Pushing chain; 2231. Friction block; 224. Pressing component; 23. Conveyor chain assembly; 231. First sprocket; 232. Second sprocket; 233. Conveyor chain; 234. Tensioning component; 2341. Tensioning bracket; 2342. First tensioning wheel; 2343. Second tensioning wheel; 24. Driving component; 241. Speed change mechanism; 2411. First speed change gear; 2412. Second speed change gear; 2413. Third speed change gear; 2414. Fourth speed change gear; 242. Crank; 25. Pre-tightening component; 251. Pre-tightening base; 252. Pre-tightening piece; 253. Rotary adjusting piece; 26. Counting component; 27. Anti-back ratchet assembly; 271. Pawl; 272. Ratchet wheel;

[0035] 30. Pushing piece;

[0036] 40. Angle adjusting component; 41. Adjusting base plate; 411. Adjusting hole; 42. Adjusting piece. Detailed implementation mode

[0037] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0038] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0039] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal height than the second feature.

[0040] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0041] Figure 1 is the front view of the pushing device for geomechanics testing provided by the embodiment of the present utility model. Figure 2 is Figure 1 the partial structural schematic diagram of the pushing device for geomechanics testing shown. Figure 3 is the top view of the pushing device for geomechanics testing provided by the embodiment of the present utility model. Figure 4 is Figure 3 the partial structural schematic diagram of the pushing device for geomechanics testing shown.

[0042] Referring to Figures 1 to 4 , the embodiment of the present utility model provides a pushing device for geomechanics testing, and the pushing device includes a support assembly 10, a pushing assembly 20, and a pusher 30.

[0043] The support assembly 10 includes a frame assembly 11 and at least three leg assemblies 12. The frame assembly 11 is provided on at least three leg assemblies 12, that is, the leg assemblies 12 are provided with at least three, and four leg assemblies 12, five leg assemblies 12, etc. can also be provided. At least three leg assemblies 12 are used to support the frame assembly 11 to improve the stability of the frame assembly 11. The following embodiments of the present utility model will be described by taking the setting of four leg assemblies 12 as an example.

[0044] The frame assembly 11 is a rectangular structure surrounded by four side plates. The frame assembly 11 serves as the installation carrier of the pushing device, is used to carry the pushing assembly 20 and the pusher 30, and is used to connect the leg assemblies 12. Among them, the frame assembly 11 can divide the pushing device into upper and lower parts. The upper part is composed of structures such as the pushing assembly 20 and the pusher 30 to complete the pushing work. The lower part is composed of four groups of leg assemblies 12 installed on the frame assembly 11, and the leg assemblies 12 provide stable support for the upper part structure of the pushing device to meet the various pushing functions of the pushing device.

[0045] Among them, the four groups of outrigger assemblies 12 and the frame assembly 11 are fitted through shafts and holes. After the outrigger assemblies 12 are assembled on the frame assembly 11, they can be tilted and adjusted by 0-45 degrees. For example, the outrigger assembly 12 includes an outrigger part and an engagement connection part. The outrigger part is meshed with the engagement connection part and can rotate relative to the engagement connection part to adjust the tilt position. The engagement connection part is installed on the frame assembly 11 by means of shaft and hole fitting. When adjusting the tilt angle of the outrigger part, pull open the tooth engagement connection and then push it to a new tooth engagement position.

[0046] In addition, the length of the outrigger part can be telescopic. For example, the outrigger part is composed of multiple outrigger segments, and each outrigger segment can rotate around the shaft to extend or shorten. After the outrigger segment rotates to the required position, tighten the nut on the shaft to lock it. This setting facilitates the carrying and use of the pushing device.

[0047] The pushing assembly 20 includes a mounting part 21 and a pushing part. The mounting part 21 is arranged on the support assembly 10 and is used to support each part of the pushing part. Among them, the mounting part 21 can be composed of two relatively arranged mounting plates, and side plates or baffles can also be added according to the mounting requirements of each part of the pushing part.

[0048] The pushing part includes a pushing chain assembly 22, a transmission chain assembly 23 and a driving part 24. The pushing chain assembly 22 is arranged on the mounting part 21 and is in transmission connection with the mounting part 21. The transmission chain assembly 23 is arranged between the mounting part 21 and the support assembly 10 and is in transmission connection with the pushing chain assembly 22. The driving part 24 is used to drive the transmission chain assembly 23 to move, and then drive the pushing chain assembly 22 to move.

