Digital display full-automatic dynamic penetrometer

Abstract

According to the digital display full-automatic dynamic penetrometer, the driving hammer is connected to the lock head, the lock head is clamped in the lock sleeve through the hooking and unhooking assembly, the sensing device senses that the lock head sends an electric signal to the control module in the lock sleeve, and the control module controls the lifting device to drive the lock sleeve to ascend when receiving the electric signal of the lock head in the lock sleeve. When the hooking and unhooking assembly on the lock sleeve touches the touch unhooking device right above the lock sleeve, the hooking and unhooking assembly is automatically opened to enable the lock head to fall off, the driving hammer freely falls under the action of gravity to complete striking, and the sensing device senses that the lock head falls off from the lock sleeve and sends an electric signal to the control module; the control module controls the lifting device to drive the lock sleeve to descend until the hooking and unhooking assembly on the lock sleeve clamps the lock head again and controls the digital value displayed by the digital display to be increased by 1 when receiving the electric signal indicating that the lock head falls off from the lock sleeve, and the process is repeated, so that automatic striking and automatic counting of the hammer are achieved, manpower is saved, and counting errors are not prone to occurring.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering test equipment, and particularly relates to a digital display full-automatic dynamic penetrometer. Background Technique

[0002] In engineering construction projects, the relevant specifications and standards for test detection are constantly updated, aiming to make the detected data closer to the actual results. However, there are many uncertain factors in operation, and the human factor plays a major role among the main influencing factors. To overcome the human factor, it is necessary to consider using instruments (equipment) to replace manual operation. For example, in the dynamic penetration test of the foundation, manual operation has always had many disadvantages and large errors in the detected data. In highway engineering, the dynamic penetration test is carried out in accordance with the current standard "Code for In-situ Testing of Highway Engineering Geology" JTG 3223-2021. While meeting the requirements of the specifications for instrument equipment, the test equipment is updated to achieve the purpose of replacement.

[0003] The existing dynamic penetrometers have the following defects during test detection:

[0004] First, the number of blows is completely counted manually by the test personnel, and it is easy to count wrong.

[0005] Second, the hammer is lifted manually, and a large number of people are required for test detection. Moreover, the lifted height is not enough, or the phenomenon of rebound after the top impact of the hammer occurs frequently, seriously affecting the accuracy of test detection data.

[0006] Third, the low efficiency of test detection leads to untimely response of test results. When manually hitting continuously for a certain number of times, it is easy to get tired, resulting in an increase in the time cost of manual labor. Content of the Utility Model

[0007] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a digital display full-automatic dynamic penetrometer.

[0008] To solve the above problems, the utility model adopts the following technical solutions:

[0009] A digital display full-automatic dynamic cone penetrometer, comprising a hammer, a lock sleeve, a lock head, a touch and unhook device, a hanging and unhooking assembly, a lifting device, a counting device and a control module. The lock head is connected to the hammer, and the hanging and unhooking assembly is connected to the lock sleeve for clamping the lock head. The touch and unhook device is arranged directly above the lock sleeve. The lifting device is connected to the lock sleeve to drive the lock sleeve to lift and lower. When the hanging and unhooking assembly touches the touch and unhook device, the hanging and unhooking assembly automatically opens to make the lock head fall off. The counting device includes an induction device and a digital display. The induction device, the digital display, the lifting device and the control module are electrically connected. The digital display is used to display numerical values. The induction device is connected to the lock sleeve for sensing the lock head. When the induction device senses that the lock head is inside the lock sleeve or falls off from the lock sleeve, it sends an electrical signal to the control module. When the control module receives the electrical signal that the lock head has fallen off from the lock sleeve, it controls the lifting device to drive the lock sleeve to lower and controls the numerical value displayed by the digital display to increase by 1. When the control module receives the electrical signal that the lock head is inside the lock sleeve, it controls the lifting device to drive the lock sleeve to rise.

[0010] Preferably, the lifting device includes a bracket, a forward and reverse motor and a traction rope. The bracket includes a bottom plate and a vertical rod. The bottom plate is connected to the bottom of the vertical rod. The top of the vertical rod is connected with an extension rod extending to one side. The forward and reverse motor is arranged on the bottom plate. One end of the traction rope is wound around the rotating shaft of the forward and reverse motor, and the other end is wound around the vertical rod and the extension rod and then connected to the lock sleeve. The touch and unhook device is connected to the vertical rod. The control module and the forward and reverse motor are electrically connected to control the forward or reverse rotation of the forward and reverse motor to wind up or let out the traction rope.

