Stress detection device suitable for bolts of multiple specifications

Abstract

The invention relates to the field of bolt stress detection, in particular to a stress detection device suitable for bolts of multiple specifications, which comprises a jack body 100 used for pressurizing the bolts, the jack body 100 comprises a piston rod 110, and the bolt limiting mechanism 200 comprises an upper limiting piece 210 and a limiting piece 220, the bottom of the upper limiting piece 210 is in limiting sliding connection with a mounting plate 211, the mounting plate 211 is fixedly connected with a piston rod 110, the bottom of the limiting piece 220 is provided with a fixing ring 221 in a limiting sliding mode, the fixing ring 221 is fixedly connected to the jack body 100 in a sleeving mode, the upper limiting piece 210 and the limiting piece 220 are arranged in a staggered mode, and a screw rod and a nut of the bolt are in limiting connection with the upper limiting piece 210 and the limiting piece 220 correspondingly. The bolt is placed between the upper limiting piece 210 and the limiting piece 220 in a limiting mode.

Description

Technical Field

[0001] The present invention relates to the field of bolt stress detection, and in particular to a bolt stress detection device suitable for multiple specifications. Background Art

[0002] Stress testing generally refers to the technical means of using monitoring instruments to monitor the stress changes of the stressed structure during the construction process of buildings, such as steel structure installation, unloading, modification, reinforcement, concrete pouring, etc., and issuing an alarm when the monitored value approaches the control value to ensure the safety of construction. It can also be used to check whether the construction process is reasonable.

[0003] In the prior art, there is a bolt tensile stress detection simulation experimental device with application number CN201420169403.4. However, in the above scheme, "the bolt to be tested connects the tensile block and the base, and the two ends of the jack built into the tensile block respectively apply tension to the tensile block and the base." The bolt needs to remove the nut before connecting it to the tensile block and the base. After the tensile test is completed, if the bolt is intact, the nut needs to be removed before the bolt is taken out. Placing and removing the bolt is cumbersome, which increases the detection time and is inefficient. How to invent a bolt stress detection device suitable for multiple specifications to improve these problems has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a bolt stress detection device suitable for multiple specifications.

[0005] The objective of the present invention is achieved in the following manner: a bolt stress detection device suitable for multiple specifications, including a jack body 100 for pressurizing bolts, the jack body 100 including a piston rod 110, and also including: a bolt limiting mechanism 200, the bolt limiting mechanism 200 including an upper limit member 210 and a limit member 220, the bottom limit sliding connection of the upper limit member 210 is connected to a mounting plate 211, the mounting plate 211 is fixedly connected to the piston rod 110, the bottom limit sliding of the limit member 220 is provided with a fixing ring 221, the fixing ring 221 is fixedly sleeved on the jack body 100, the upper limit member 210 and the limit member 220 are staggered, the screw and nut of the bolt are respectively limitedly connected to the upper limit member 210 and the limit member 220, and the bolt limit is placed between the upper limit member 210 and the limit member 220.

[0006] Furthermore, the upper limit member 210 includes an adjusting limit plate 212 and a fixing plate 213. A fixing plate 213 is fixedly connected to both sides of the top surface of the mounting plate 211. The adjusting limit plate 212 is slidingly installed on the surface of the mounting plate 211. A first adjusting bolt 214 is threaded through the fixing plate 213, and the first adjusting bolt 214 is connected to the adjusting limit plate 212 for limiting rotation.

[0007] Furthermore, two adjusting limit plates 212 are symmetrically arranged, and the two adjusting limit plates 212 are located inside the two fixed plates 213. The two adjusting limit plates 212 are assembled into a cylinder, and a rectangular through hole is opened in the middle of the cylinder. The rectangular through hole is located at the top of one side of the adjusting limit plate 212 and is set to penetrate. The penetration position of the top of the adjusting limit plate 212 is offset to one side and penetrates from the side of the cylinder. The penetration position is used to place the rod of the bolt.

[0008] Furthermore, the first adjusting bolt 214 is threadedly penetrated by the fixing plate 213 , and the other end of the first adjusting bolt 214 is rotationally connected to the side wall of the adjusting limiting plate 212 via the first bearing 216 .

[0009] Furthermore, both sides of the bottom of the adjustment limit plate 212 are fixedly connected with first limit sliders 215 , and the surface of the mounting plate 211 is provided with limit rails that match the first limit sliders 215 .

