Bending resistance detection device for door leaf reinforcing steel bar

Abstract

The utility model discloses an anti-bending detection device for door leaf reinforcing steel bars, which belongs to the technical field of anti-bending detection devices for reinforcing steel bars and comprises a base, a mounting frame is fixedly connected onto the base, a bending mechanism is arranged on the inner side of the mounting frame and comprises a pressing plate, and the top of the pressing plate is fixedly connected with the output end of a hydraulic cylinder. Connecting pieces are fixedly connected to two ends of the bottom of the pressing plate. The bending device has the beneficial effects that the bending mechanism, the pressure-bearing mechanisms and the transmission mechanism are arranged, the bending mechanism is provided with a plurality of bending cores of different specifications, the bending cores adapting to the diameter of the reinforcing steel bar can be switched at the same time by rotating the rotating blocks, the distance between the two pressure-bearing blocks is adjusted, and when bending resistance testing is conducted on the reinforcing steel bars of different specifications, the bending resistance of the reinforcing steel bar is greatly improved. The distance of the pressure-bearing blocks and the specification of the bent core are synchronously switched, the matching of the pressure-bearing distance of the reinforcing steel bar and the specification of the bent core is automatically realized, various detection conditions do not need to be manually adjusted according to the diameter of the reinforcing steel bar, the use is convenient, and the accuracy of bending resistance detection is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar bending resistance detection devices, in particular to a bending resistance detection device for door leaf steel bars. Background Technique

[0002] Steel bars refer to steel materials used in reinforced concrete and prestressed reinforced concrete. Their cross-section is circular and sometimes square with rounded corners. It includes plain round bars, ribbed bars, and twisted bars. Steel bars for reinforced concrete are straight or coiled steel bars used for reinforcement in reinforced concrete. Their shapes are divided into plain round bars and deformed bars. Door leaf steel bars belong to a type of steel bar. When processing door leaf steel bars, it is necessary to detect their bending resistance.

[0003] After searching the prior art, when detecting existing steel bars, for steel bars with different diameter specifications, workers need to use different bending cores to detect the bending resistance of the steel bars during detection. And when detecting the bending resistance of steel bars with different diameters, different support distances need to be set to obtain accurate bending resistance detection results. In the prior art, workers often need to replace the bending cores multiple times. And when the steel bar is placed in front of the pressure-bearing block, the distance of the pressure-bearing block also needs to be adjusted to adapt to the diameter of the steel bar. If the distance is too large or too small, it will affect the bending resistance detection result of the steel bar, which is inconvenient to use and affects the detection accuracy. Therefore, a bending resistance detection device for door leaf steel bars is needed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a bending resistance detection device for door leaf steel bars to solve the above problems.

[0005] The utility model realizes the above purpose through the following technical solutions:

[0006] A bending resistance detection device for door leaf steel bars includes a base. An installation frame is fixedly connected to the base. A hydraulic cylinder is fixedly installed on the installation frame. A bending mechanism is arranged inside the installation frame. The bending mechanism includes a pressing plate. The top of the pressing plate is fixedly connected to the output end of the hydraulic cylinder. Two connecting pieces are fixedly connected to both ends of the bottom of the pressing plate. A connecting shaft is slidably connected inside the connecting piece. A plurality of bending cores with different specifications are sleeved on the connecting shaft. The top of the bending core is fixedly connected to a pressing block. A pressure-bearing mechanism is arranged on the base. The pressure-bearing mechanism includes two relatively arranged pressure-bearing blocks. A transmission mechanism is arranged on the installation frame. The transmission mechanism is used to switch different bending cores according to the diameter of the steel bar and simultaneously adjust the relative distance of the pressure-bearing blocks.

[0007] Preferably, the transmission mechanism includes two rotating shafts. A belt is sleeved on the two rotating shafts. A rotating block is fixedly connected to the rotating shaft. A first bevel gear is fixedly connected to one rotating shaft. A second bevel gear meshes with the first bevel gear. A transmission lead screw is fixedly connected to the side of the second bevel gear. A sliding rod is threadedly connected to the transmission lead screw. A vertical chute is provided on the sliding rod. A sliding sleeve is slidably connected within the sliding rod. The sliding sleeve is fixedly connected to the connecting shaft.