[0011] Preferably, the bottom plate and the extension rod are respectively connected to opposite sides of the upper and lower ends of the vertical rod.

[0012] Preferably, the forward and reverse motor is arranged at the edge of the bottom plate far from the vertical rod.

[0013] Preferably, moving wheels are arranged at the bottom of the bottom plate.

[0014] Preferably, fixed pulleys are arranged at the top end of the vertical rod and the end of the extension rod, and the traction rope is connected in the pulley groove of the fixed pulley.

[0015] Preferably, a lifting ring is connected to the lock sleeve. One end of the towing rope is connected to the lifting ring. A vertical through hole is formed in the middle of the lock sleeve. Slots horizontally penetrating the lock sleeve are formed on both sides of the through hole. The lock head includes a clamping portion and a connecting portion connected below the clamping portion. The striker is connected to the bottom of the connecting portion. The side wall of the clamping portion is an inclined surface and the bottom is a horizontal surface. The hanging and disengaging hook assembly includes a bolt, a lever and a return spring. The bolt is slidably inserted into the slot, one end of which extends into the through hole for abutting against the bottom of the clamping portion, and the other end extends to the outside of the lock sleeve. The lever is hinged to the lock sleeve to form a fulcrum. The lower end of the lever is hinged to one end of the bolt extending to the outside of the lock sleeve. The upper end of the lever extends between the touch disengaging device and the lock sleeve. When the upper end of the lever approaches the lock sleeve, the lever rotates around the fulcrum to make its lower end away from the lock sleeve and pull the bolt outwards along the slot. The return spring is connected between the bolt and the lock sleeve.

[0016] Preferably, the clamping portion is conical or frustum-shaped.

[0017] Preferably, a fulcrum moving groove is provided at the position where the lever is hinged to the lock sleeve. The hinge shaft where the lever is hinged to the lock sleeve is slidably connected in the fulcrum moving groove.

[0018] Preferably, the sensing device includes a box body, a push rod and a pressing spring. The box body is arranged on the side wall of the lock sleeve. A jack horizontally penetrating the lock sleeve is formed on the side wall of the lock sleeve. One end of the push rod is movably inserted into the box body, and the other end is movably inserted into the jack and the end is used for abutting against the inclined side wall of the clamping portion. Contact points A, B, and C electrically connected to the control module are arranged in the box body. The contact points A, B, and C are arranged at equal distances in sequence from the direction far from the lock sleeve to the direction close to the lock sleeve. A conductive portion is arranged on the push rod. The pressing spring is connected between the box body and the end of the push rod for pushing the push rod towards the side close to the lock sleeve to connect the conductive portion with the contact points B and C. When the lock head is clamped in the lock sleeve, the inclined side wall of the clamping portion pushes the push rod to compress the pressing spring so that the conductive portion is connected with the contact points A and B. When the conductive portion is connected with the contact points B and C, the control module receives an electrical signal to control the lifting device to drive the lock sleeve to descend and control the digital value displayed by the digital display to increase by 1. When the conductive portion is connected with the contact points A and B, the control module receives an electrical signal to control the lifting device to drive the lock sleeve to ascend.

[0019] Advantages of the present utility model

[0020] Compared with the prior art, the advantages of the present utility model are as follows:

[0021] The hammer of the present utility model is connected to the lock head. The lock head is clamped in the lock sleeve through a hanging and disengaging hook assembly. The sensing device senses that the lock head is in the lock sleeve and sends an electrical signal to the control module. When the control module receives the electrical signal that the lock head is in the lock sleeve, it controls the lifting device to drive the lock sleeve to rise. Until the hanging and disengaging hook assembly on the lock sleeve touches the touch and disengaging device directly above the lock sleeve, the hanging and disengaging hook assembly automatically opens and the lock head falls off. The hammer falls freely under gravity to complete the striking. The sensing device senses that the lock head falls off from the lock sleeve and sends an electrical signal to the control module. When the control module receives the electrical signal that the lock head falls off from the lock sleeve, it controls the lifting device to drive the lock sleeve to descend until the hanging and disengaging hook assembly on the lock sleeve re-clamps the lock head and controls the digital value displayed on the digital display to increase by 1. This cycle is repeated, thus realizing the automatic striking and automatic counting of the hammer, saving manpower and not being prone to counting errors. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of the present utility model;

