A pull-out shell structure of a strap pre-tightening force monitor

Abstract

The present invention discloses a pull-out shell structure of a strap preload monitor, and relates to a pull-out shell structure. The invention comprises an upper cover body and a lower cover body, wherein the upper cover body is provided with a U-shaped opening section, and the U-shaped opening section is provided with a plurality of slide grooves with two ends penetrating therethrough, and the lower cover body is slidably arranged in the slide groove; both ends of the U-shaped opening section are provided with side cover bodies, and both side walls of the side cover bodies are provided with protrusions, and the protrusions are connected in the slide grooves, and the side cover bodies are provided with mounting grooves, and both ends of the lower cover body are connected in the mounting grooves; the two side cover bodies are respectively side cover body 1 and side cover body 2, and the side cover body 1 is provided with a charging connector; the side cover body 2 is provided with a plurality of connecting sections, and the circuit board is connected to the connecting sections; the pull-out structure design is adopted, so that the lower cover body and the connecting parts can be removed with a small amplitude, and the relative movement of the connection between the shell structure and the strap is reduced, thereby reducing the measurement error of the strap preload, and at the same time, it can also make the inspection and replacement of the various parts and components arranged in the force measuring body more convenient.

Description

Technical Field

[0001] The invention relates to a pull-out shell structure, and more particularly to a pull-out shell structure of a strap pre-tightening force monitor. Background Art

[0002] At present, strap preload monitors are widely used in the logistics industry. They can monitor the strap preload in real time during multiple cargo bundling processes, so that the cargo can reach the optimal bundling state and will not loosen or fall off during transportation.

[0003] The shell structure of the existing strap preload monitor is relatively complex, the price is relatively high, and it is inconvenient to disassemble and assemble. At the same time, when the monitor needs to be repaired and replaced during real-time monitoring, the large degree of disassembly and assembly will affect the connection position between the shell structure and the strap, thereby causing a large preload measurement error. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings, an object of the present invention is to provide a pull-out housing structure of a strap pre-tensioning force monitor.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a pull-out shell structure of a strap preload monitor, a force measuring body, including an upper cover body and a lower cover body, the upper cover body is provided with a U-shaped opening section, the U-shaped opening section is provided with a plurality of slide grooves with both ends passing therethrough, and the lower cover body is slidably arranged in the slide groove.

[0006] This solution adopts a pull-out structure design, which is convenient for disassembly and installation of the lower cover body. This structural design allows the lower cover body to be removed with a small amplitude, reducing the relative movement of the connection position between the shell structure and the strap, thereby reducing the measurement error of the strap preload force. At the same time, it can also make the inspection and replacement of various spare parts set in the force measuring body more convenient.

[0007] Preferably, both ends of the U-shaped opening section are provided with side covers, both side walls of the side covers are provided with protrusions, the protrusions are connected in the slide groove, the side covers are provided with mounting grooves, and both ends of the lower cover are connected in the mounting grooves. Both ends of the mounting groove are through, there are two protrusions, and the distance between the protrusion end walls at both ends of the side cover is equal to the width of the lower cover. This structural design allows the side cover and the lower cover to slide in the same slide groove, making the connection between the upper cover, the lower cover and the side cover more compact, and facilitating the disassembly and assembly of the side cover.

[0008] Preferably, a charging connector is provided in the force measuring body, and the two side covers are side cover body 1 and side cover body 2, and a rectangular boss is provided on side cover body 1, and the charging connector is connected in the rectangular boss. This structural design facilitates the disassembly and replacement of the charging connector; at the same time, the side cover body is connected to the charging connector, so that the side cover body 1 and the charging connector form a connection assembly, so that they can be disassembled and assembled synchronously, reducing the disassembly and assembly range of the charging connector during maintenance and replacement, and reducing the measurement error of the strap preload when the circuit board is replaced.

[0009] Preferably, a through T-shaped cavity is provided in the rectangular boss, and the T-shaped cavity is composed of a connected cavity 1 and a cavity 2, the width of cavity 1 is greater than that of cavity 2, the charging connector is connected to the limit plate, the limit plate is installed in cavity 1, and the charging connector is installed in cavity 2, and the limit plate in cavity 1 can be fastened by screws. A threaded hole is provided on the rectangular boss, and the threaded hole is connected to cavity 1. By adjusting the tightness of the screws set in the threaded hole, the limit plate adjusted in the position in cavity 1 can be pressed and fixed, thereby realizing the limit fixation of the charging connector.

[0010] Preferably, a circuit board is provided in the force measuring body, convex strips are provided on both side walls of the side cover body, a plurality of connecting sections are provided on the side cover body, the convex strips are connected in the mounting groove, and the circuit board is connected to the connecting sections. There are two convex strips on the side cover body and two connecting sections, which are respectively provided at the two ends of the surface of the side cover body. An L-shaped cross structure is formed between the side cover body and the connecting sections. This structure allows the circuit board to be installed closer to the connection between the convex strip on the side cover body and the second slide groove on the upper cover body, so as to achieve synchronous sliding adjustment with the side cover body, improve the connection strength of the circuit board and the stability of the sliding adjustment, facilitate the inspection and replacement of the circuit board, and also reduce the disassembly and assembly range of the circuit board during inspection and replacement. Further, the measurement error of the pre-tightening force of the binding strap is reduced when the circuit board is replaced. The circuit board is fixed on the side cover body, so that the upper cover body does not need to be separately designed with mounting holes and limiting structures, thereby reducing the processing cost of the upper cover body.