[0008] Preferably, a vertical frame is fixedly connected to the top of the base. A guide rod is fixedly connected to the vertical frame. The sliding rod is slidably connected to the guide rod. The transmission lead screw is rotatably connected to the vertical frame.

[0009] Preferably, the pressure-bearing mechanism includes a set of symmetrically arranged sliding seats. A pressure-bearing block is fixedly connected to the top of the sliding seat. A bidirectional lead screw is threadedly connected to the sliding seat. Limiting blocks are rotatably connected to both ends of the bidirectional lead screw. The limiting blocks are fixedly connected to the top of the base. A central block is rotatably connected to the middle position of the bidirectional lead screw. The rotating shaft passes through the limiting block and is fixedly connected to the bidirectional lead screw.

[0010] Preferably, a limiting groove is formed on the pressure-bearing block.

[0011] Preferably, a plurality of clamping grooves are formed on the connecting shaft. A elastic ball assembly that cooperates with the clamping grooves is arranged within the connecting piece.

[0012] The beneficial effects are as follows: A bending mechanism, a pressure-bearing mechanism and a transmission mechanism are provided. A plurality of bending cores with different specifications are provided on the bending mechanism. By rotating the rotating block, the bending cores suitable for the diameter of the steel bar can be switched simultaneously, and the distance between the two pressure-bearing blocks can be adjusted. When performing bending tests on steel bars of different specifications, the distance between the pressure-bearing blocks and the specifications of the bending cores are synchronously switched, automatically realizing the matching of the pressure-bearing distance of the steel bar and the specifications of the bending cores. There is no need to manually adjust various detection conditions according to the diameter of the steel bar, which is convenient to use and improves the accuracy of the bending test.

[0013] The additional technical features and their advantages of the present invention will be more clearly described in the following description content, or can be understood through the specific practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific implementation manners, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings:

[0015] Figure 1 is a schematic diagram of a bending resistance detection device for a door leaf steel bar according to the present invention;

[0016] Figure 2 is another perspective schematic diagram of a bending resistance detection device for a door leaf steel bar according to the present invention;

[0017] Figure 3 It is a schematic diagram of the pressure-bearing mechanism of a bending resistance detection device for door leaf steel bars described in the present utility model;

[0018] Figure 4 It is a schematic diagram of the connection between the bending mechanism and the transmission mechanism of a bending resistance detection device for door leaf steel bars described in the present utility model;

[0019] Figure 5 It is a schematic diagram of the transmission mechanism of a bending resistance detection device for door leaf steel bars described in the present utility model;

[0020] Figure 6 It is a schematic diagram of the connection between the sliding rod and the bending mechanism of a bending resistance detection device for door leaf steel bars described in the present utility model;

[0021] Figure 7 It is a sectional view of the position of the connecting piece of a bending resistance detection device for door leaf steel bars described in the present utility model.

[0022] The description of the reference numerals is as follows: 101, base; 102, mounting frame; 103, hydraulic cylinder; 104, vertical frame; 201, pressing plate; 202, connecting piece; 203, connecting shaft; 204, bending core; 205, pressing block; 206, clamping groove; 207, elastic ball assembly; 301, sliding seat; 302, pressure-bearing block; 303, limiting groove; 304, bidirectional lead screw; 305, limiting block; 306, central block; 401, rotating shaft; 402, belt; 403, rotating block; 404, first bevel gear; 405, second bevel gear; 406, transmission lead screw; 407, sliding rod; 408, guiding rod; 409, sliding sleeve. Specific embodiments

[0023] 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.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and 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 therefore should not be construed as a limitation of the present utility model.

[0025] The present utility model will be further described below with reference to the accompanying drawings:

[0026] Such as Figure 1 — Figure 7As shown in the figure, a bending resistance detection device for door leaf steel bars includes a base 101. An installation frame 102 is connected to the base 101 by bolts. A hydraulic cylinder 103 is fixedly installed on the installation frame 102. A bending mechanism is arranged inside the installation frame 102. The bending mechanism includes a pressing plate 201. The top of the pressing plate 201 is connected to the output end of the hydraulic cylinder 103 by bolts. At both ends of the bottom of the pressing plate 201, connecting pieces 202 are connected by bolts. A connecting shaft 203 is slidably connected inside the connecting piece 202. A number of bending cores 204 of different specifications are sleeved on the connecting shaft 203. When detecting steel bars of different diameters, there is no need to disassemble and reinstall the bending cores 204 of different specifications, which facilitates the detection work. The top of the bending core 204 is connected to a pressing block 205 by bolts. A bearing mechanism is arranged on the base 101. The bearing mechanism includes two bearing blocks 302 arranged opposite to each other. A transmission mechanism is arranged on the installation frame 102. The transmission mechanism is used to switch different bending cores 204 according to the diameter of the steel bar and simultaneously adjust the relative distance of the bearing blocks 302.

