Synchronous pre-tightening device for multi-head bolt

Abstract

The utility model provides a synchronous pre-tightening device for a multi-head bolt, and relates to the technical field of mechanical assembling and fastening. Comprising a pre-tightening mechanism, a clamping mechanism is arranged at the top of the pre-tightening mechanism, the pre-tightening mechanism comprises a bottom plate, four guide rods are fixedly installed at the top of the bottom plate, a fixing plate is fixedly connected between the tops of the four guide rods, a mounting frame is movably arranged between the outer surface walls of the four guide rods in a sleeving mode, and a first bearing is fixedly inserted into the inner surface wall of the mounting frame; and a first rotating shaft is fixedly inserted into the first bearing. According to the multi-head bolt synchronous pre-tightening mechanism, synchronous pre-tightening of the multi-head bolts is achieved under the interaction of all assemblies of the pre-tightening mechanism, the traditional mode that the bolts are manually tightened one by one is abandoned through the pre-tightening mode, the labor intensity of workers is greatly relieved, the working efficiency is remarkably improved, and the production progress can be powerfully guaranteed in a large-scale production scene.

Description

Technical Field

[0001] This utility model relates to the field of mechanical assembly and fastening technology, and in particular to a multi-head bolt synchronous pre-tightening device. Background Technology

[0002] Bolts are a common type of mechanical fastener, consisting of a screw and a nut. They fasten parts through a threaded connection and rely on the preload generated by tightening to ensure the stability of the connection. They are widely used in various mechanical and construction fields.

[0003] In many industrial sectors, equipment or structural components rely on a large number of bolts to connect parts. The quality of bolt connections is of great significance to the overall structural stability, safety and equipment operational reliability. Properly pre-tightening bolts can enhance the friction of the connection parts, effectively resist external forces such as vibration and impact, prevent bolts from loosening, ensure stable operation of equipment under complex working conditions, and greatly improve the reliability and safety of equipment throughout its entire life cycle.

[0004] However, the existing bolt pre-tightening methods have the following shortcomings:

[0005] In existing technologies, the pre-tightening method for multi-head bolts is mostly done manually by using a wrench to tighten them one by one. Although this can achieve bolt pre-tightening to a certain extent, the manual pre-tightening method is extremely labor-intensive. Operators need to repeat high-intensity actions for a long time, and the efficiency is extremely low. Operating one by one consumes a lot of time, which is difficult to meet the needs of large-scale industrial production.

[0006] Therefore, we propose a multi-head bolt synchronous pre-tightening device to solve the problems mentioned above. Utility Model Content

[0007] The purpose of this invention is to provide a multi-head bolt synchronous pre-tightening device. By using an electric push rod drive combined with the guiding effect of a guide assembly, a set of bolt sleeves can be quickly and accurately fitted onto the bolts. At the same time, with the help of the efficient transmission of the motor drive and gear set, a set of bolt sleeves can be rotated synchronously, thereby performing a pre-tightening operation on the multi-head bolts, thus solving the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a multi-head bolt synchronous pre-tightening device, including a pre-tightening mechanism, wherein a clamping mechanism is provided at the top of the pre-tightening mechanism;

[0009] The pre-tightening mechanism includes a base plate, four guide rods are fixedly installed on the top of the base plate, a fixed plate is fixedly connected between the tops of the four guide rods, a mounting bracket is movably sleeved between the outer walls of the four guide rods, a first bearing is fixedly inserted into the inner wall of the mounting bracket, a first rotating shaft is fixedly inserted into the inside of the first bearing, a drive gear is fixedly sleeved on the outer wall of the first rotating shaft, a set of driven gears is meshed with the outer wall of the drive gear, a second rotating shaft is fixedly inserted into the inside of each set of driven gears, a bolt sleeve is fixedly connected to the bottom of each set of second rotating shafts, two second bearings are fixedly sleeved on the outer wall of each set of second rotating shafts, and the outer walls of both sets of second bearings are fixedly inserted into the inside of the mounting bracket.