[0049] The pusher 30 is of a rod-shaped structure. The pusher 30 is arranged on the pushing chain assembly 22. The end of the pusher 30 is suitable for installing a test instrument, and the pusher 30 is suitable for moving with the pushing chain assembly 22 to push the test instrument.

[0050] When implementing the pushing process by the pushing device provided by the embodiment of the present invention, first unfold the pushing device from the folded state to the use state, fully unfold the outrigger assembly 12 for support, install the pusher 30 in the pushing chain assembly 22 of the pushing device, and then install the test instrument at the end of the pusher 30. Then manually control the driving part 24 to move, thereby driving the transmission chain assembly 23 to move, and then driving the pushing chain assembly 22 to move. The pusher 30 moves with the pushing chain assembly 22 to push the test instrument to the intended test depth in the drill hole for relevant tests. During this pushing process, the pushing device replaces manual pushing operations, requiring fewer test personnel, simple operation, and less labor intensity.

[0051] It can be understood that the pushing device for geomechanics testing provided by the embodiments of the present utility model is provided with a pushing assembly 20 and a pushing member 30 on a support assembly 10, and the pushing member includes a pushing chain assembly 22, a transmission chain assembly 23 and a driving member 24. The pushing chain assembly 22 is arranged on an installation member 21 and is in transmission connection with the installation member 21. The transmission chain assembly 23 is arranged between the installation member 21 and the support assembly 10 and is in transmission connection with the pushing chain assembly 22. The driving member 24 is used to drive the movement of the transmission chain assembly 23, and then drive the movement of the pushing chain assembly 22. The pushing member 30 is arranged on the pushing chain assembly 22, and the end of the pushing member 30 is suitable for installing a testing instrument. The pushing member 30 is suitable for moving with the pushing chain assembly 22 to push the testing instrument. The structure of the pushing device is simple and easy to operate, can replace manual pushing, can improve the testing efficiency, and enhance the stability, reliability and accuracy of the testing. It can solve the problems such as easy shaking, non-uniform speed and limited pushing ability of manual pushing of rods.

[0052] Continue to refer to Figures 1 to 4 , in some embodiments of the present utility model, the pushing chain assembly 22 includes a first transmission shaft 221, a second transmission shaft 222, a pushing chain 223 and a pressing member 224.

[0053] Both the first transmission shaft 221 and the second transmission shaft 222 are rotatably arranged on the installation member 21 through components such as bearings, and the second transmission shaft 222 is arranged at an interval from the first transmission shaft 221 in the vertical direction. The pushing chain 223 is respectively in transmission connection with the first transmission shaft 221 and the second transmission shaft 222. A friction block 2231 is arranged on each link plate of the pushing chain 223. The friction block 2231 can be an elastic member such as a rubber material, has a large friction force, and can generate a certain deformation under the action of extrusion, avoiding hard collision between the pushing member 30 and the friction block 2231.

[0054] The pressing member 224 is arranged on the installation member 21 and is used to abut the pushing member 30 against the friction block 2231, so that the friction block 2231 drives the pushing member 30 to move through friction. Among them, a threaded hole can be arranged on the side wall of the installation member 21, and the pressing member 224 can be structures such as a bolt and a pressing wheel. The bolt of the pressing member 224 is threadedly connected to the threaded hole, and a tool such as a wrench is used to screw the pressing member 224 to adjust the pressure applied by the pressing member 224 to the pushing member 30.

[0055] For example, the bolt of the pressing member 224 can be an M20 bolt. By screwing the bolt, the extrusion degree of the pressing wheel in direct contact with the pushing member 30 on the pushing member 30 is adjusted, so as to adjust the friction force between the pushing member 30 and the friction block 2231 during the lifting operation.

[0056] It should be noted that the design of the pressing member 224 needs to ensure that the pushing center of the pusher 30 remains unchanged during the process of pressing the pusher 30 and releasing the pressure on the pusher 30. The lifting conversion of the push chain assembly 22 is realized by two sets of overrunning clutches, that is, both the first transmission shaft 221 and the second transmission shaft 222 are rotatably arranged on the mounting member 21 through overrunning clutches. The overrunning clutch can have a self-clutching function by using the speed change or rotation direction change of the main and driven parts.