[0027] In this embodiment, the transmission mechanism includes two rotating shafts 401. A belt 402 is sleeved on the two rotating shafts 401. A rotating block 403 is connected to the rotating shaft 401 by bolts. A first bevel gear 404 is connected to one rotating shaft 401 by bolts. A second bevel gear 405 is meshed with the first bevel gear 404. A transmission lead screw 406 is connected to the side of the second bevel gear 405 by bolts. A sliding rod 407 is threadedly connected to the transmission lead screw 406. A vertical sliding groove is arranged on the sliding rod 407. A sliding sleeve 409 is slidably connected inside the sliding rod 407. The sliding sleeve 409 is fixedly connected to the connecting shaft 203. The sliding sleeve 409 can slide up and down in the vertical sliding groove of the sliding rod 407. When the worker rotates the rotating block 403, the rotating block 403 drives the rotating shaft 401 to rotate, the rotating shaft 401 drives the first bevel gear 404 to rotate, the first bevel gear 404 drives the second bevel gear 405 to rotate, the second bevel gear 405 drives the transmission lead screw 406 to rotate, the transmission lead screw 406 drives the sliding rod 407 to translate, and the sliding rod 407 drives the connecting shaft 203 to slide relative to the connecting piece 202 through the sliding sleeve 409, so as to switch different bending cores 204.

[0028] In this embodiment, a vertical frame 104 is welded to the top of the base 101. A guide rod 408 is connected to the vertical frame 104 by bolts. The sliding rod 407 is slidably connected to the guide rod 408. The transmission lead screw 406 is rotatably connected to the vertical frame 104. The setting of the guide rod 408 is beneficial to improving the stability of the sliding rod 407 driving the connecting shaft 203 to move.

[0029] In this embodiment, the pressure-bearing mechanism includes a set of symmetrically arranged sliding seats 301. The pressure-bearing blocks 302 are bolted to the tops of the sliding seats 301. A bidirectional lead screw 304 is threadedly connected to the sliding seats 301. The two ends of the bidirectional lead screw 304 are rotatably connected to limit blocks 305. The limit blocks 305 are bolted to the top of the base 101. The middle position of the bidirectional lead screw 304 is connected to a central block 306 through a bearing. The rotating shaft 401 passes through the limit block 305 and is fixedly connected to the bidirectional lead screw 304. The rotating block 403 drives the rotating shaft 401 to rotate. Through the connection of the belt 402, the two rotating shafts 401 rotate synchronously, thereby driving the two bidirectional lead screws 304 to rotate, and adjusting the distance between the two pressure-bearing blocks 302 while switching the bending core 204.

[0030] In this embodiment, a limit groove 303 is provided on the pressure-bearing block 302. The steel bar to be detected is located in the limit groove 303, which prevents it from popping out during the bending resistance test and enhances safety.

[0031] In this embodiment, a number of clamping grooves 206 are provided on the connecting shaft 203. An elastic ball assembly 207 that cooperates with the clamping grooves 206 is arranged inside the connecting piece 202. The distance between adjacent clamping grooves 206 is the same as the width of the bending core 204. The elastic ball assembly 207 is provided to remind the staff that the connecting shaft 203 is in the appropriate position when the bending core 204 is switched.

