Reinforcing steel bar drawing experiment device for constructional engineering quality detection

Abstract

The utility model discloses a reinforcing steel bar drawing experiment device for constructional engineering quality detection, which relates to the field of reinforcing steel bar drawing detection and comprises an air cylinder, the output end of the air cylinder is connected with a push rod, and the outer wall of the push rod is provided with a connecting block and a transmission mechanism arranged on the connecting block; the transmission mechanism comprises a limiting unit and a clamping unit; the limiting unit is used for limiting the movement of the clamping unit; and the clamping unit is used for clamping the reinforcing steel bars. According to the steel bar clamping device, the transmission mechanism is arranged, when a steel bar needs to be clamped, rotation limiting of the movable block and the positioning rod can be relieved by applying upward pulling force to the movable block, and therefore the movable block is rotated to transmit rotation force to the transmission rod through the positioning rod, and the rack is stressed to move axially to drive the clamping blocks to be close to each other to clamp the steel bar; and all the clamping blocks can be synchronously driven to move to clamp the reinforcing steel bars, so that the working efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of rebar pull-out testing, specifically a rebar pull-out test device for quality testing in building engineering. Background Technology

[0002] The rebar pull-out test is an on-site test of the anchoring force of the anchor body. Generally, 48-72 hours after the rebar is installed, a pull-out test is performed on the installed rebar using a tension gauge (jack). The test results can help to detect the quality of building projects.

[0003] In the prior art, when conducting pull-out tests on reinforcing bars, multiple clamping blocks are generally used to clamp the reinforcing bars in order to ensure the connection force. During use, it is necessary to manually clamp the clamping blocks to the reinforcing bars one by one. Based on this, in order to further improve work efficiency and facilitate quick clamping and release of the reinforcing bars, this utility model proposes a reinforcing bar pull-out test device for building engineering quality testing. Utility Model Content

[0004] The purpose of this invention is to provide a steel bar pull-out test device for quality testing in building engineering, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a steel bar pull-out test device for quality testing of building engineering, comprising a cylinder, a push rod connected to the output end of the cylinder, a connecting block installed on the outer wall of the push rod, and a transmission mechanism disposed on the connecting block;

[0006] The transmission mechanism includes a limiting unit and a clamping unit;

[0007] The limiting unit is used to limit the movement of the clamping unit;

[0008] The clamping unit is used to clamp the reinforcing bars.

[0009] As a further embodiment of this utility model: the limiting unit includes a movable block, a limiting block, and a limiting groove;

[0010] The movable block is vertically slidably installed on the inner wall of the connecting block and extends to the outside of the top of the connecting block. The movable block is used to synchronously drive the limiting block to rotate.

[0011] The limiting block is fixed to the outer wall of the movable block, and the limiting block is used to cooperate with the limiting groove to limit the rotation of the movable block;

[0012] The limiting groove is formed at the top of the connecting block, and the limiting groove is used to provide space for the entry of the limiting block.

[0013] As a further embodiment of this utility model: the clamping unit includes a positioning rod, a transmission rod, a rack, and a clamping block;

[0014] The positioning rod is fixed to the bottom end of the movable block and extends into the interior of the transmission rod. The positioning rod is used to transmit the rotational force from the movable block.

[0015] The transmission rod is rotatably mounted on the inner wall of the connecting block and extends to the outside of the connecting block. The transmission rod is used to drive the rack to move axially.

[0016] The rack is axially slidably mounted inside the connecting block, and the rack is used to synchronously drive the clamping block to move.

[0017] The clamping block is fixed to the outer wall of the rack and is used to provide clamping force for the reinforcing bar.

[0018] As a further improvement of this utility model: the outer wall of the clamping block is generally L-shaped, and the interior of the connecting block is formed with a sliding groove for axial movement of the rack.

[0019] As a further embodiment of this utility model: the outer wall of the transmission rod is fixed with a gear that meshes with the outer wall of the rack, and the rack is symmetrically distributed inside the connecting block with the gear on the outer wall of the transmission rod as the center.

[0020] As a further embodiment of this utility model: the number of connecting blocks is set to multiple, and the multiple connecting blocks are evenly distributed on the outer wall of the push rod, and the transmission rod is rotatably connected to the inner wall of multiple limiting grooves respectively.