[0057] For example, the push chain assembly 22 is designed according to the currently used push rod with a length of 1.5 meters, a diameter of 25 mm, and a threaded connection. The push chain assembly 22 adopts a setting of a conveyor chain and a pressing wheel, and the transmission is stable. The maximum pushing weight of the push chain assembly 22 is about 150 kg. The force on the pusher 30 can be adjusted between 0 - 150 kg through the M20 bolt on the pressing member 224, so that the pusher 30 can push smoothly and continuously. The total weight of the push chain assembly 22 is about 30 kg. Two workers can easily assemble and disassemble it. After disassembly, the single-piece length of the push chain assembly 22 does not exceed 1 meter, which is convenient for handling and carrying.

[0058] Continue to refer to Figures 1 to 4 , in some embodiments of the present invention, the conveyor chain assembly 23 includes a first sprocket 231, a second sprocket 232, and a conveyor chain 233.

[0059] The first sprocket 231 is rotatably arranged on the frame assembly 11 of the support assembly 10 through components such as a rotating shaft. The second sprocket 232 is arranged on the mounting member 21, and the second sprocket 232 is connected to the second transmission shaft 222. Equivalently, the second sprocket 232 is fixedly arranged on the first transmission shaft 221. The conveyor chain 233 is respectively in transmission connection with the first sprocket 231 and the second sprocket 232; the driving member 24 is in transmission connection with any one of the first sprocket 231 and the second sprocket 232.

[0060] In this embodiment, the driving member 24 is in transmission connection with the first sprocket 231. When the driving member 24 moves, it drives the first sprocket 231 to rotate. The first sprocket 231 synchronously drives the second sprocket 232 to rotate through the conveyor chain 233. Since the second sprocket 232 is fixedly arranged on the first transmission shaft 221, the first transmission shaft 221 can be driven to rotate. When the first transmission shaft 221 rotates, it drives the push chain 223 and the second transmission shaft 222 to rotate synchronously. Since the pusher 30 is located between the pressing wheel and the friction block 2231, the push chain 223 drives the pusher 30 to perform a lifting motion through frictional action to achieve pushing.

[0061] Continue to refer to Figures 1 to 4, in some embodiments of the present utility model, the conveyor chain assembly 23 further includes a tensioning member 234. The tensioning member 234 is disposed on the mounting member 21 and is in driving connection with the conveyor chain 233, for tensioning the conveyor chain 233 to prevent the conveyor chain 233 from loosening and affecting the conveying accuracy.

[0062] Wherein, the tensioning member 234 includes a tensioning bracket 2341, a first tensioning wheel 2342 and a second tensioning wheel 2343. The tensioning bracket 2341 is fixedly disposed on the mounting member 21. The tensioning bracket 2341 includes a first tensioning arm and a second tensioning arm arranged at an angle to each other. The first tensioning wheel 2342 is disposed on the first tensioning arm, and the second tensioning wheel 2343 is disposed on the second tensioning arm. The conveyor chain 233 is respectively in driving connection with the first tensioning wheel 2342 and the second tensioning wheel 2343.

[0063] Continue to refer to Figures 1 to 4 , in some embodiments of the present utility model, the driving member 24 includes a speed change mechanism 241 and a crank 242. The speed change mechanism 241 can achieve the design of a three-stage reducer, so that the conveying of the pusher 30 is more stable, and both the thrust and the pushing speed can be adjusted and controlled.

[0064] The conveyor chain assembly 23 is in driving connection with the speed change mechanism 241. The crank 242 is disposed on the drive shaft of the speed change mechanism 241, for driving the speed change mechanism 241 to move, so as to drive the conveyor chain assembly 23 to move at different transmission speeds.

[0065] In some embodiments of the present utility model, the speed change mechanism 241 includes a first speed change gear 2411, a second speed change gear 2412, a third speed change gear 2413 and a fourth speed change gear 2414. The first speed change gear 2411 is in driving connection with the conveyor chain assembly 23. The first speed change gear 2411 meshes with the second speed change gear 2412. The second speed change gear 2412 and the third speed change gear 2413 are coaxially arranged. The third speed change gear 2413 meshes with the fourth speed change gear 2414.