[0010] Furthermore, the limit member 220 includes a fixed adjustment plate 226 and an adjustment limit rod 223. The fixed ring 221 is fixedly welded to the outer wall of the jack body 100. A fixed adjustment plate 226 is fixedly connected to both sides of the top of the fixed ring 221. Two adjustment limit rods 223 are arranged between the two adjustment limit plates 212. The bottom of each adjustment limit rod 223 is fixedly connected to a connecting ring 225 through the rod body. The two connecting rings 225 are located between the two fixed adjustment plates 226. The bottom of the connecting ring 225 is fixedly connected to a supporting connecting rod 222. The supporting connecting rod 222 is slidably connected to the fixed ring 221. A second adjusting bolt 227 is threaded through each fixed adjustment plate 226, and the second adjusting bolt 227 is connected to one side of the connecting ring 225 for limited rotation.

[0011] Furthermore, a group of supporting connecting rods 222 are provided at the bottom of each adjustment limit rod 223, and a group of supporting connecting rods 222 consists of two. The two supporting connecting rods 222 are connected by a connecting ring 225, and the connecting ring 225 is arc-shaped. The two connecting rings 225 are wrapped around the outside of the mounting plate 211.

[0012] Furthermore, the bottoms of the two groups of support connecting rods 222 are fixedly connected to the second limiting sliders 224 , and the top of the fixing ring 221 is provided with a limiting sliding groove matching the second limiting sliders 224 .

[0013] Furthermore, the second limiting slider 224 and the first limiting slider 215 are both trapezoidal structures.

[0014] Furthermore, the second adjusting bolt 227 is connected to the two connecting rings 225 for limited rotation via the second bearing 228 .

[0015] Compared with the prior art, the present invention places the nut and bolt together between two adjusting limit plates and two adjusting limit rods, and the head of the bolt and the nut are respectively located on the upper side of the adjusting limit plate and the bottom of the adjusting limit rod. The jack body rises to lift the mounting plate. At this time, the mounting plate will push the adjusting limit plate to squeeze the nut (bolt head) above the adjusting limit plate, and the bolt head (nut) below the adjusting limit rod will not move. The jack body continues to apply pressure to perform stress detection on the bolt, and at the same time adjusts the first adjusting bolt and the second adjusting bolt according to different bolt sizes, so that the distance between the two adjusting limit plates and the two adjusting limit rods is adjusted to cope with bolts of different sizes. When the detection is completed, the jack body descends, and the bolt and nut can be directly removed together, which is convenient for putting in and taking out the bolt and nut together and improves the efficiency of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the combined structure of the jack body and the bolt limiting mechanism provided in an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a jack body provided in an embodiment of the present invention; Figure 3 A schematic structural diagram of a bolt limiting mechanism provided in an embodiment of the present invention; Figure 4 A schematic diagram of the upper limit member structure provided in an embodiment of the present invention; Figure 5 A schematic diagram of the limiter structure provided in an embodiment of the present invention.

[0017] In the figure: 100-jack body; 110-piston rod; 200-bolt limiting mechanism; 210-upper limit member; 211-mounting plate; 212-adjusting limit plate; 213-fixing plate; 214-first adjusting bolt; 215-first limit slider; 216-first bearing; 220-limiting member; 221-fixing ring; 222-support connecting rod; 223-adjusting limit rod; 224-second limit slider; 225-connecting ring; 226-fixed adjusting plate; 227-second adjusting bolt; 228-second bearing. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0019] In the present invention, unless otherwise expressly specified and limited, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0020] See also Figures 1 to 3 The present invention provides a technical solution: a bolt stress detection device suitable for multiple specifications, including a jack body 100 for pressurizing the bolt, the jack body 100 including a piston rod 110, and also including The bolt limiting mechanism 200 includes an upper limit member 210 and a limit member 220. The bottom limit sliding connection of the upper limit member 210 is provided with a mounting plate 211. The mounting plate 211 is fixedly installed on the piston rod 110. The bottom limit sliding connection of the limit member 220 is provided with a fixing ring 221. The fixing ring 221 is fixedly sleeved on the jack body 100. The upper limit member 210 and the limit member 220 are arranged alternately. The two ends of the bolt are respectively limitedly connected with the upper limit member 210 and the limit member 220. The bolt limit is placed between the upper limit member 210 and the limit member 220. The jack body 100 lifts the upper limit member 210 to stretch the bolt for stress detection.

[0021] See also Figure 3 and Figure 4 The upper limit member 210 includes an adjusting limit plate 212 and a fixing plate 213. The fixing plates 213 are fixedly connected on both sides of the surface of the mounting plate 211. The adjusting limit plate 212 is slidingly installed on the surface of the mounting plate 211. A first adjusting bolt 214 is threaded through the fixing plate 213. The first adjusting bolt 214 is connected to the adjusting limit plate 212 for limiting rotation.

