Multifunctional bolt tightening device

Abstract

The utility model relates to the technical field of tightening devices, and discloses a multifunctional bolt tightening device which comprises a fixing base plate, fixing holes are formed in the upper end and the lower end of the fixing base plate, bearings are arranged in the two sets of fixing holes, and the outer walls of the bearings are fixedly connected with the fixing holes. And a fixing piece is fixedly mounted on the inner wall of the bearing. The transmission rod is driven to rotate through the wrench, the two sets of belt wheels are further made to synchronously rotate through the synchronous belt, the two sets of belt wheels rotate to drive the bolt tightening head to rotate through the fixing piece, the bolt tightening head is made to tighten bolts, and compared with a traditional wrench tightening mode, the device can synchronously tighten the two sets of bolts, and the bolt tightening efficiency is improved. And the tightening amplitude is the same, it is ensured that the tightening torque of each bolt meets the standard requirement while it is ensured that a worker conducts tightening operation rapidly, and therefore the overall quality of mechanical assembly is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tightening devices, and more specifically, to a multifunctional bolt tightening device. Background Art

[0002] A bolt is a commonly used fastener, usually consisting of a head and a screw. The screw is screwed into the screw hole of the connected part by rotating the head, and the connected parts are tightly fitted with the help of pre-tightening force to achieve the purpose of connection or fixation.

[0003] During equipment maintenance or mechanical component assembly and adjustment, it is usually necessary to tighten the bolts to ensure that they reach the required preload, thereby ensuring the stability and functionality of the bolted connection. Tightening the bolts creates preload, which generates sufficient pressure between the contact surfaces of the connected parts, thereby transmitting lateral force or torque, enhancing the strength and safety of the connection. In addition, in situations where sealing is required, such as pressure pipes or pressure vessels, sufficient bolt preload can also provide an effective seal.

[0004] At present, when tightening bolts, in order to save time and effort, they are usually tightened by using a wrench. However, a wrench can only tighten a single bolt. When two bolts need to be tightened, they need to be tightened in batches, which makes the tightening operation frequent and cannot ensure that the pre-tightening force generated by tightening the two groups of bolts is the same, which makes them prone to loosening. Therefore, a device that can tighten the two groups of bolts synchronously is needed for improvement and optimization. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a multifunctional bolt tightening device, which has the advantages of synchronous tightening and high tightening efficiency.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a multifunctional bolt tightening device, comprising a fixed base plate, wherein fixing holes are formed at both upper and lower ends of the fixed base plate, bearings are provided inside two groups of the fixing holes, the outer walls of the bearings are fixedly connected to the fixing holes, a fixing piece is fixedly installed on the inner wall of the bearing, a bolt tightening head is fixedly installed on the rear end of the fixing piece, the bolt tightening head is located behind the fixed base plate, a pulley is fixedly installed on the front end of the fixing piece, and a transmission rod is fixedly installed on the front end of the pulley;

[0007] The two groups of pulleys are connected by synchronous belt transmission. A fixed rod is fixedly installed on the right side of the middle part of the fixed base plate. A rotating shaft is rotatably installed on the outer wall of the fixed rod, and a tensioning roller is fixedly installed on the outer wall of the rotating shaft.

[0008] As a preferred technical solution of the present invention, the outer wall of the tensioning roller and the outer wall of the synchronous belt abut against each other, and the tensioning roller squeezes the right side of the synchronous belt inward to ensure the tension of the synchronous belt.

[0009] As a preferred technical solution of the present invention, the two groups of transmission rods are both hexagonal cylinders, and the transmission rods can be connected to the wrench in a transmission manner.

[0010] As a preferred technical solution of the present invention, the fixing member is rotatably mounted inside the fixing hole via a bearing and is responsible for transmitting torque.

[0011] As a preferred technical solution of the present invention, the bolt tightening head is in the shape of an inner hexagon and is responsible for docking with the nut to achieve the tightening function.

[0012] As a preferred technical solution of the present invention, the two groups of pulleys are of the same model and size, thereby achieving synchronous transmission of torque.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The utility model drives the transmission rod to rotate through the wrench, further making the two sets of pulleys rotate synchronously through the synchronous belt, and the rotation of the two sets of pulleys will drive the bolt tightening head to rotate through the fixing part, so that the bolt tightening head tightens the bolt. Compared with the traditional wrench tightening method, the device can tighten the two sets of bolts synchronously, and the tightening amplitude is also the same, ensuring that the staff can perform the tightening operation quickly while also ensuring that the tightening torque of each bolt meets the standard requirements, thereby improving the overall quality of mechanical assembly.