[0023] Figure 2 It is a schematic structural diagram of the hammer, lock sleeve, lock head, touch and disengaging device, and hanging and disengaging hook assembly of the present utility model;

[0024] Figure 3 It is a schematic structural diagram of the lock sleeve, lock head, and sensing device of the present utility model;

[0025] Figure 4 It is a schematic structural diagram of the sensing device of the present utility model;

[0026] Figure 5 It is a schematic structural diagram of the digital display of the present utility model. Detailed Embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper / lower end", "inner", "outer", "front end", "back end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "set / sleeved with", "socket connection", "connection", etc. should be understood in a broad sense. For example, "connection" 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, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Please refer to Figures 1-5 , the present utility model provides a technical solution: a digital display full-automatic dynamic cone penetrometer, which includes a hammer 1, a lock sleeve 21, a lock head 22, a touch release hook device 23, a hanging and releasing hook assembly, a lifting device, a counting device, and a control module. The lock head 22 is connected to the hammer 1. The hanging and releasing hook assembly is connected to the lock sleeve 21 and is used to catch the lock head 22. The touch release hook device 23 is arranged directly above the lock sleeve 21. The lifting device is connected to the lock sleeve 21 to drive the lock sleeve 21 to lift and lower. When the hanging and releasing hook assembly touches the touch release hook device 23, the hanging and releasing hook assembly automatically opens to make the lock head 22 fall off. The counting device includes an induction device 5 and a digital display 3. The induction device 5, the digital display 3, the lifting device, and the control module are electrically connected. The digital display 3 is used to display numerical values. The induction device 5 is connected to the lock sleeve 21 and is used to sense the lock head 22. When the induction device 5 senses that the lock head 22 is inside the lock sleeve 21 or falls off from the lock sleeve 21, it sends an electrical signal to the control module. When the control module receives the electrical signal that the lock head 22 falls off from the lock sleeve 21, it controls the lifting device to drive the lock sleeve 21 to lower and controls the numerical value displayed by the digital display 3 to increase by 1. When the control module receives the electrical signal that the lock head 22 is inside the lock sleeve 21, it controls the lifting device to drive the lock sleeve 21 to rise.

[0031] The working principle of the utility model is as follows: the hammer 1 is connected to the lock head 22, and the lock head 22 is clamped in the lock sleeve 21 through the hanging and unhooking assembly. The sensing device 5 senses that the lock head 22 is in the lock sleeve 21 and sends an electrical signal to the control module. When the control module receives the electrical signal that the lock head 22 is in the lock sleeve 21, it controls the lifting device to drive the lock sleeve 21 to rise until the hanging and unhooking assembly on the lock sleeve 21 touches the touch unhooking device 23 just above the lock sleeve 21, and the hanging and unhooking assembly automatically opens to make the lock head 22 fall off. The hammer 1 falls freely under gravity to complete the striking. The sensing device 5 senses that the lock head 22 falls off from the lock sleeve 21 and sends an electrical signal to the control module. When the control module receives the electrical signal that the lock head 22 falls off from the lock sleeve 21, it controls the lifting device to drive the lock sleeve 21 to descend until the hanging and unhooking assembly on the lock sleeve 21 re-clamps the lock head 22 and controls the digital value displayed on the digital display 3 to increase by 1, and so on. The cycle is repeated, thereby realizing automatic striking and automatic counting of the hammer 1, saving manpower, and not prone to counting errors.

[0032] Furthermore, the lifting device includes a bracket, a forward and reverse motor 42 and a traction rope 43, the bracket includes a base plate 411 and a vertical pole 412, the base plate 411 is connected to the bottom of the vertical pole 412, the top of the vertical pole 412 is connected to an extension rod 413 extending to one side, the forward and reverse motor 42 is arranged on the base plate 411, one end of the traction rope 43 is wound around the rotating shaft of the forward and reverse motor 42, and the other end is connected to the lock sleeve 21 after passing over the vertical pole 412 and the extension rod 413, the touch unhooking device 23 is connected to the vertical pole 412, and the control module is electrically connected to the forward and reverse motor 42 to control the forward and reverse motor 42 to rotate forward or reverse to reel in or lengthen the traction rope 43, thereby realizing the lifting and lowering of the lock sleeve 21.