[0066] Wherein, the number of teeth of the first speed change gear 2411 is greater than that of the second speed change gear 2412. The number of teeth of the third speed change gear 2413 is less than that of the first speed change gear 2411 and greater than that of the second speed change gear 2412. The number of teeth of the fourth speed change gear 2414 is less than that of the third speed change gear 2413 and greater than that of the second speed change gear 2412.

[0067] Correspondingly, the first variable-speed gear 2411 is a driving gear, and the second variable-speed gear 2412, the third variable-speed gear 2413, and the fourth variable-speed gear 2414 can all be driving gears. The first variable-speed gear 2411 is connected to the driving shaft where the first sprocket 231 is located, and this driving shaft can be a primary driving shaft. The second variable-speed gear 2412 and the third variable-speed gear 2413 are coaxially arranged on the secondary driving shaft, and the fourth variable-speed gear 2414 is independently arranged on the tertiary driving shaft. By changing the transmission ratio between the driving gear and the driving gear on the power output shaft, the torque and speed range of the driving gear are expanded to adapt to the changing lifting conditions of the pusher 30.

[0068] That is to say, by replacing the connections of the crank 242 with the primary driving shaft, the secondary driving shaft, and the tertiary driving shaft respectively, the driving gear is replaced, so that the driving gear is switched and combined with the driving shaft through different-sized gear combinations, thereby changing the torque and speed of the driving gear. Therefore, the driving position of the variable-speed mechanism 241 can be adjusted according to the different lifting forces (up to about 150 kg) of the pusher 30.

[0069] Continue to refer to Figures 1 to 4 , in some embodiments of the present invention, the pushing assembly 20 further includes a pre-tightening member 25, and the pre-tightening member 25 is arranged on the mounting member 21 for pre-tightening the pusher 30.

[0070] Continue to refer to Figures 1 to 4 , in some embodiments of the present invention, the pre-tightening member 25 includes a pre-tightening base 251, a pre-tightening member 252, and a rotation adjusting member 253. A locking hole is provided on the side wall of the pre-tightening base 251, and the pre-tightening member 252 is threadedly connected to the locking hole for pre-tightening the pusher 30. The rotation adjusting member 253 is arranged on the pre-tightening base 251 for adjusting the angle of the pusher 30.

[0071] Among them, the pre-tightening member 252 can be structures such as bolts or lock blocks, and the rotation adjusting member 253 can be structures such as handles. By tightening the pre-tightening member 252, the pusher 30 can be locked. After tightening, the rotation adjusting member 253 can be pushed to rotate 360 degrees around the axis of the pusher 30. There are positioning beads on the pre-tightening base 251 every 120 degrees. Correspondingly, by pushing the rotation adjusting member 253 to rotate around the pusher 30, the pusher 30 can be adjusted in three positions in the circumferential direction, so that the position of the pusher 30 in the circumferential direction can be adaptively adjusted according to the test direction of the test instrument.

[0072] It should be noted that the clamping and fixing effects of the pre-tightening component 25 and the pushing chain assembly 22 on the pushing member 30 do not exist simultaneously. When the pushing member 30 needs to be pushed for lifting and lowering movements, the pre-tightening component 25 is operated to release the clamping of the pushing member 30. At this time, the pushing member 30 is clamped and fixed by the pushing chain assembly 22. When the pushing member 30 stops the pushing operation and the testing direction of the testing instrument needs to be adjusted, the pushing member 30 is pre-tightened by the pre-tightening component 25, and the rotation adjusting member 253 is pushed to rotate 360 degrees around the axis of the pushing member 30 to adjust the position of the pushing member 30.

[0073] In addition, when the lifting force required by the pushing member 30 is relatively large, one of the pre-tightening component 25 and the pushing chain assembly 22 always exists for the clamping operation of the pushing member 30, and they will not be released simultaneously.

[0074] Continue to refer to Figures 1 to 4 In some embodiments of the present invention, the pushing assembly 20 further includes a counting component 26. The counting component 26 is arranged on the mounting component 21 and is used to calculate the number of chain plates of the conveying chain 233 in the conveying chain assembly 23.

[0075] For example, the counting component 26 can be a counter. Every time the conveying chain assembly 23 rises by 0.1 meter, the counting component 26 increases by 1 count. The counting component 26 does not count when the conveying chain assembly 23 descends. By counting with the counting component 26, the distance that the pushing member 30 is pushed can be accurately known.