[0021] As a further improvement of this utility model: the outer wall of the positioning rod is generally T-shaped, and the inside of the transmission rod is formed with a sliding groove for the vertical movement of the positioning rod.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] By setting up a transmission mechanism, when it is necessary to clamp the steel bars, the upward pulling force of the movable block can be applied to release the rotation limit of the movable block and the positioning rod. The rotation of the movable block will then transmit the rotational force to the transmission rod through the positioning rod, causing the rack to move axially under force, which will drive the clamping blocks to move closer to each other to clamp the steel bars. All clamping blocks can be moved simultaneously to clamp the steel bars, further improving work efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the transmission mechanism of this utility model;

[0026] Figure 3 This is a schematic diagram of the positioning rod installation structure of this utility model.

[0027] In the diagram: 1. Cylinder; 2. Push rod; 3. Connecting block; 4. Transmission mechanism; 401. Movable block; 402. Limiting block; 403. Limiting groove; 404. Positioning rod; 405. Transmission rod; 406. Rack; 407. Clamping block. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-3 In this embodiment of the utility model, a steel bar pull-out test device for quality testing of building engineering includes a cylinder 1, a push rod 2 connected to the output end of the cylinder 1, a connecting block 3 installed on the outer wall of the push rod 2, and a transmission mechanism 4 set on the connecting block 3.

[0030] The transmission mechanism 4 includes a limiting unit and a clamping unit;

[0031] The limiting unit is used to limit the movement of the clamping unit;

[0032] The clamping unit is used to clamp the reinforcing bars;

[0033] The limiting unit includes a movable block 401, a limiting block 402, and a limiting groove 403;

[0034] The movable block 401 is vertically slidably installed on the inner wall of the connecting block 3 and extends to the outside of the top of the connecting block 3. The movable block 401 is used to synchronously drive the limiting block 402 to rotate.

[0035] The limiting block 402 is fixed to the outer wall of the movable block 401. The limiting block 402 is used to cooperate with the limiting groove 403 to limit the rotation of the movable block 401.

[0036] A limiting groove 403 is formed at the top of the connecting block 3, and the limiting groove 403 is used to provide space for the entry of the limiting block 402;

[0037] The clamping unit includes a positioning rod 404, a transmission rod 405, a rack 406, and a clamping block 407;

[0038] The positioning rod 404 is fixed to the bottom end of the movable block 401 and extends into the interior of the transmission rod 405. The positioning rod 404 is used to transmit the rotational force from the movable block 401.

[0039] The transmission rod 405 is rotatably mounted on the inner wall of the connecting block 3 and extends to the outside of the connecting block 3. The transmission rod 405 is used to push the rack 406 to move axially.

[0040] The rack 406 is axially slidably installed inside the connecting block 3, and the rack 406 is used to synchronously drive the clamping block 407 to move.

[0041] The clamping block 407 is fixed to the outer wall of the rack 406 and is used to provide clamping force for the reinforcing bar.

[0042] In this embodiment: when a pull-out test is required on the reinforcing bar, the cylinder 1 is placed on a concrete platform with the reinforcing bar, and the reinforcing bar is placed between multiple clamping blocks 407. By applying an upward pulling force to the movable block 401, the limiting block 402 fixed on the outer wall of the movable block 401 is moved out of the inner side of the limiting groove 403, thereby releasing the rotation limit of the movable block 401. At this time, the movable block 401 can be rotated. The rotating movable block 401 synchronously drives the positioning rod 404 to rotate. The rotation of the "T"-shaped positioning rod 404 transmits the rotational force to the transmission rod 405, causing the gear fixed on the outer wall of the transmission rod 405 to rotate synchronously and provide power to the rack 4. The axial movement thrust of the rack 406 causes the rack 406 to move axially, synchronously driving the clamping blocks 407 connected to the end to move closer together, so that the inner side of the clamping block 407 contacts the outer wall of the steel bar. The rotating transmission rod 405 synchronously drives the gears inside the other connecting blocks 3 to rotate, thereby synchronously driving multiple clamping blocks 407 to move closer together to clamp the steel bar. After clamping is completed, by applying a downward thrust to the movable block 401, the limiting block 402 enters the inner side of the nearest limiting groove 403, thus completing the axial movement limitation of the clamping block 407. At this time, the cylinder 1 can be used to push the push rod 2 to move, thereby conducting a pull-out test on the steel bar.