[0010] Preferably, a first bevel gear is fixedly sleeved on the outer wall of the first rotating shaft, a second bevel gear is meshed with the outer wall of the first bevel gear, and a third rotating shaft is fixedly inserted into the inner wall of the second bevel gear.

[0011] Preferably, two bearing seats are fixedly sleeved on the outer wall of the third rotating shaft, a first motor is fixedly connected to one side of the outer wall of the third rotating shaft, a connecting seat is fixedly connected to the top of the mounting bracket, an electric push rod is fixedly connected to the top of the connecting seat, and the telescopic end of the electric push rod moves through the interior of the fixed plate.

[0012] Preferably, the clamping mechanism includes a placement plate, the top of which has a groove, and two sliders are slidably embedded in the inner wall of the groove.

[0013] Preferably, a bidirectional lead screw is threaded between the inner walls of the two sliders, and a second motor is fixedly connected to one side of the outer wall of the bidirectional lead screw.

[0014] Preferably, the tops of both sliders are fixedly connected to clamps, and the outer wall of the bidirectional lead screw is fixedly fitted with two third bearings.

[0015] Preferably, the top of the base plate is fixedly connected to the bottom of the placement plate.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] 1. In this utility model, through the interaction of the components of the pre-tightening mechanism and the guiding effect of the electric push rod combined with the guide component, a set of bolt sleeves can be quickly and accurately fitted onto the bolts. At the same time, with the help of the efficient transmission of the motor drive and gear set, a set of bolt sleeves can be rotated synchronously, thereby performing a pre-tightening operation on the multi-head bolts. In this way, the synchronous pre-tightening of multi-head bolts is successfully achieved. This pre-tightening method abandons the traditional mode of manually tightening bolts one by one, greatly reducing the labor intensity of workers and significantly improving work efficiency. In large-scale production scenarios, it can effectively guarantee the production progress.

[0018] 2. In this utility model, through the interaction of the various components of the clamping mechanism, the two clamping plates can be stably clamped by the motor drive and the transmission of the threaded assembly, preventing the pre-tightened part from shifting, shaking or falling off during the pre-tightening process, thereby ensuring that the pre-tightening operation can be carried out accurately and stably. Attached Figure Description

[0019] Figure 1 This utility model provides a perspective view of the main structure of a multi-head bolt synchronous pre-tightening device;

[0020] Figure 2 This utility model provides a three-dimensional exploded view of the pre-tightening mechanism in a multi-head bolt synchronous pre-tightening device;

[0021] Figure 3 This utility model provides a three-dimensional exploded view of the pre-tightening mechanism in a multi-head bolt synchronous pre-tightening device;

[0022] Figure 4 This utility model provides a three-dimensional exploded view of the clamping mechanism in a multi-head bolt synchronous pre-tightening device.

[0023] Legend: 1. Pre-tightening mechanism; 101. Base plate; 102. Guide rod; 103. Fixing plate; 104. Mounting bracket; 105. First bearing; 106. First rotating shaft; 107. Driving gear; 108. Driven gear; 109. Second rotating shaft; 110. Bolt sleeve; 111. Second bearing; 112. First bevel gear; 113. Second bevel gear; 114. Third rotating shaft; 115. Bearing seat; 116. First motor; 117. Connecting seat; 118. Electric push rod; 2. Clamping mechanism; 201. Placement plate; 202. Slide groove; 203. Slider; 204. Bidirectional lead screw; 205. Second motor; 206. Clamping plate; 207. Third bearing. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0026] Example 1, as shown in the attached document Figure 1 -Appendix Figure 4 As shown, this utility model provides a technical solution: a multi-head bolt synchronous pre-tightening device, including a pre-tightening mechanism 1, and a clamping mechanism 2 is provided on the top of the pre-tightening mechanism 1;