[0076] Continue to refer to Figures 1 to 4 In some embodiments of the present invention, the pushing assembly 20 further includes a backstop ratchet assembly 27. The backstop ratchet assembly 27 includes a pawl 271 and a ratchet 272. The pawl 271 is arranged on the mounting component 21, and the ratchet 272 is arranged on the transmission shaft of the pushing chain assembly 22. The ratchet 272 cooperates with the pawl 271 to prevent the pushing chain assembly 22 from moving in the reverse direction.

[0077] Equivalently, the backstop ratchet assembly 27 needs to latch the pawl 271 on the ratchet 272 when the pushing member 30 rises (not usually used). The pawl 271 needs to be released when the pushing member 30 descends.

[0078] Continue to refer to Figures 1 to 4 In some embodiments of the present invention, the pushing device for geomechanics testing further includes an angle adjusting component 40. The angle adjusting component 40 is arranged on the support assembly 10. The pushing assembly 20 is rotatably connected to the support assembly 10, and the position of the pushing assembly 20 and the angle adjusting component 40 is adjustable, so that the angle of the pushing assembly 20 relative to the support assembly 10 is adjustable.

[0079] Specifically, the angle adjustment component 40 includes an adjustment substrate 41 and an adjuster 42. The adjustment substrate 41 is fixedly arranged on the support assembly 10. A plurality of adjustment holes 411 are arranged on the adjustment substrate 41 in a circumferential array. The adjuster 42 is used to lock the mounting component 21 of the pushing assembly 20 in the corresponding adjustment hole 411.

[0080] Among them, the adjustment substrate 41 is a 90-degree sector plate, and adjustment holes 411 with a diameter of 8 mm are evenly distributed at every 5-degree central angle along the arc edge of the sector plate. The adjustment substrate 41 is installed on the support assembly 10 in two parts, left and right. The adjustment substrate 41 is connected to the mounting component 21 through a sprocket shaft. The pushing assembly 20 can rotate and tilt by 0-90 degrees around the sprocket shaft and be locked in a determined position through the adjustment holes 411.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pushing device for geomechanical testing, characterized in that: include: Support assembly (10); A pushing component (20), comprising a mounting component (21) and a pushing component, wherein the mounting component (21) is arranged on the supporting component (10), and the pushing component comprises a pushing chain assembly (22), a conveying chain assembly (23) and a driving component (24), wherein the pushing chain assembly (22) is arranged on the mounting component (21) and is in driving connection with the mounting component (21), wherein the conveying chain assembly (23) is arranged between the mounting component (21) and the supporting component (10) and is in driving connection with the pushing chain assembly (22), and wherein the driving component (24) is used to drive the conveying chain assembly (23) to move, thereby driving the pushing chain assembly (22) to move; A pushing member (30) is provided on the pushing chain assembly (22); an end of the pushing member (30) is suitable for mounting a test instrument; and the pushing member (30) is suitable for moving with the pushing chain assembly (22) to push the test instrument.

2. The pushing device for geomechanical testing according to claim 1, characterized in that: The push chain assembly (22) comprises: A first transmission shaft (221), rotatably mounted on the mounting component (21); A second transmission shaft (222) rotatably mounted on the mounting component (21) and spaced apart from the first transmission shaft (221); A push chain (223) is respectively connected to the first transmission shaft (221) and the second transmission shaft (222), and each chain plate of the push chain (223) is provided with a friction block (2231); The pressure-applying component (224) is provided on the mounting component (21) and is used to abut the pushing component (30) against the friction block (2231) so that the pushing component (30) moves under the action of friction force.

3. The pushing device for geomechanical testing according to claim 2, characterized in that: The conveyor chain assembly (23) comprises: A first sprocket (231), arranged on the supporting assembly (10); A second sprocket (232) is disposed on the mounting component (21) and is fixedly connected to the second transmission shaft (222); The transmission chain (233) is respectively connected to the first sprocket (231) and the second sprocket (232); and either the first sprocket (231) or the second sprocket (232) is connected to the driving component (24).

4. The pushing device for geomechanical testing according to claim 3, characterized in that: The conveyor chain assembly (23) further includes: The tensioning component (234) comprises a tensioning bracket (2341), a first tensioning wheel (2342) and a second tensioning wheel (2343); the tensioning bracket (2341) is fixedly arranged on the mounting component (21); the tensioning bracket (2341) comprises a first tensioning arm and a second tensioning arm arranged at an angle to each other; the first tensioning wheel (2342) is arranged on the first tensioning arm; the second tensioning wheel (2343) is arranged on the second tensioning arm; and the transmission chain (233) is respectively connected to the first tensioning wheel (2342) and the second tensioning wheel (2343) in transmission.

