A weighable steel bar clamp

Abstract

The present invention relates to a material transfer and transportation device, specifically a weighable steel bar clamp, belonging to the technical field of construction machinery and equipment. It comprises at least two oppositely arranged scissor-type clamps and a connecting beam device for connecting the scissor-type clamps transversely; the scissor-type clamp comprises an inner clamp arm and an outer clamp arm hinged by a main shaft; the connecting beam device comprises three connecting beam bodies and a lifting device fixed in the middle of the connecting beam body; the ends of the two outer connecting beam bodies are hinged with the ends of the inner clamp arm and the outer clamp arm respectively by the inner clamp arm secondary shaft and the outer clamp arm secondary shaft; the end of the middle connecting beam body is hinged with the middle of the outer clamp arm and the inner clamp arm by a main shaft; the lifting device has a weighing strain gauge, and a weight sensor and a posture sensor are installed on the weighing strain gauge. The present invention has a simple structure and is easy to operate. It can accurately manage the quantity changes of steel bar materials in each stage, can facilitate the transportation of steel bars, and can solve the needs of weighing, metering, and convenient operation during the transportation of steel bars.

Description

Technical Field

[0001] The invention relates to a material transfer and transportation device, in particular to a weighable steel bar clamp, belonging to the technical field of construction machinery and equipment. Background Art

[0002] Rebar is an important material in construction and an important management object in the material management process of construction projects. From entering the construction site to becoming a complete part of the structure, the rebar has gone through the process of on-site acceptance, storage and custody, issuance and use supervision. After the construction project is completed, the remaining rebar will participate in the material turnover process. Usually, the inventory, inventory and accounting management of rebars in the entire management process often rely on manual counting. In the process of manual counting, the problem of inequality between the inventory quantity of materials and the accounting quantity of materials can usually only be found in the material turnover stage, and the link causing the problem cannot be found. At the same time, there are various problems and hidden dangers in the transportation and hoisting of rebars in various processes, such as the inability of hoisting tools to accurately weigh the weight of rebars, the need for multiple people to participate in the hoisting and unloading process, and the inconvenience of safety hazards. Summary of the invention

[0003] The purpose of the present invention is to provide a weighable steel bar clamp to solve the above technical problems.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A weighable steel bar clamp comprises at least two oppositely arranged scissor-type clamps and a connecting beam device for transversely connecting the scissor-type clamps; the scissor-type clamp comprises an inner clamp arm and an outer clamp arm hinged by a main shaft; the connecting beam device comprises three connecting beam bodies and a lifting device fixed at the middle position of the connecting beam bodies; the ends of the two outer connecting beam bodies are hinged to the ends of the inner clamp arm and the outer clamp arm respectively by the inner clamp arm secondary shaft and the outer clamp arm secondary shaft; the end of the middle connecting beam body is hinged to the middle part of the outer clamp arm and the inner clamp arm by a main shaft; the lifting device has a weighing strain gauge, and a weight sensor and a posture sensor are installed on the weighing strain gauge.

[0006] A further improvement of the technical solution of the present invention is that the lifting device includes a lifting lug plate, a lifting shaft and a weighing strain gauge, the lifting shaft connects the two lifting lug plates through the holes on the lifting lug plates, and the weighing strain gauge is installed on the lifting lug plate and one end is connected to the lifting shaft.

[0007] A further improvement of the technical solution of the present invention is that the inner caliper arm is hingedly arranged in the middle position of the outer caliper arm using a main shaft, and the inner end of the main shaft is connected to the connecting beam body through a shaft end chuck; the inner caliper arm secondary shaft is installed at the top end of the inner caliper arm, and the inner end is connected to the connecting beam body through a shaft end chuck; the outer caliper arm secondary shaft is installed at the top end of the outer caliper arm, and the inner end is connected to the connecting beam body through a shaft end chuck.

[0008] A further improvement of the technical solution of the present invention is that the outer clamp arm and the inner clamp arm have the same shape, and the outer clamp arm includes an integrally formed connecting arm and an arc-shaped clamp.

[0009] A further improvement of the technical solution of the present invention is that an inner limit block for limiting the position of the inner clamp arm is fixedly set on the outer side of the connecting arm of the outer clamp arm, and an outer limit block for limiting the position of the inner clamp arm is fixedly set on the outer side of the arc clamp of the outer clamp arm.

[0010] A further improvement of the technical solution of the present invention is that a protective plate is fixedly installed on the inner side of the clamp jaws of the outer clamp arm and the inner clamp arm.

[0011] A further improvement of the technical solution of the present invention is that the protection plate is made of soft wear-resistant material.

