Water-stable core sample extraction device

Abstract

The utility model provides a water-stable core sample extracting device which comprises a mounting plate, a containing groove is formed in the mounting plate, and a grip is fixedly arranged at the upper end of the mounting plate; the clamping assembly comprises two clamping pieces arranged in a mirror image mode and a driving device located between the two clamping pieces and used for driving the clamping pieces to be close to or away from each other, the upper ends of the clamping pieces and the driving device are both located in the containing groove, and the clamping pieces are used for clamping water stable core samples; the self-locking device is arranged on the driving device, located in the mounting plate and used for limiting rotation of the driving device; the core sample is clamped and sampled through the two semicircular clamping plates which can be close to or away from each other, the clamping plates can be inserted along the hole wall during sampling, the core sample is wrapped between the two clamping plates, the clamping plates are driven by the control driving device to clamp the core sample in the hole, and then the core sample in the hole can be completely taken out; the problems that time and labor are wasted when a constructor takes out a core sample, the core sample even slides down in the sampling process, and the core sample is damaged are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of road engineering, in particular to a water-stable core sample extraction device. Background Art

[0002] In road construction, in order to understand the internal conditions of the road, it is often necessary to drill holes and take core samples to measure data such as the thickness of the pavement structure layer, construction quality, and compaction degree.

[0003] For example, the Chinese utility model with publication number CN211772658U discloses "a device for extracting core samples from cement-stabilized crushed stone base". When lifting the core sample, the small ring arm and the large ring arm are arranged into a circle and put on the core sample. Then the tester holds the handle and pulls it upward. Under the action of this force, the large ring arm and the small ring arm rotate, cross into an X shape and stick to the core sample. Continue to pull upward with force, and the static friction between the large ring arm and the small ring arm causes the core sample to rise.

[0004] However, since the above-mentioned device extracts the core sample by relying on the static friction between the large ring arm, the small ring arm and the core sample, and the core sample is too heavy, if the static friction is less than the weight of the core sample, it will cause sampling failure, and the core sample may fall and be damaged during the lifting process due to unstable friction. Utility Model Content

[0005] In view of the deficiencies existing in the prior art, the utility model provides a water-stable core sample extraction device, which solves the problem that the traditional extraction device in the prior art is unstable in extracting core samples, resulting in construction workers wasting time and effort in the process of removing the core samples, and even causing the core samples to slip during the sampling process, causing damage to the core samples.

[0006] According to an embodiment of the utility model, a water-stable core sample extraction device includes a mounting plate with a storage groove provided inside, and a handle fixedly provided on the upper end of the mounting plate; a clamping assembly includes two mirror-image clamping members and a driving device located between the two clamping members for driving the clamping members to move closer to or away from each other, the upper end of the clamping member and the driving device are both located in the storage groove, and the clamping member is used to clamp the water-stable core sample; a self-locking device is arranged on the driving device, located in the mounting plate, and is used to limit the rotation of the driving device.

[0007] Preferably, each clamping member includes a movable block, which is located in the storage groove and can move inside the groove. A connecting arm is fixedly provided at the lower end of the movable block, and a splint is provided at the lower end of the connecting arm. The splint is semicircular in shape, wherein each movable block is inclined with a T-shaped slot.

[0008] Preferably, the driving device includes a screw rod rotatably arranged in the mounting plate, and a driving block threadably connected to the screw rod, and T-blocks are arranged at both ends of the driving block. The two T-blocks are respectively located in corresponding T-slots and can slide in their T-slots.

[0009] Preferably, the self-locking device includes a ratchet fixedly mounted on the screw rod, a groove is provided on the upper end of the mounting plate, the ratchet is located in the groove, two pawls and a limit block are rotatably arranged in the groove, a return spring is provided on the two pawls, one end of the two return springs abuts against the groove wall, the limit block is located between the two pawls, wherein any pawl abuts against the limit block, and the pawl that does not abut against the limit block is stuck on the ratchet under the elastic force of the return spring.

[0010] Preferably, a control arm is fixedly connected to the limit block, and the control arm is located outside the mounting plate.

[0011] Preferably, an operating shaft is provided at the upper end of the screw rod, the operating shaft is located outside the mounting plate, and anti-slip grooves are provided on the operating shaft.

[0012] Preferably, a rubber pad is provided on the inner curved surface of each clamping plate.

[0013] Preferably, a rubber sleeve is provided on the handle.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the core sample is clamped and sampled by two semicircular arc-shaped clamping plates which can be moved closer to or further away from each other; when sampling, the clamping plates can be inserted along the hole wall to wrap the core sample between the two clamping plates; and the core sample in the hole is clamped by controlling the driving device to drive the clamping plates, so that the core sample in the hole can be completely taken out; in the process of clamping the core sample, the staff does not need to continuously exert force to control the driving device, thereby reducing the work intensity of the staff; and at the same time, with the setting of the self-locking device, the stability in the sampling process is further guaranteed, and the two clamping plates clamping the core sample can be limited and fixed to prevent them from loosening by themselves, reducing the clamping force, losing the clamping force on the core sample, causing it to fall and cause damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the utility model.