[0033] Furthermore, the bottom plate 411 and the extension rod 413 are respectively connected to opposite sides of the upper and lower ends of the vertical pole 412, and the forward and reverse motor 42 is arranged on the edge of the bottom plate 411 away from the vertical pole 412, so as to achieve counterweight and prevent the bracket from tipping over.

[0034] Furthermore, the bottom of the base plate 411 is provided with moving wheels 414 for easy movement.

[0035] Furthermore, a fixed pulley 415 is provided at the top of the vertical pole 412 and the end of the extension rod 413, and the traction rope 43 is connected to the pulley groove of the fixed pulley 415, thereby providing a walking track for the traction wire rope and reducing friction resistance.

[0036] Further, a lifting ring 211 is connected to the lock sleeve 21. One end of the towing rope 43 is connected to the lifting ring 211. A vertical through hole 212 is formed in the middle of the lock sleeve 21. Slots 213 that horizontally penetrate the lock sleeve 21 are formed on both sides of the through hole 212. The lock head 22 includes a clamping portion 221 and a connecting portion 222 connected below the clamping portion 221. The striker 1 is connected to the bottom of the connecting portion 222. The side wall of the clamping portion 221 is an inclined surface and the bottom is a horizontal surface. The hanging and disengaging hook assembly includes a pin 241, a lever 242 and a return spring 243. The pin 241 is slidably inserted into the slot 213. One end of the pin extends into the through hole 212 for abutting against the bottom of the clamping portion 221, and the other end extends to the outside of the lock sleeve 21. The lever 242 is hinged to the lock sleeve 21 to form a fulcrum 244. The lower end of the lever is hinged to one end of the pin 241 extending to the outside of the lock sleeve 21. The upper end of the lever 242 extends between the touch disengaging device 23 and the lock sleeve 21. When the upper end of the lever 242 approaches the lock sleeve 21, the lever 242 rotates around the fulcrum 244 to make its lower end move away from the lock sleeve 21 and pull the pin 241 outwards along the slot 213. The return spring 243 is connected between the pin 241 and the lock sleeve 21. During use, the striker 1 is connected below the connecting portion 222, and the lock sleeve 21 is lowered so that the lock head 22 is inserted into the through hole 212 of the lock sleeve 21. The inclined side wall of the clamping portion 221 pushes the pin 241 to both sides. When the clamping portion 221 completely passes through the pin 241, the return spring 243 makes the pin 241 return to its position. The pin 241 abuts against the bottom of the clamping portion 221. By connecting the towing rope 43 connected to the forward and reverse motor 42 to the lifting ring 211, the lock sleeve 21, the lock head 22, the striker 1 connected to the lock head 22 and the hanging and disengaging hook assembly can be lifted. Set the position of the touch disengaging device 23 according to the height at which the striker 1 needs to be lifted and dropped. When the lock sleeve 21, the lock head 22, the striker 1 connected to the lock head 22 and the hanging and disengaging hook assembly rise to a preset height, the lock sleeve 21 continues to move upward under the traction of the lifting ring 211, while the upper end of the lever 242 is blocked by the touch disengaging device 23. The upper end of the lever 242 approaches the lock sleeve 21. The lever 242 rotates around the fulcrum 244 to make its lower end move away from the lock sleeve 21 and pull the pin 241 outwards along the slot 213. The clamping portion 221 loses the support of the pin 213, and the lock head 22 and the striker 1 fall freely under gravity, thereby realizing automatic hanging and disengaging of the hook.

[0037] Specifically, the touch disengaging device 23 is a limit baffle.

[0038] Further, the clamping portion 221 is conical or frustum-shaped, preferably frustum-shaped. The side walls around the clamping portion 221 are all inclined surfaces, so that the clamping portion 221 can be inserted into the through hole 212 of the lock sleeve 21 in any direction.

[0039] Further, a fulcrum movement groove 245 is provided at the position where the lever 242 is hinged to the lock sleeve 21. The hinge shaft where the lever 242 is hinged to the lock sleeve 21 is slidably connected in the fulcrum movement groove 245, so that the fulcrum 244 where the lever 242 is hinged to the lock sleeve 21 can move, ensuring that the bolt 241 moves in the horizontal direction.