[0012] Due to the adoption of the above technical solution, the technical effects achieved by the present invention are as follows:

[0013] 1. The present invention solves the problem of weighing during the transportation of steel bars by adding weight sensors and posture sensors

[0014] 2. The present invention uses a mechanical device for automatic clamping without a power source to solve the waste of manpower required to manually tie the steel bars to the hook during the steel bar transportation process, and reduces the potential risks during the lifting process

[0015] 3. The present invention protects the steel bars from secondary damage during the hoisting process by installing a protective plate.

[0016] 4. The present invention can protect the steel bars and the steel bar clamp itself by providing the inner limit block and the outer limit block.

[0017] 5. The connecting beam device of the present invention is provided with three connecting beam bodies. Through the hinged connection of the three connecting beam bodies and the scissor-type clamp, the overall structural stability of the steel bar clamp can be ensured, and the weighing in different states is realized by changing the connection between the hook and the three connecting beam bodies, thereby obtaining the net weight of the hoisted steel bars.

[0018] 6. The invention has a simple structure and is easy to operate. It can accurately manage the changes in the quantity of steel bar materials at each stage, and can facilitate the transportation of steel bars. It also meets the requirements of weighing, measuring, convenient operation, and easy troubleshooting of hidden dangers during the transportation of steel bars. The weighable steel bar clamp has a simple structure, simple operation, and is easy to maintain. It can accurately measure the weight of the transported steel bars through its own weight sensor and posture sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural diagram of the weighable steel bar clamp of the present invention in an unloaded state;

[0020] Figure 2 It is a front view of the weighable steel bar clamp of the present invention in an unloaded state;

[0021] Figure 3 It is a three-dimensional structural diagram of the weighable steel bar clamp of the present invention in the transfer and transportation state;

[0022] Figure 4 This is a front view of the weighable steel bar clamp of the present invention in the transfer and transportation state;

[0023] Among them, 1. connecting beam device, 11. shaft end chuck, 12. outer connecting beam lifting device, 13. inner connecting beam lifting device, 14. weighing strain gauge, 15. connecting beam body, 16. lifting lug plate, 17. lifting shaft;

[0024] 2. Scissor-type clamp pliers, 21. inner clamp arm secondary shaft, 22. inner clamp arm, 23. outer limit block, 24. main shaft, 25. inner limit block, 26. outer clamp arm, 27. outer clamp arm secondary shaft, 28. protection plate. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0026] The invention relates to a weighable steel bar clamp, which can weigh the steel bar while clamping it, and is mainly used on construction sites.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the steel bar clamp comprises at least two scissor-type clamp jaws 2 and a connecting beam device 1. The scissor-type clamp jaws 2 are arranged opposite to each other and connected together using a transverse connecting beam device 1.

[0028] The connecting beam device 1 of the present invention comprises three connecting beam bodies 15 and a lifting device fixed in the middle of the connecting beam body 15. The lifting device is used to connect with the hook, and a weighing strain gauge 14 is arranged on the lifting device, and a weight sensor and a posture sensor are installed on the weighing strain gauge 14. The three connecting beam bodies 15 are arranged in parallel, one of which is located in the middle, and the other two are located on both sides.

[0029] The present invention uses a scissor-type clamp 2, which is similar to the structure of scissors. The scissor-type clamp 2 includes an inner clamp arm 22 and an outer clamp arm 26 hinged by a main shaft 24. The middle parts of the inner clamp arm 22 and the outer clamp arm 26 are hingedly connected by the main shaft 24, and the main shaft 24 is also fixedly connected to the connecting beam body 15 in the middle position. The ends of the inner clamp arm 22 and the outer clamp arm 26 are respectively hingedly connected to the ends of the two connecting beam bodies 15 located on the outside by the inner clamp arm secondary shaft 21 and the outer clamp arm secondary shaft 27, and the inner clamp arm 22 and the outer clamp arm 26 are driven to rotate by the connecting beam body 15. The outer clamp arm 26 and the inner clamp arm 22 cooperate to grab the steel bar. The outer clamp arm 26 and the inner clamp arm 22 have the same shape, and the outer clamp arm 26 includes an integrally formed connecting arm and an arc clamp.