[0015] 2. The utility model ensures the tension of the synchronous belt by setting a tensioning roller, further avoiding poor engagement caused by loosening of the synchronous belt. Compared with the traditional tightening device, the device ensures that the rotation amplitude of the tightening heads of the two sets of bolts is the same through the setting of the synchronous belt. At this time, the pre-tightening force of the two sets of bolts is also the same, reducing the risk of bolt loosening and ensuring the stability and safety of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the back structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the pulley structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the synchronous belt of the utility model;

[0020] Figure 5 This is a schematic diagram of the fixing hole structure of the utility model.

[0021] In the figure: 1. Fixed base plate; 2. Fixed hole; 3. Fixed rod; 4. Rotating shaft; 5. Tensioning roller; 6. Bearing; 7. Bolt tightening head; 8. Fixed part; 9. Pulley; 10. Drive rod; 11. Synchronous belt. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figures 1 to 5 As shown, the utility model provides a multifunctional bolt tightening device, including a fixed base plate 1, wherein fixing holes 2 are formed at both upper and lower ends of the fixed base plate 1, bearings 6 are provided inside the two groups of fixing holes 2, the outer wall of the bearing 6 is fixedly connected to the fixing hole 2, the inner wall of the bearing 6 is fixedly installed with a fixing member 8, the rear end of the fixing member 8 is fixedly installed with a bolt tightening head 7, the bolt tightening head 7 is located behind the fixed base plate 1, the front end of the fixing member 8 is fixedly installed with a pulley 9, and the front end of the pulley 9 is fixedly installed with a transmission rod 10;

[0024] The two groups of pulleys 9 are connected by a synchronous belt 11. A fixed rod 3 is fixedly installed on the right side of the middle of the fixed base plate 1. A rotating shaft 4 is rotatably installed on the outer wall of the fixed rod 3. A tensioning roller 5 is fixedly installed on the outer wall of the rotating shaft 4.

[0025] When it is necessary to tighten the bolts, the staff will sleeve the two sets of bolt tightening heads 7 of the device on the outer wall of the nut of the bolt, and then hold the fixed base plate 1 with one hand to keep it stable, and use the other hand to hold the wrench to rotate any set of transmission rods 10. The rotation of the transmission rod 10 will drive the pulley 9 to rotate. However, at this time, the two sets of pulleys 9 are connected by a synchronous belt 11. Furthermore, since the two sets of pulleys 9 are of the same size, the rotation amplitude of the two sets of pulleys 9 is also the same. When the pulley 9 rotates, The pulley 9 will drive the fixing part 8 to rotate, and the fixing part 8 will drive the bolt tightening head 7 to rotate. Further, the two sets of bolt tightening heads 7 will rotate synchronously to tighten the bolts. It is worth noting that when the two sets of pulleys 9 rotate, the tensioning roller 5 and the synchronous belt 11 abut against each other, so that the tensioning roller 5 also rotates following the movement of the synchronous belt 11, and the tensioning roller 5 squeezes the synchronous belt 11 inward to ensure the tension of the synchronous belt 11, avoid poor engagement caused by slackness of the synchronous belt 11, and ensure the synchronization function of the synchronous belt 11.

[0026] The transmission rod 10 is driven to rotate by the wrench, and the two sets of pulleys 9 are further rotated synchronously through the synchronous belt 11. The rotation of the two sets of pulleys 9 drives the bolt tightening head 7 to rotate through the fixing member 8, so that the bolt tightening head 7 tightens the bolt. Compared with the traditional wrench tightening method, the device can tighten the two sets of bolts synchronously, and the tightening amplitude is also the same, ensuring that the staff can perform the tightening operation quickly while also ensuring that the tightening torque of each bolt meets the standard requirements, thereby improving the overall quality of mechanical assembly.

[0027] The outer wall of the tensioning roller 5 and the outer wall of the synchronous belt 11 abut against each other, and the tensioning roller 5 squeezes the right side of the synchronous belt 11 inward to ensure the tension of the synchronous belt 11.

[0028] The tensioning roller 5 squeezes the synchronous belt 11 inwards to ensure the tension of the synchronous belt 11 and avoid poor engagement caused by loosening of the synchronous belt 11.

[0029] By setting the tensioning roller 5, the tension of the synchronous belt 11 is guaranteed, and poor engagement caused by loosening of the synchronous belt 11 is further avoided. Compared with the traditional tightening device, this device ensures that the rotation amplitude of the two sets of bolt tightening heads 7 is the same through the setting of the synchronous belt 11. At this time, the pre-tightening force of the two sets of bolts is also the same, reducing the risk of bolt loosening and ensuring the stability and safety of the connection.