5. The pushing device for geomechanical testing according to claim 1, characterized in that: The driving component (24) comprises a speed change mechanism (241) and a crank (242); The conveyor chain assembly (23) is in transmission connection with the speed change mechanism (241); the crank (242) is disposed on a drive shaft of the speed change mechanism (241) and is used to drive the speed change mechanism (241) to move, thereby driving the conveyor chain assembly (23) to move at different transmission speeds.

6. The pushing device for geomechanical testing according to claim 5, characterized in that: The speed change mechanism (241) comprises a first speed change gear (2411), a second speed change gear (2412), a third speed change gear (2413) and a fourth speed change gear (2414); the first speed change gear (2411) is in driving connection with the transmission chain assembly (23); the first speed change gear (2411) and the second speed change gear (2412) are meshed with each other; the second speed change gear (2412) and the third speed change gear (2413) are coaxially arranged; and the third speed change gear (2413) and the fourth speed change gear (2414) are meshed with each other; The number of teeth of the first speed gear (2411) is greater than the number of teeth of the second speed gear (2412), the number of teeth of the third speed gear (2413) is less than the number of teeth of the first speed gear (2411) and greater than the number of teeth of the second speed gear (2412), and the number of teeth of the fourth speed gear (2414) is less than the number of teeth of the third speed gear (2413) and greater than the number of teeth of the second speed gear (2412).

7. The pushing device for geomechanical testing according to any one of claims 1 to 6, characterized in that: The pushing component (20) further comprises a pre-tightening component (25), wherein the pre-tightening component (25) is arranged on the mounting component (21) and is used to pre-tighten the pushing member (30).

8. The pushing device for geomechanical testing according to claim 7, characterized in that: The pre-tightening component (25) comprises a pre-tightening base (251), a pre-tightening member (252) and a rotation adjusting member (253); a locking hole is provided on a side wall of the pre-tightening base (251); the pre-tightening member (252) is threadedly connected to the locking hole and is used for pre-tightening the pushing member (30); and the rotation adjusting member (253) is provided on the pre-tightening base (251) and is used for adjusting the angle of the pushing member (30).

9. The pushing device for geomechanical testing according to any one of claims 1 to 6, characterized in that: The pushing component (20) further comprises a counting component (26), wherein the counting component (26) is arranged on the mounting component (21) and is used to count the number of chain plates of the conveying chain (233) in the conveying chain assembly (23).

10. The pushing device for geomechanical testing according to any one of claims 1 to 6, characterized in that: The push assembly (20) further comprises a stop ratchet assembly (27), the stop ratchet assembly (27) comprising a pawl (271) and a ratchet (272), the pawl (271) being arranged on the mounting component (21), the ratchet (272) being arranged on the transmission shaft of the push chain assembly (22), the ratchet (272) and the pawl (271) cooperating with each other to prevent the push chain assembly (22) from moving in the opposite direction.

11. The pushing device for geomechanical testing according to any one of claims 1 to 6, characterized in that: It also includes an angle adjustment component (40), wherein the angle adjustment component (40) is arranged on the support assembly (10); The pushing assembly (20) is rotatably connected to the supporting assembly (10), and the installation positions of the pushing assembly (20) and the angle adjustment component (40) are adjustable, so that the angle of the pushing assembly (20) relative to the supporting assembly (10) is adjustable.

12. The pushing device for geomechanical testing according to claim 11, characterized in that: The angle adjustment component (40) comprises an adjustment substrate (41) and an adjustment member (42); the adjustment substrate (41) is fixedly arranged on the support assembly (10); the adjustment substrate (41) is provided with a plurality of adjustment holes (411) along a circumferential array; and the adjustment member (42) is used to lock the pushing assembly (20) in the corresponding adjustment hole (411).

13. The pushing device for geomechanical testing according to any one of claims 1 to 6, characterized in that: The support assembly (10) comprises a frame assembly (11) and at least three leg assemblies (12); the frame assembly (11) is arranged on at least three leg assemblies (12); and the mounting component (21) is arranged on the frame assembly (11).

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