[0016] Figure 2 The figure is a schematic diagram of the explosion structure of an embodiment of the utility model.

[0017] Figure 3 It is a schematic diagram of the structure of the clamping assembly in the embodiment of the utility model.

[0018] Figure 4 It is a structural schematic diagram of the self-locking device in the embodiment of the utility model.

[0019] Figure 5 for Figure 4Magnified view of area A.

[0020] In the above drawings: 1. Mounting plate; 101. Storage slot; 102. Sink; 2. Handle; 201. Rubber sleeve; 3. Movable block; 301. Connecting arm; 302. T-slot; 303. Driving block; 304. Operating shaft; 305. Screw rod; 306. T-block; 5. Clamp; 501. Rubber pad; 6. Ratchet; 601. Paw; 602. Limit block; 603. Control arm; 604. Return spring. DETAILED DESCRIPTION

[0021] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] like Figures 1 to 5 As shown, an embodiment of the utility model proposes a water-stable core sample extraction device, which includes a mounting plate 1, a storage groove 101 is opened inside, and a handle 2 is fixedly arranged on the upper end of the mounting plate 1; a clamping assembly, including two mirror-arranged clamping members and a driving device located between the two clamping members for driving the clamping members to move closer to or away from each other, the upper end of the clamping member and the driving device are both located in the storage groove 101, and the clamping member is used to clamp the water-stable core sample; a self-locking device is arranged on the driving device, located in the mounting plate 1, and is used to limit the rotation of the driving device.

[0023] The detailed working process of this embodiment is as follows: the function of the handle 2 is to facilitate use. When in use, the core sample is clamped and sampled by two clamping members that can be moved closer to or farther away from each other. When sampling, the clamping member is inserted along the hole wall, and the core sample is wrapped between the two clamping members. The core sample in the hole is clamped by controlling the driving device to drive the clamping member, and the core sample in the hole can be completely taken out. At the same time, under the setting of the self-locking device, the stability during the sampling process is further guaranteed, and the two clamping members that clamp the core sample can be limited and fixed to prevent them from loosening by themselves.

[0024] like Figure 2 and Figure 3 As shown, each clamping member includes a movable block 3, which is located in the storage groove 101 and can move therein, a connecting arm 301 is fixedly provided at the lower end of the movable block 3, and a clamping plate 5 is provided at the lower end of the connecting arm 301, and the clamping plate 5 is semicircular, wherein each movable block 3 is inclined to open a T-slot 302.

[0025] The detailed working process of this embodiment is as follows: the two movable blocks 3 can move closer to or farther away from each other in the storage groove 101, and the movement trajectory of the two clamping plates 5 is driven by controlling the two movable blocks 3. The clamping plates 5 are semicircular in shape and can wrap the core sample, increase its contact surface, and improve friction.

[0026] like Figure 3As shown, the driving device includes a screw rod 305 rotatably arranged in the mounting plate 1, and a driving block 303 threadedly connected to the screw rod 305, and T-blocks 306 are arranged at both ends of the driving block 303. The two T-blocks 306 are respectively located in the corresponding T-slots 302 and can slide in their T-slots 302.

[0027] The detailed working process of this embodiment is as follows: when the screw rod 305 rotates, the driving block 303 can move up and down in the storage groove 101, and the T-blocks 306 at both ends of the driving block 303 are respectively located in the inclined T-slots 302 of the corresponding movable blocks 3. When the driving block 303 moves upward, the T-blocks 306 at both ends of the driving block 303 move upward in the T-slots 302, so that the two movable blocks 3 are close to each other, thereby clamping the two clamping plates 5. When the driving block 303 moves downward, the two movable blocks 3 move away from each other under the squeezing of the driving block 303, so that the two clamping plates 5 expand. The core sample is clamped by this principle.

[0028] like Figure 4 and Figure 5 As shown, the self-locking device includes a ratchet 6 fixedly arranged on the screw rod 305, a recessed groove 102 is opened at the upper end of the mounting plate 1, the ratchet 6 is located in the recessed groove 102, two pawls 601 and a limit block 602 are rotatably arranged in the recessed groove 102, and a return spring 604 is arranged on the two pawls 601, one end of the two return springs 604 abuts against the wall of the recessed groove 102, and the limit block 602 is located between the two pawls 601, wherein any pawl 601 abuts against the limit block 602, and the pawl 601 that does not abut against the limit block 602 is stuck on the ratchet 6 under the elastic force of the return spring 604.

[0029] The detailed working process of this embodiment is as follows: under the setting of the ratchet 6 and the two pawls 601, the ratchet 6 will have a pawl 601 stuck with it in any state, limiting the ratchet 6 in the clockwise or counterclockwise direction, so that the ratchet 6 can only rotate in one direction, thereby limiting the screw rod 305, and the limit block 602 is used to control the state of the two pawls 601, wherein, by controlling the limit block 602 to abut against one of the pawls 601, the pawl 601 abutting against the limit block 602 abuts away from the ratchet 6, and the pawl 601 not abutting against the limit block 602 is stuck on the ratchet 6, thereby limiting one rotation direction of the ratchet 6.