[0027] The pre-tightening mechanism 1 includes a base plate 101. Four guide rods 102 are fixedly mounted on the top of the base plate 101. A fixing plate 103 is fixedly connected between the tops of the four guide rods 102. A mounting bracket 104 is movably sleeved between the outer walls of the four guide rods 102. A first bearing 105 is fixedly inserted into the inner wall of the mounting bracket 104. A first rotating shaft 106 is fixedly inserted inside the first bearing 105. A driving gear 107 is fixedly sleeved on the outer wall of the first rotating shaft 106. A set of driven gears 108 are meshed with the outer wall of the driving gear 107. A second rotating shaft 109 is fixedly inserted inside each of the set of driven gears 108. Bolt sleeves 110 are fixedly connected to the bottom of each set of second rotating shafts 109. Two second bearings 111 are fixedly sleeved on the outer wall of each of the two sets of second bearings 111, and the outer walls of the two sets of second bearings 111 are fixedly inserted into the interior of the mounting bracket 104. A first bevel gear 112 is fixedly sleeved on the outer wall of the first shaft 106. A second bevel gear 113 is meshed with the outer wall of the first bevel gear 112. A third shaft 114 is fixedly inserted into the inner wall of the second bevel gear 113. Two bearing seats 115 are fixedly sleeved on the outer wall of the third shaft 114. A first motor 116 is fixedly connected to one side of the outer wall of the third shaft 114. A connecting seat 117 is fixedly connected to the top of the mounting bracket 104. An electric push rod 118 is fixedly connected to the top of the connecting seat 117, and the telescopic end of the electric push rod 118 moves through the interior of the fixing plate 103.

[0028] The effect achieved by the entire embodiment 1 is as follows: During use, the electric push rod 118 is started, and its telescopic end drives the connecting seat 117 and the mounting bracket 104 to move downward, so that a set of bolt sleeves 110 covers multiple bolts. Then, the first motor 116 is started, and with the help of the bevel gear set, the first rotating shaft 106 starts to rotate. The rotation of the first rotating shaft 106 drives the drive gear 107 to run, and through the gear set transmission, a set of second rotating shafts 109 achieves synchronous rotation. The rotation of the second rotating shafts 109 drives the set of bolt sleeves 110 to rotate, completing the synchronous pre-tightening of the multi-head bolts. Moreover, this pre-tightening method does not require manual operation one by one, effectively reducing labor intensity and greatly improving work efficiency.

[0029] Example 2, as Figure 2-4 As shown, the clamping mechanism 2 includes a placement plate 201. A groove 202 is provided on the top of the placement plate 201. Two sliders 203 are slidably embedded in the inner wall of the groove 202. A bidirectional lead screw 204 is threaded between the inner walls of the two sliders 203. A second motor 205 is fixedly connected to one side of the outer wall of the bidirectional lead screw 204. A clamping plate 206 is fixedly connected to the top of each of the two sliders 203. Two third bearings 207 are fixedly sleeved on the outer wall of the bidirectional lead screw 204. The top of the base plate 101 is fixedly connected to the bottom of the placement plate 201.

[0030] The effect achieved by the entire embodiment 2 is as follows: During use, the part to be pre-tightened is first placed on the top of the placement plate 201, and then the second motor 205 is started. The output end of the second motor 205 drives the bidirectional lead screw 204 to rotate. The rotation of the bidirectional lead screw 204 drives the two sliders 203 to move in opposite directions in the slide groove 202, thereby accurately positioning and clamping the part to be pre-tightened. This operation can ensure that the part to be pre-tightened always remains stable when the pre-tightening component is performing pre-tightening operations, thereby effectively improving the accuracy and quality of pre-tightening operations and avoiding pre-tightening deviations caused by displacement or shaking of the part to be pre-tightened.