[0032] Working principle: When the device is in use, the staff takes out the steel bar to be detected and rotates the rotating block 403 according to the diameter of the steel bar. The rotating block 403 drives the rotating shaft 401 to rotate. The rotating shaft 401 drives the first bevel gear 404 to rotate. The first bevel gear 404 drives the second bevel gear 405 to rotate. The second bevel gear 405 drives the transmission lead screw 406 to rotate. The transmission lead screw 406 drives the sliding rod 407 to translate. The sliding rod 407 drives the connecting shaft 203 to slide relative to the connecting piece 202 through the sliding sleeve 409, thereby switching different bending cores 204. When the required bending core 204 moves to directly above the limit groove 303, the elastic ball assembly 207 will pop into the corresponding clamping groove 206, and the staff can easily know that the switching is completed. While the rotating shaft 401 rotates, through the connection of the belt 402, the two rotating shafts 401 rotate synchronously, thereby driving the two bidirectional lead screws 304 to rotate, and adjusting the distance between the two pressure-bearing blocks 302 while switching the bending core 204. Place the steel bar on the pressure-bearing blocks 302, start the hydraulic cylinder 103 to press down, so that the pressing plate 201 presses down the bending core 204 through the pressing block 205 to perform a bending resistance test on the steel bar. When the device is in use, the staff does not need to replace the bending core 204 and does not need to adjust the distance between the two pressure-bearing blocks 302 according to the diameter of the steel bar, and can achieve the steel bar support distance required by the detection experiment, improving the accuracy of the bending resistance test.

[0033] The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A bending resistance detection device for door leaf steel bars, comprising a base (101), wherein a mounting frame (102) is fixedly connected to the base (101), and a hydraulic cylinder (103) is fixedly installed on the mounting frame (102), characterized in that: Inside the mounting frame (102), a bending mechanism is provided. The bending mechanism includes a pressing plate (201). The top of the pressing plate (201) is fixedly connected to the output end of the hydraulic cylinder (103). At both ends of the bottom of the pressing plate (201), connecting pieces (202) are fixedly connected. A connecting shaft (203) is slidably connected inside the connecting piece (202). A plurality of bending cores (204) of different specifications are sleeved on the connecting shaft (203). A pressing block (205) is fixedly connected to the top of the bending core (204). A bearing mechanism is provided on the base (101). The bearing mechanism includes two bearing blocks (302) arranged oppositely. A transmission mechanism is provided on the mounting frame (102). The transmission mechanism is used to switch different bending cores (204) according to the diameter of the steel bar and simultaneously adjust the relative distance between the bearing blocks (302).

2. The bending resistance detection device for the steel bars of a door leaf according to claim 1, wherein: The transmission mechanism includes two rotating shafts (401). A belt (402) is sleeved on the two rotating shafts (401). A rotating block (403) is fixedly connected to the rotating shaft (401). A first bevel gear (404) is fixedly connected to one of the rotating shafts (401). A second bevel gear (405) is meshed with the first bevel gear (404). A transmission lead screw (406) is fixedly connected to the side of the second bevel gear (405). A sliding rod (407) is threadedly connected to the transmission lead screw (406). A vertical sliding groove is provided on the sliding rod (407). A sliding sleeve (409) is slidably connected inside the sliding rod (407). The sliding sleeve (409) is fixedly connected to the connecting shaft (203).

3. The bending resistance detection device for the door leaf steel bars according to claim 2, characterized in that: A vertical frame (104) is fixedly connected to the top of the base (101). A guide rod (408) is fixedly connected to the vertical frame (104). The sliding rod (407) is slidably connected to the guide rod (408). The transmission lead screw (406) is rotatably connected to the vertical frame (104).

4. The bending resistance detection device for the door leaf steel bars according to claim 2, characterized in that: The bearing mechanism includes a set of symmetrically arranged sliding seats (301). The bearing block (302) is fixedly connected to the top of the sliding seat (301). A bidirectional lead screw (304) is threadedly connected to the sliding seat (301). Limiting blocks (305) are rotatably connected to both ends of the bidirectional lead screw (304). The limiting blocks (305) are fixedly connected to the top of the base (101). A central block (306) is rotatably connected to the middle position of the bidirectional lead screw (304). The rotating shaft (401) penetrates through the limiting block (305) and is fixedly connected to the bidirectional lead screw (304).

5. The bending resistance detection device for the door leaf steel bars according to claim 1, wherein: A limiting groove (303) is provided on the bearing block (302).

6. The bending resistance detection device for the door leaf steel bars according to claim 1, wherein: A plurality of clamping grooves (206) are provided on the connecting shaft (203). An elastic ball assembly (207) that cooperates with the clamping grooves (206) is arranged inside the connecting piece (202).

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