[0043] Please refer to this carefully. Figures 1-3 The outer wall of the clamping block 407 is generally L-shaped. The inside of the connecting block 3 is formed with a groove for the axial movement of the rack 406. The outer wall of the transmission rod 405 is fixed with a gear that meshes with the outer wall of the rack 406. The rack 406 is symmetrically distributed inside the connecting block 3 with the gear on the outer wall of the transmission rod 405 as the center. There are multiple connecting blocks 3. Multiple connecting blocks 3 are evenly distributed on the outer wall of the push rod 2. The transmission rod 405 is rotatably connected to the inner wall of multiple limiting grooves 403. The outer wall of the positioning rod 404 is generally T-shaped. The inside of the transmission rod 405 is formed with a groove for the vertical movement of the positioning rod 404.

[0044] In this embodiment: This structure can limit the rotation of the movable block 401 under the action of the limiting groove 403 and the limiting block 402, but will not limit the vertical movement of the movable block 401. The rotational force from the movable block 401 is transmitted to the transmission rod 405 through the "T"-shaped positioning rod 404.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A steel bar pull-out test device for quality testing in construction engineering, comprising a cylinder (1), wherein a push rod (2) is connected to the output end of the cylinder (1), and a connecting block (3) is installed on the outer wall of the push rod (2), characterized in that, A transmission mechanism (4) is mounted on the connecting block (3); The transmission mechanism (4) includes a limiting unit and a clamping unit; The limiting unit is used to limit the movement of the clamping unit; The clamping unit is used to clamp the reinforcing bars.

2. The steel bar pull-out test device for quality testing in building engineering according to claim 1, characterized in that, The limiting unit includes a movable block (401), a limiting block (402), and a limiting groove (403); The movable block (401) is vertically slidably installed on the inner wall of the connecting block (3) and extends to the outside of the top of the connecting block (3). The movable block (401) is used to synchronously drive the limiting block (402) to rotate. The limiting block (402) is fixed to the outer wall of the movable block (401), and the limiting block (402) is used to cooperate with the limiting groove (403) to limit the rotation of the movable block (401); The limiting groove (403) is formed at the top of the connecting block (3), and the limiting groove (403) is used to provide space for the entry of the limiting block (402).

3. The steel bar pull-out test device for quality testing in building engineering according to claim 2, characterized in that, The clamping unit includes a positioning rod (404), a transmission rod (405), a rack (406), and a clamping block (407); The positioning rod (404) is fixed to the bottom end of the movable block (401) and extends into the interior of the transmission rod (405). The positioning rod (404) is used to transmit the rotational force from the movable block (401). The transmission rod (405) is rotatably mounted on the inner wall of the connecting block (3) and extends to the outside of the connecting block (3). The transmission rod (405) is used to push the rack (406) to move axially. The rack (406) is axially slidably installed inside the connecting block (3), and the rack (406) is used to synchronously drive the clamping block (407) to move; The clamping block (407) is fixed to the outer wall of the rack (406) and is used to provide clamping force for the reinforcing bar.

4. A steel bar pull-out test device for quality testing in building engineering according to claim 3, characterized in that, The outer wall of the clamping block (407) is generally L-shaped, and the interior of the connecting block (3) is formed with a groove for the axial movement of the rack (406).

5. A steel bar pull-out test device for quality testing in building engineering according to claim 3, characterized in that, The outer wall of the transmission rod (405) is fixed with a gear that meshes with the outer wall of the rack (406). The rack (406) is symmetrically distributed inside the connecting block (3) with the gear on the outer wall of the transmission rod (405) as the center.

6. A steel bar pull-out test device for quality testing in building engineering according to claim 3, characterized in that, The number of connecting blocks (3) is set to multiple, and the multiple connecting blocks (3) are evenly distributed on the outer wall of the push rod (2). The transmission rod (405) is rotatably connected to the inner wall of the multiple limiting grooves (403).

7. A steel bar pull-out test device for quality testing in building engineering according to claim 3, characterized in that, The outer wall of the positioning rod (404) is generally T-shaped, and the inside of the transmission rod (405) is formed with a groove for the vertical movement of the positioning rod (404).

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