[0031] The working principle of the entire device is as follows: First, place the parts to be pre-tightened stably on the top of the placement plate 201. Then, start the second motor 205. The output of the second motor 205 drives the bidirectional lead screw 204 to rotate. As the bidirectional lead screw 204 rotates, the two sliders 203 move in opposite directions within the groove 202, thus accurately positioning and firmly clamping the parts to be pre-tightened, ensuring stability during subsequent operations. After completing the above steps, the operator starts the electric push rod 118. The telescopic end of the electric push rod 118 then slowly moves the connecting seat 117 and the mounting bracket 104 downwards, allowing a set of bolt sleeves 110 to accurately fit multiple bolts requiring pre-tightening. After the bolts are pre-tightened, the first motor 116 is started. The output of the first motor 116 drives the second bevel gear 113 to rotate. The rotation of the second bevel gear 113 drives the first bevel gear 112, which meshes with it, to rotate. The rotation of the first bevel gear 112 drives the first rotating shaft 106 to rotate synchronously. During the rotation of the first rotating shaft 106, it also drives the driving gear 107 to rotate. The driving gear 107 meshes with a set of driven gears 108, driving the set of driven gears 108 to rotate. The rotation of the set of driven gears 108 then drives a set of second rotating shafts 109 to rotate synchronously. Finally, the set of second rotating shafts 109 drives a set of bolt sleeves 110 to rotate, realizing the synchronous pre-tightening operation of the multi-head bolts.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A multi-bolt synchronous pre-tensioning device, characterized by: Includes a pre-tightening mechanism (1), and a clamping mechanism (2) is provided on the top of the pre-tightening mechanism (1); The pre-tightening mechanism (1) includes a base plate (101), four guide rods (102) are fixedly installed on the top of the base plate (101), a fixing plate (103) is fixedly connected between the tops of the four guide rods (102), a mounting bracket (104) is movably sleeved between the outer walls of the four guide rods (102), a first bearing (105) is fixedly inserted into the inner wall of the mounting bracket (104), a first rotating shaft (106) is fixedly inserted into the inside of the first bearing (105), and the outer wall of the first rotating shaft (106) is... A drive gear (107) is fixedly sleeved on the outer wall of the drive gear (107), and a set of driven gears (108) are meshed on the outer wall of the drive gear (107). A second rotating shaft (109) is fixedly inserted inside the set of driven gears (108). A bolt sleeve (110) is fixedly connected to the bottom of the set of second rotating shafts (109). Two second bearings (111) are fixedly sleeved on the outer wall of each of the second rotating shafts (109), and the outer walls of the two sets of second bearings (111) are fixedly inserted inside the mounting bracket (104).

2. The simultaneous pre-tightening device for multi-head bolts according to claim 1, characterized in that: The outer wall of the first rotating shaft (106) is fixedly fitted with a first bevel gear (112), the outer wall of the first bevel gear (112) is meshed with a second bevel gear (113), and the inner wall of the second bevel gear (113) is fixedly inserted with a third rotating shaft (114).

3. The simultaneous pre-tightening device for multi-head bolts according to claim 2, characterized in that: Two bearing seats (115) are fixedly sleeved on the outer wall of the third rotating shaft (114). A first motor (116) is fixedly connected to one side of the outer wall of the third rotating shaft (114). A connecting seat (117) is fixedly connected to the top of the mounting bracket (104). An electric push rod (118) is fixedly connected to the top of the connecting seat (117), and the telescopic end of the electric push rod (118) moves through the interior of the fixed plate (103).

4. The simultaneous pre-tightening device for multi-head bolts according to claim 3, characterized in that: The clamping mechanism (2) includes a placement plate (201), the top of which is provided with a groove (202), and two sliders (203) are slidably embedded in the inner surface of the groove (202).

5. The simultaneous pre-tightening device for multi-head bolts according to claim 4, characterized in that: A bidirectional lead screw (204) is threaded between the inner walls of the two sliders (203), and a second motor (205) is fixedly connected to one side of the outer wall of the bidirectional lead screw (204).

6. The simultaneous pre-tightening device for multi-head bolts according to claim 5, characterized in that: The top of each of the two sliders (203) is fixedly connected with a clamp (206), and the outer wall of the bidirectional lead screw (204) is fixedly fitted with two third bearings (207).

7. The simultaneous pre-tightening device for multi-head bolts according to claim 6, characterized in that: The top of the base plate (101) is fixedly connected to the bottom of the placement plate (201).

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