[0030] In a specific implementation, the outer clamp arm 26 is provided with two parts, and the inner clamp arm 22 is located in the middle of the outer clamp arm 26. The main shaft 24, the outer clamp arm secondary shaft 27 and the inner clamp arm secondary shaft 21 are all connected to the connecting beam body 15 using the shaft end chuck 11. The inner end of the main shaft 24 is connected to the connecting beam body 15 through the shaft end chuck 11; the inner clamp arm secondary shaft 21 is installed at the top end of the inner clamp arm 22, and the inner end is connected to the connecting beam body 15 through the shaft end chuck 11; the outer clamp arm secondary shaft 27 is installed at the top end of the outer clamp arm 26, and the inner end is connected to the connecting beam body 15 through the shaft end chuck 11. The main shaft 24, the outer clamp arm secondary shaft 27 and the inner clamp arm secondary shaft 21 can also be directly hinged to the connecting beam body 15,

[0031] The lifting device in the present invention includes a lug plate 16, a hanging shaft 17 and a weighing strain gauge 14. The lug plate 16 is fixed on the connecting beam body 1, the hanging shaft 17 connects two lug plates 16 through the holes on the lug plate 16, and the weighing strain gauge 14 is installed on the lug plate 16 and one end is connected to the hanging shaft 17. For the convenience of description, the lifting device on the connecting beam body 15 in the middle is called the inner connecting beam lifting device 13, and the lifting devices on the connecting beam bodies 15 on both sides are called the outer connecting beam lifting devices 12. The structures of the inner connecting beam lifting device 13 and the outer connecting beam lifting device 12 are the same.

[0032] Furthermore, an inner limit block 25 for limiting the position of the inner clamp arm 22 is fixedly arranged on the outer side of the connecting arm of the outer clamp arm 26. When the number of steel bars to be suspended is small, in order to prevent the steel bars from being clamped, the inner clamp arm 22 will contact the inner limit block 25 of the outer clamp arm 26. Figure 3 An outer stopper 23 for limiting the position of the inner clamp arm 22 is fixedly arranged on the outer side of the arc-shaped clamp of the outer clamp arm 26, and the outer stopper 23 prevents the upper end of the inner clamp arm 22 from excessively moving downward.

[0033] Furthermore, a protection plate 28 is fixedly installed on the inner side of the clamp jaws of the outer clamp arm 26 and the inner clamp arm 22 , and the protection plate 28 is made of a soft wear-resistant material.

[0034] In actual use, the use process of the steel bar clamp is as follows: the steel bar clamp is placed in the placement area. Figure 1 and Figure 2 The scissor-type clamp 2 is in an unloaded state, and the opening size of the scissor-type clamp 2 is the unloaded size. The inner connecting beam lifting device 13 is driven by the hook, and the scissor-type clamp 2 is lifted synchronously as a whole, and the clamp opening size remains unchanged. At this time, the weight sensor and the attitude sensor on the weighing strain gauge 14 of the inner connecting beam lifting device 13 will calculate the deadweight of the steel bar clamp according to the current stress state of the lifting shaft 17, and store it as the reset value A.

[0035] When the lifting device moves to the top of the steel bar, and makes the connecting beam body 15 and the steel bar in the same direction. At this time, put down the steel bar clamp and detach the hook from the inner connecting beam lifting device 13. Then the hook is connected to the outer connecting beam lifting device 12 at the same time through a sling, a chain and other devices. When the outer connecting beam lifting device 12 is lifted at the same time, the inner clamp arm 22 and the outer clamp arm 26 will be driven to continuously shrink the jaws of the scissor-type clamp 2 until the steel bar is clamped. After the steel bar is clamped, the hook continues to lift. At this time, the scissor-type clamp 2 will drive the steel bar to move with the hook. At this time, the weighing strain gauge 14 of the outer connecting beam lifting device 12 will calculate the total weight B of the lifted steel bar and the clamp through the current force and posture of the outer connecting beam lifting device 12. At this time, the total weight B of the lifted steel bar and the clamp minus the reset value A is the weight of the lifted steel bar.

[0036] When the steel bar clamp and the steel bar are moved to the target area, the clamp and the steel bar will fall down at the same time when the hook is lowered. Due to the deadweight of the two outer connecting beam devices 1, the jaws of the scissor clamp 2 will continue to increase as the hook continues to fall after the steel bar falls to the ground, until the inner clamp arm 22 contacts the outer limit block 23 of the outer clamp arm 26. At this time, the hook is connected to the inner connecting beam lifting device 13, and the clamp can be lifted and transferred to the storage area, or the steel bar can be lifted again.

[0037] The present invention can conveniently realize automatic clamping and releasing of steel bars without a power source. The steel bar clamp has the function of weighing and measuring by using a weight sensor and a posture sensor, and can weigh the steel bars while hoisting them, thereby improving work efficiency and meeting the refined requirements of construction management.