[0040] Further, the sensing device 5 includes a box body 51, a push rod 52, and a compression spring 53. The box body 51 is arranged on the side wall of the lock sleeve 21. A jack that horizontally penetrates the lock sleeve 21 is provided on the side wall of the lock sleeve 21. One end of the push rod 52 is movably inserted into the box body 51, and the other end is movably inserted into the jack and the end is used to abut against the inclined side wall of the clamping portion 221. A contact A511, a contact B512, and a contact C513 that are electrically connected to the control module are arranged in the box body 51. The contact A511, the contact B512, and the contact C513 are arranged at equal intervals in sequence from the direction away from the lock sleeve 21 to the direction close to the lock sleeve 21. A conductive portion 521 is arranged on the push rod 52. The compression spring 53 is connected between the box body 51 and the end of the push rod 52 to push the push rod 52 toward the side close to the lock sleeve 21 so that the conductive portion 521 is connected to the contact B512 and the contact C513. When the lock head 22 is clamped in the lock sleeve 21, the inclined side wall of the clamping portion 221 pushes the push rod 52 to compress the compression spring 53 so that the conductive portion 521 is connected to the contact A511 and the contact B512. When the conductive portion 521 is connected to the contact B512 and the contact C513, the control module receives an electrical signal to control the lifting device to drive the lock sleeve 21 to descend and control the numerical value displayed by the digital display 3 to increase by 1. When the conductive portion 521 is connected to the contact A511 and the contact B512, the control module receives an electrical signal to control the lifting device to drive the lock sleeve 21 to ascend, thereby realizing the sensing of the lock head 22 by the sensing device 5.

[0041] The control module in the present utility model can be implemented by a PLC programmable controller.

[0042] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation. An element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0043] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A digital display fully automatic dynamic probe, characterized in that: The invention comprises a hammer (1), a lock sleeve (21), a lock head (22), a touch-release hook device (23), a hook-and-release assembly, a lifting device, a counting device and a control module, wherein the lock head (22) is connected to the hammer (1), the hook-and-release hook assembly is connected to the lock sleeve (21) for clamping the lock head (22), the touch-and-release hook device (23) is arranged directly above the lock sleeve (21), the lifting device is connected to the lock sleeve (21) to drive the lock sleeve (21) to rise and fall, and when the hook-and-release hook assembly touches the touch-and-release hook device (23), the hook-and-release hook assembly automatically opens to make the lock head (22) fall off, and the counting device comprises a sensing device (5) and a digital display (3), and the sensing device (5), the digital display (3) The display (3), the lifting device and the control module are electrically connected, the digital display (3) is used to display digital values, the sensing device (5) is connected to the lock sleeve (21) and is used to sense the lock head (22), the sensing device (5) sends an electrical signal to the control module when it senses that the lock head (22) is in the lock sleeve (21) or falls off from the lock sleeve (21), and when the control module receives the electrical signal indicating that the lock head (22) falls off from the lock sleeve (21), it controls the lifting device to drive the lock sleeve (21) to descend and controls the digital value displayed on the digital display (3) to increase by 1, and when the control module receives the electrical signal indicating that the lock head (22) is in the lock sleeve (21), it controls the lifting device to drive the lock sleeve (21) to ascend.

2. A digital display fully automatic dynamic probe according to claim 1, characterized in that: The lifting device comprises a bracket, a forward and reverse motor (42) and a traction rope (43); the bracket comprises a bottom plate (411) and a vertical pole (412); the bottom plate (411) is connected to the bottom of the vertical pole (412); the top of the vertical pole (412) is connected to an extension rod (413) extending to one side; the forward and reverse motor (42) is arranged on the bottom plate (411); one end of the traction rope (43) is wound around the rotating shaft of the forward and reverse motor (42); the other end is connected to the locking sleeve (21) after passing over the vertical pole (412) and the extension rod (413); the touch unhooking device (23) is connected to the vertical pole (412); and the control module and the forward and reverse motor (42) are electrically connected to control the forward and reverse motor (42) to rotate forward or reverse to reel in or unreel the traction rope (43).