[0022] There are two symmetrical adjustment limit plates 212, which are located inside the two fixed plates 213. The two adjustment limit plates 212 are assembled into a cylindrical shell structure, and a rectangular through hole is opened in the middle of the cylinder. The rectangular through hole is located at the top of one side of the adjustment limit plate 212 and is a through setting. The through position of the top of the adjustment limit plate 212 is offset to one side and penetrates to the side of the cylindrical shell as shown in the figure for the placement of nuts and screws. The through position is used to prevent the rod of the bolt so that the head of the bolt and the nut are located on both sides.

[0023] A first adjusting bolt 214 is threadedly connected to the fixing plate 213, and the other end of the first adjusting bolt 214 is rotationally connected to the side wall of the adjusting limit plate 212 via a first bearing 216. First limit sliders 215 are fixedly connected to both sides of the bottom of the adjusting limit plate 212. A limit rail that cooperates with the first limit sliders 215 is provided on the surface of the mounting plate 211. The first limit sliders 215 are used to move horizontally and linearly on the mounting plate 211 when adjusting the adjusting limit plate 212. There are preferably two or more first limit sliders 215, and the limit rails are preferably two or more corresponding parallel limit rails to prevent the mounting plate 211 and the adjusting limit plate 212 from derailing.

[0024] See also Figure 3 and Figure 5 The limiting member 220 includes a fixed adjustment plate 226 and an adjustment limit rod 223. The fixing ring 221 is fixedly welded to the outer wall of the jack body 100. A fixed adjustment plate 226 is fixedly connected to both sides of the top of the fixing ring 221. Two adjustment limit rods 223 are arranged between the two adjustment limit plates 212. The bottom of each adjustment limit rod 223 is fixedly connected to a connecting ring 225 through a rod body. The two connecting rings 225 are located between the two fixed adjustment plates 226. A supporting connecting rod 222 is fixedly connected to the bottom of the connecting ring 225. The supporting connecting rod 222 is slidably connected to the fixing ring 221. A second adjusting bolt 227 is threaded through each fixed adjustment plate 226, and the second adjusting bolt 227 is rotationally limited to one side of the connecting ring 225.

[0025] Each adjustment limit rod 223 is provided with a set of two supporting connecting rods 222 at its base. These two supporting connecting rods 222 are connected by a connecting ring 225. The connecting ring 225 is arc-shaped, preferably semicircular, with a gap formed between the two opposing connecting rings 225 for the mounting plate 211 to pass through. The two connecting rings 225 wrap around the exterior of the mounting plate 211. A second limiting slider 224 is fixedly connected to the base of each set of supporting connecting rods 222. The top of the fixed ring 221 is provided with a limiting groove that matches the second limiting slider 224. Both the second limiting slider 224 and the first limiting slider 215 are trapezoidal in shape, preferably an isosceles trapezoid or dovetail block structure, to enhance the limiting effect and prevent derailment during adjustment. The second adjusting bolt 227 is connected to the two connecting rings 225 for limited rotation through the second bearing 228, which facilitates the adjustment of the two connecting rings 225 to cooperate with the two sets of supporting connecting rods 222 to drive the two adjusting limiting rods 223 closer or farther away, and is used to limit bolts of different sizes.

[0026] Working principle: The bolt and nut to be tested do not need to be disassembled after they are assembled. The nut and bolt are placed together between the two adjusting limit plates 212 and the two adjusting limit rods 223. At the same time, the head of the bolt and the nut are respectively located on the upper side of the adjusting limit plate 212 and the bottom of the adjusting limit rod 223. After the placement is completed, the jack body 100 is raised to lift the mounting plate 211. At this time, the mounting plate 211 will push the adjusting limit plate 212 to squeeze the nut (bolt head) above the adjusting limit plate 212, and the bolt head (nut) below the adjusting limit rod 223 will not move. The jack body 100 continues to apply pressure to stress test the bolt, and at the same time, the first adjusting bolt 214 and the second adjusting bolt 227 are adjusted according to different bolt sizes, so that the distance between the two adjusting limit plates 212 and the two adjusting limit rods 223 is adjusted to cope with bolts of different sizes. When the inspection is completed, the jack body 100 is lowered, and the bolt and nut can be directly removed together.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several changes and improvements can be made without departing from the overall concept of the present invention, and these should also be regarded as the scope of protection of the present invention.