Claims

1. A weighable steel bar clamp, characterized in that: The invention comprises at least two scissor-type clamps (2) arranged opposite to each other and a connecting beam device (1) for transversely connecting the scissor-type clamps (2); the scissor-type clamps (2) comprise an inner clamp arm (22) and an outer clamp arm (26) hingedly connected by a main shaft (24); the connecting beam device (1) comprises three connecting beam bodies (15) and a lifting device fixed at the middle position of each connecting beam body (15); the three connecting beam bodies (15) are arranged in parallel, one of which is located in the middle and the other two are located at the middle. The lifting device is located on both sides; the ends of the two outer connecting beams (15) are respectively hinged to the ends of the inner clamp arm (22) and the outer clamp arm (26) by using the inner clamp arm secondary shaft (21) and the outer clamp arm secondary shaft (27); the end of the middle connecting beam (15) is hinged to the middle of the outer clamp arm (26) and the inner clamp arm (22) by using the main shaft (24); the lifting device has a weighing strain gauge (14), and a weight sensor and a posture sensor are installed on the weighing strain gauge (14); the lifting device includes a lifting device; The lug plate (16), the suspension shaft (17) and the weighing strain gauge (14), the suspension shaft (17) connects the two lug plates (16) through the holes on the lug plates (16), the weighing strain gauge (14) is installed on the lug plates (16) and one end is connected to the suspension shaft (17); the lifting device on the middle connecting beam body (15) is the inner connecting beam lifting device (13), and the lifting devices on the connecting beam bodies (15) on both sides are the outer connecting beam lifting devices (12); the inner clamp The arm (22) is hingedly arranged at the middle position of the outer clamp arm (26) using a main shaft (24), and the inner end of the main shaft (24) is connected to the connecting beam body (15) through an axis end chuck (11); the inner clamp arm auxiliary shaft (21) is installed at the top end of the inner clamp arm (22), and the inner end is connected to the connecting beam body (15) through the axis end chuck (11); the outer clamp arm auxiliary shaft (27) is installed at the top end of the outer clamp arm (26), and the inner end is connected to the connecting beam body (15) through the axis end chuck (11); When the steel bar clamp is placed in the placement area, the scissor-type clamp (2) is in an unloaded state, and the opening size of the scissor-type clamp (2) is an unloaded size; the inner connecting beam lifting device (13) is driven by the hook, and the scissor-type clamp (2) is lifted synchronously as a whole, and the size of the clamp opening remains unchanged; at this time, the weight sensor and the attitude sensor on the weighing strain gauge (14) of the inner connecting beam lifting device (13) calculate the deadweight of the steel bar clamp according to the current stress state of the lifting shaft (17), and store it as a reset value A; When the lifting device moves to the top of the steel bar and makes the connecting beam body (15) and the steel bar in the same direction; at this time, the steel bar clamp is lowered and the hook is separated from the inner connecting beam lifting device (13); then the hook is connected to the outer connecting beam lifting device (12) through the lifting belt and chain at the same time, and when the outer connecting beam lifting device (12) is lifted at the same time, the inner clamp arm (22) and the outer clamp arm (26) are driven to continuously reduce the jaws of the scissor-type clamp pliers (2) until the steel bar is clamped; after the steel bar is clamped, the hook continues to be lifted; at this time, the scissor-type clamp pliers (2) will drive the steel bar to move with the hook; at this time, the weighing strain gauge (14) of the outer connecting beam lifting device (12) will calculate the total weight B of the lifted steel bar and the clamp through the current force and posture of the outer connecting beam lifting device (12); at this time, the total weight B of the lifted steel bar and the clamp minus the reset value A is the weight of the lifted steel bar.

2. A weighable steel bar clamp according to claim 1, characterized in that: The outer clamp arm (26) and the inner clamp arm (22) have the same shape, and the outer clamp arm (26) comprises an integrally formed connecting arm and an arc-shaped clamp.

3. The weighable steel bar clamp according to claim 2, characterized in that: An inner limit block (25) for limiting the position of the inner clamp arm (22) is fixedly arranged on the outer side of the connecting arm of the outer clamp arm (26), and an outer limit block (23) for limiting the position of the inner clamp arm (22) is fixedly arranged on the outer side of the arc-shaped clamp of the outer clamp arm (26).

4. The weighable steel bar clamp according to claim 1, characterized in that: A protection plate (28) is fixedly mounted on the inner sides of the clamp jaws of the outer clamp arm (26) and the inner clamp arm (22).

5. The weighable steel bar clamp according to claim 4, characterized in that: The protection plate (28) is made of soft wear-resistant material.

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