[0030] like Figure 5 As shown, a control arm 603 is fixedly connected to the limiting block 602 , and the control arm 603 is located outside the mounting plate 1 .

[0031] The detailed working process of this embodiment is as follows: the function of the control arm 603 is to control the limit block 602 in the sink 102 .

[0032] like Figure 3As shown, an operating shaft 304 is disposed at the upper end of the screw rod 305 . The operating shaft 304 is located outside the mounting plate 1 , and anti-slip grooves are disposed on the operating shaft 304 .

[0033] The detailed working process of this embodiment is as follows: the operating shaft 304 is used to control the screw rod 305 in the mounting plate 1, and the anti-slip pattern increases its friction for easy operation.

[0034] like Figure 2 As shown, a rubber pad 501 is disposed on the inner curved surface of each clamping plate 5 .

[0035] The detailed working process of this embodiment is as follows: the function of the rubber pad 501 is to increase the friction with the core sample and improve the stability.

[0036] like Figure 2 As shown, a rubber sleeve 201 is provided on the handle 2.

[0037] The detailed working process of this embodiment is as follows: the function of the rubber sleeve 201 is to improve the comfort of the handle 2.

[0038] The implementation principle of the embodiment of the present application is: first, operate the control arm 603 to control the limit block 602, control one of the pawls 601 to move away from the ratchet 6, so that the ratchet 6 can rotate, and then control the driving block 303 to move downward by rotating the operating shaft 304, and press against the two movable blocks 3, so that the two clamps 5 are expanded, and then the two expanded clamps 5 are inserted along the hole wall to wrap the core sample between the two clamps 5, and then the operating shaft 304 is rotated in the opposite direction, and the driving block 303 moves upward, so that the two clamps 5 clamp the sample core, and the core sample can be taken out.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A water-stable core sample extraction device, characterized in that: include: A mounting plate (1) having a storage groove (101) formed therein, and a handle (2) fixedly disposed on the upper end of the mounting plate (1); A clamping assembly, comprising two clamping members arranged in mirror images and a driving device located between the two clamping members for driving the clamping members to move closer to or away from each other, wherein the upper ends of the clamping members and the driving device are both located in the receiving groove (101), and the clamping members are used to clamp the water-stable core sample; A self-locking device is arranged on the driving device and is located inside the mounting plate (1) and is used to limit the rotation of the driving device.

2. A water-stable core sample extraction device according to claim 1, characterized in that: Each of the clamping members comprises a movable block (3), the movable block (3) being located in the receiving groove (101) and being movable therein, a connecting arm (301) being fixedly provided at the lower end of the movable block (3), a clamping plate (5) being provided at the lower end of the connecting arm (301), the clamping plate (5) being in a semicircular arc shape, wherein each of the movable blocks (3) is provided with a T-shaped slot (302) which is inclined.

3. A water-stable core sample extraction device according to claim 2, characterized in that: The driving device comprises a screw rod (305) rotatably arranged in the mounting plate (1), and a driving block (303) threadedly connected to the screw rod (305), and both ends of the driving block (303) are provided with T-shaped blocks (306), and the two T-shaped blocks (306) are respectively located in the corresponding T-shaped slots (302) and can slide in their T-shaped slots (302).

4. A water-stable core sample extraction device according to claim 3, characterized in that: The self-locking device comprises a ratchet (6) fixedly arranged on the screw rod (305), a recessed groove (102) is provided at the upper end of the mounting plate (1), the ratchet (6) is located in the recessed groove (102), two ratchet pawls (601) and a limit block (602) are rotatably arranged in the recessed groove (102), a return spring (604) is arranged on each of the two ratchet pawls (601), one end of each of the two return springs (604) is in contact with the wall of the recessed groove (102), the limit block (602) is located between the two ratchet pawls (601), wherein any of the ratchet pawls (601) is in contact with the limit block (602), and the ratchet pawl (601) that is not in contact with the limit block (602) is clamped on the ratchet (6) under the elastic force of the return spring (604).

5. A water-stable core sample extraction device according to claim 4, characterized in that: A control arm (603) is fixedly connected to the limit block (602), and the control arm (603) is located outside the mounting plate (1).

6. A water-stable core sample extraction device according to claim 3, characterized in that: An operating shaft (304) is provided at the upper end of the screw rod (305), the operating shaft (304) is located outside the mounting plate (1), and anti-slip grooves are provided on the operating shaft (304).

7. A water-stable core sample extraction device according to claim 2, characterized in that: The inner curved surface of each clamping plate (5) is provided with a rubber pad (501).

8. A water-stable core sample extraction device according to claim 1, characterized in that: The handle (2) is provided with a rubber sleeve (201).

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