Claims

1. A bolt stress detection device suitable for multiple specifications, comprising a jack body (100) for pressurizing the bolt, the jack body (100) comprising a piston rod (110), characterized in that: Also includes: The bolt limiting mechanism (200) includes an upper limit member (210) and a limiting member (220). The bottom of the upper limit member (210) is slidingly connected to a mounting plate (211), and the mounting plate (211) is fixedly connected to the piston rod (110). The bottom of the limiting member (220) is slidingly provided with a fixing ring (221), and the fixing ring (221) is fixedly sleeved on the jack body (100). The upper limit member (210) and the limiting member (220) are staggered. The screw rod and the nut of the bolt are respectively connected to the upper limit member (210) and the limiting member (220). The bolt limiter is placed between the upper limit member (210) and the limiting member (220).

2. The bolt stress detection device applicable to multiple specifications according to claim 1, characterized in that: The upper limit member (210) includes an adjusting limit plate (212) and a fixing plate (213). A fixing plate (213) is fixedly connected to each of two sides of the top surface of the mounting plate (211). The adjusting limit plate (212) is slidingly mounted on the surface of the mounting plate (211). A first adjusting bolt (214) is threadedly provided on the fixing plate (213). The first adjusting bolt (214) is rotationally connected to the adjusting limit plate (212) in a limiting manner.

3. The bolt stress detection device applicable to multiple specifications according to claim 2, characterized in that: Two adjusting limit plates (212) are symmetrically arranged. The two adjusting limit plates (212) are located inside the two fixed plates (213). The two adjusting limit plates (212) are assembled into a cylindrical shape, and a rectangular through hole is opened in the middle of the cylindrical shape. The rectangular through hole is located at the top of one side of the adjusting limit plate (212) and is set to penetrate. The penetration position of the top of the adjusting limit plate (212) is offset to one side and penetrates from the side of the cylindrical shape. The penetration position is used to place the rod of the bolt.

4. The bolt stress detection device applicable to multiple specifications according to claim 3, characterized in that: The first adjusting bolt (214) is threadedly passed through the fixing plate (213), and the other end of the first adjusting bolt (214) is connected to the side wall of the adjusting limiting plate (212) via the first bearing (216) for limited rotation.

5. The bolt stress detection device applicable to multiple specifications according to claim 3, characterized in that: Both sides of the bottom of the adjustment limit plate (212) are fixedly connected with a first limit slider (215), and a limit slide rail matching the first limit slider (215) is provided on the surface of the mounting plate (211).

6. The bolt stress detection device applicable to multiple specifications according to claim 5, characterized in that: The limiting member (220) includes a fixed adjustment plate (226) and an adjustment limiting rod (223). The fixing ring (221) is fixedly welded to the outer wall of the jack body (100). A fixed adjustment plate (226) is fixedly connected to both sides of the top of the fixing ring (221). Two adjustment limiting rods (223) are arranged between the two adjustment limiting plates (212). The bottom of each adjustment limiting rod (223) is fixedly connected to a connecting ring (225) through a rod body. The two connecting rings (225) are located between the two fixed adjustment plates (226). The bottom of the connecting ring (225) is fixedly connected to a supporting connecting rod (222). The supporting connecting rod (222) is slidably connected to the fixing ring (221). A second adjusting bolt (227) is threadedly connected to each fixed adjustment plate (226). The second adjusting bolt (227) is connected to one side of the connecting ring (225) for limited rotation.

7. The bolt stress detection device applicable to multiple specifications according to claim 6, characterized in that: A group of supporting connecting rods (222) is provided at the bottom of each adjustment limit rod (223), wherein the group of supporting connecting rods (222) consists of two supporting connecting rods (222). The two supporting connecting rods (222) are connected by a connecting ring (225). The connecting ring (225) is arranged in an arc shape. The two connecting rings (225) are wrapped around the outside of the mounting plate (211).

8. The bolt stress detection device applicable to multiple specifications according to claim 6, characterized in that: The bottoms of the two groups of supporting connecting rods (222) are fixedly connected to the second limiting slider (224), and the top of the fixing ring (221) is provided with a limiting sliding groove matching the second limiting slider (224).

9. The bolt stress detection device applicable to multiple specifications according to claim 8, characterized in that: The second limiting slider (224) and the first limiting slider (215) both have a trapezoidal structure.

10. The bolt stress detection device applicable to multiple specifications according to claim 6, characterized in that: The second adjusting bolt (227) is connected to the two connecting rings (225) via the second bearing (228) for limited rotation.

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