[0030] The two groups of transmission rods 10 are both hexagonal columns, and the transmission rods 10 can be connected to the wrench in a transmission manner.

[0031] The hexagonal column design of the transmission rod 10 allows the operator to control the rotation of the transmission rod 10 by using a wrench, thereby reducing the workload of the tightening operation.

[0032] The fixing member 8 is rotatably mounted inside the fixing hole 2 via the bearing 6 and is responsible for transmitting torque.

[0033] The bearing 6 is responsible for fixing the fixing member 8 so that the fixing member 8 can be fixed inside the fixing hole 2 and the fixing member 8 can also rotate to transmit torque.

[0034] The bolt tightening head 7 is in the shape of an inner hexagon and is responsible for docking with the nut to achieve the tightening function.

[0035] The hexagonal design of the bolt tightening head 7 enables the bolt tightening head 7 to adapt to most bolts, ensuring the realization of the tightening function.

[0036] The two groups of pulleys 9 are of the same size and model to achieve synchronous transmission of torque.

[0037] Since the two groups of pulleys 9 are of the same model and size, the two groups of bolt tightening heads 7 tighten the bolts to the same extent, thereby achieving synchronous tightening.

[0038] The working principle and use process of this utility model:

[0039] When it is necessary to tighten the bolts, the staff will sleeve the two sets of bolt tightening heads 7 of the device on the outer wall of the nut of the bolt, and then hold the fixed base plate 1 with one hand to keep it stable, and use the other hand to hold the wrench to rotate any set of transmission rods 10. The rotation of the transmission rod 10 will drive the pulley 9 to rotate. However, at this time, the two sets of pulleys 9 are connected by a synchronous belt 11. Furthermore, since the two sets of pulleys 9 are of the same size, the rotation amplitude of the two sets of pulleys 9 is also the same. When the pulley 9 rotates, The pulley 9 will drive the fixing part 8 to rotate, and the fixing part 8 will drive the bolt tightening head 7 to rotate. Further, the two sets of bolt tightening heads 7 will rotate synchronously to tighten the bolts. It is worth noting that when the two sets of pulleys 9 rotate, the tensioning roller 5 and the synchronous belt 11 abut against each other, so that the tensioning roller 5 also rotates following the movement of the synchronous belt 11, and the tensioning roller 5 squeezes the synchronous belt 11 inward to ensure the tension of the synchronous belt 11, avoid poor engagement caused by slackness of the synchronous belt 11, and ensure the synchronization function of the synchronous belt 11.

[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only 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 "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional bolt tightening device, comprising a fixed base plate (1), characterized in that: The upper and lower ends of the fixed base plate (1) are both provided with fixing holes (2), and bearings (6) are provided inside the two groups of the fixing holes (2). The outer wall of the bearing (6) is fixedly connected to the fixing hole (2), and the inner wall of the bearing (6) is fixedly installed with a fixing member (8), and the rear end of the fixing member (8) is fixedly installed with a bolt tightening head (7), and the bolt tightening head (7) is located at the rear of the fixed base plate (1). The front end of the fixing member (8) is fixedly installed with a pulley (9), and the front end of the pulley (9) is fixedly installed with a transmission rod (10); The two groups of pulleys (9) are connected by a synchronous belt (11). A fixed rod (3) is fixedly installed on the right side of the middle part of the fixed base plate (1). A rotating shaft (4) is rotatably installed on the outer wall of the fixed rod (3). A tensioning roller (5) is fixedly installed on the outer wall of the rotating shaft (4).

2. A multifunctional bolt tightening device according to claim 1, characterized in that: The outer wall of the tensioning roller (5) and the outer wall of the synchronous belt (11) abut against each other, and the tensioning roller (5) squeezes the right side of the synchronous belt (11) inward to ensure the tension of the synchronous belt (11).

3. The multifunctional bolt tightening device according to claim 1, characterized in that: The two groups of transmission rods (10) are both hexagonal columns, and the transmission rods (10) can be connected to the wrench in a transmission manner.

4. The multifunctional bolt tightening device according to claim 1, characterized in that: The fixing member (8) is rotatably mounted inside the fixing hole (2) via a bearing (6) and is responsible for transmitting torque.

5. The multifunctional bolt tightening device according to claim 1, characterized in that: The bolt tightening head (7) is in the shape of an inner hexagon and is responsible for docking with the nut to achieve the tightening function.

6. The multifunctional bolt tightening device according to claim 1, characterized in that: The two groups of pulleys (9) are of the same size and type, thereby achieving synchronous transmission of torque.

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