3. A digital display fully automatic dynamic probe according to claim 2, characterized in that: The bottom plate (411) and the extension rod (413) are respectively connected to opposite sides of the upper and lower ends of the vertical rod (412).

4. A digital display fully automatic dynamic probe according to claim 3, characterized in that: The forward and reverse motor (42) is arranged on an edge of the bottom plate (411) away from the vertical pole (412).

5. A digital display fully automatic dynamic probe according to claim 2, characterized in that: The bottom of the bottom plate (411) is provided with moving wheels (414).

6. A digital display fully automatic dynamic probe according to claim 2, characterized in that: A fixed pulley (415) is provided at the top end of the vertical pole (412) and the end of the extension rod (413), and the traction rope (43) is connected to a pulley groove of the fixed pulley (415).

7. A digital display fully automatic dynamic probe according to claim 2, characterized in that: The lock sleeve (21) is connected to a lifting ring (211), one end of the traction rope (43) is connected to the lifting ring (211), a vertical through hole (212) is provided in the middle of the lock sleeve (21), and slots (213) that horizontally penetrate the lock sleeve (21) are provided on both sides of the through hole (212), the lock head (22) comprises a clamping portion (221) and a connecting portion (222) connected below the clamping portion (221), the hammer (1) is connected to the bottom of the connecting portion (222), the side wall of the clamping portion (221) is an inclined surface and the bottom is a horizontal surface, the hook and unhook assembly comprises a latch (241), a lever (242) and a reset spring (243), the latch (241) is slidably inserted in the slot (2 13), one end of which extends into the through hole (212) for contacting the bottom of the clamping portion (221), and the other end extends to the outside of the lock sleeve (21); the lever (242) is hinged on the lock sleeve (21) to form a fulcrum (244), and the lower end of which is hinged to one end of the bolt (241) extending to the outside of the lock sleeve (21); the upper end of the lever (242) extends between the touch-unhooking device (23) and the lock sleeve (21); when the upper end of the lever (242) approaches the lock sleeve (21), the lever (242) rotates around the fulcrum (244) so ​​that its lower end is away from the lock sleeve (21) and the bolt (241) is drawn outward along the slot (213); and the return spring (243) is connected between the bolt (241) and the lock sleeve (21).

8. A digital display fully automatic dynamic probe according to claim 7, characterized in that: The clamping portion (221) is conical or truncated cone-shaped.

9. A digital display fully automatic dynamic probe according to claim 7, characterized in that: A fulcrum moving groove (245) is provided at a position on the lever (242) where it is hinged to the lock sleeve (21), and a hinge shaft at which the lever (242) and the lock sleeve (21) are hinged is slidably connected in the fulcrum moving groove (245).

10. A digital display fully automatic dynamic probe according to claim 7, characterized in that: The sensing device (5) comprises a box body (51), a push rod (52), and a tensioning spring (53); the box body (51) is arranged on a side wall of a lock sleeve (21); a plug hole that horizontally passes through the lock sleeve (21) is provided on the side wall of the lock sleeve (21); one end of the push rod (52) is movably inserted into the box body (51); the other end is movably inserted into the plug hole and the end is used to abut against the inclined side wall of the clamping portion (221); a contact A (511), a contact B (512), and a contact C (513) that are electrically connected to the control module are provided in the box body (51); the contacts A (511), B (512), and C (513) are arranged equidistantly in a direction from away from the lock sleeve (21) to close to the lock sleeve (21); the push rod (52) is provided with a conductive portion (521); the tensioning spring (53) is connected between the box body (51) and the push rod; The ends of the rod (52) are used to push the push rod (52) toward a side close to the lock sleeve (21) so that the conductive part (521) is connected to the contact B (512) and the contact C (513). When the lock head (22) is clamped in the lock sleeve (21), the inclined side wall of the clamping part (221) pushes the push rod (52) to squeeze the tension spring (53) so that the conductive part (521) is connected to the contact A (511) and the contact B (512). When the conductive part (521) is connected to the contact B (512) and the contact C (513), the control module receives an electrical signal to control the lifting device to drive the lock sleeve (21) to descend and controls the digital value displayed on the digital display (3) to increase by 1. When the conductive part (521) is connected to the contact A (511) and the contact B (512), the control module receives an electrical signal to control the lifting device to drive the lock sleeve (21) to ascend.

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