[0011] Preferably, the U-shaped opening section includes a main section and a plurality of side sections, the side sections are in a "bow" structure, so that the side sections opposite to each other form a slide groove 1 and a slide groove 2, and the side sections facing away form a fixed groove, and the fixed groove is arranged between the slide groove 1 and the slide groove 2. The side sections are arranged at both ends of the main section, and the two are arranged vertically; the side wall of the lower cover body and the protrusion on the side cover body are slidably connected in the slide groove 1, and the convex strip on the side cover body is slidably connected in the slide groove 2, and the side cover body can be fixedly connected by screws installed in the fixed groove.

[0012] Preferably, a small cover plate is provided on the side cover body 1 away from the rectangular boss, a circular through hole is provided on the side cover body 1, a cylinder is provided on the small cover body, a truncated cone is provided on the cylinder, the bottom circle of the truncated cone is larger than the diameter of the cross-section circle of the circular through hole, the cylinder and the truncated cone pass through the circular through hole, so that the side cover body 1 and 2 are located between the truncated cone and the small cover plate. The structure can adjust the opening position of the small cover plate by adjusting the position of the cylinder between the truncated cone and the small cover plate.

[0013] Preferably, a power supply and a circuit board are installed in the force measuring body, the power supply and the circuit board are connected by wires, a power button is installed on the circuit board, and the circuit board and the charging connector are connected by wires. A round hole is provided on the lower cover body, the power button is connected in the round hole, and a cylindrical mounting shell is provided outside the power button. The surface edge of the mounting shell is provided with rounded corners to facilitate the mounting shell to be installed in the round hole. The mounting groove on the second side cover body and the mounting shell on the circuit board limit the lower cover body in the longitudinal and lateral directions, and the connecting section on the second side cover body and the round hole on the lower cover body limit the circuit board in the longitudinal and lateral directions, so that the second side cover body, the lower cover body and the circuit board can be synchronously pulled out or installed, and the two-by-two connection and fixation between the second side cover body, the lower cover body and the circuit board are realized, thereby forming a A connected whole, the connection structure improves the stability of the connection between the side cover body 2, the lower cover body and the circuit board, thereby improving the integrity of the structure and making the inspection and replacement of the circuit board more convenient; when the strap monitor needs to be inspected during the monitoring process, the structure can reduce the disassembly and assembly range of the circuit board during the inspection and replacement, and further reduce the measurement error of the strap preload when the circuit board is replaced; wherein the connection section and the circuit board are fixedly connected by bolts, and the structural design improves the integrity and stability of the connection between the circuit board, the side cover body 2 and the lower cover body.

[0014] Preferably, a pressure sensor is provided on the force measuring body, and a plurality of connecting strips are provided on the force measuring body. The connecting strips are arranged on both sides of the pressure sensor, and two strap grooves are formed between the connecting strips and the force measuring body. The binding belt passes through the two strap grooves, and the two strap grooves serve as two fulcrums of the binding belt to press the binding belt on the pressure sensor. When the binding belt preload monitor is used, the binding belt preload monitor is clamped on the binding belt, the binding belt is inserted into the two strap grooves and the binding belt is pressed on the pressure sensor. The tension of the binding belt is judged by the pressure signal detected by the pressure sensor. The greater the tension of the binding belt, the greater the pressure on the pressure sensor. Therefore, it is possible to judge whether the binding belt is in a tightened state by comparing the detected pressure value with the preset pressure value. During the binding operation of the binding belt, the tension of the binding belt can be conveniently detected by the binding belt preload test device. After the binding is completed, the binding belt is ensured to be in a tightened state to prevent the goods from scattering due to the loosening of the binding belt, which is conducive to ensuring the safe transportation of the goods.

[0015] Preferably, a clamping mechanism is provided on the inner wall of the strap loading groove, the clamping mechanism includes a clamping seat and a clamping spring arranged on the clamping seat, a waist-shaped groove is provided on the inner wall of the opening of the U-shaped opening section, a waist hole is provided in the waist-shaped groove, the waist hole is connected with the strap loading groove, the clamping seat is arranged in the waist-shaped groove, and is supported and fixed by the side cover body, the clamping spring is arranged in the waist hole, and partially extends into the strap loading groove, which is used for limiting and fixing the strap in the strap loading groove; the clamping mechanism can clamp and fix the strap through the clamping spring when the strap preload force monitor is stuck on the strap.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) It adopts a pull-out shell structure design, which is easy to disassemble and assemble; (2) Through the longitudinal and lateral limitation of the lower cover body by the mounting groove on the side cover body 2 and the mounting shell on the circuit board, and the longitudinal and lateral limitation of the circuit board by the connecting section on the side cover body 2 and the circular hole on the lower cover body, the side cover body 2, the lower cover body and the circuit board can be synchronously pulled out or installed, and the side cover body 2, the lower cover body and the circuit board are connected and fixed in pairs, thereby forming a connection component, thereby improving the integrity of the structure; the connection structure improves the stability of the connection between the side cover body 2, the lower cover body and the circuit board, making the inspection and replacement of the circuit board more convenient. At the same time, when the strap monitor is in monitoring During the measurement process, when maintenance is required, this structure can reduce the disassembly and assembly range of the circuit board during maintenance and replacement, and further reduce the measurement error of the strap preload when the circuit board is replaced; (3) The side cover body is connected to the charging connector, so that the side cover body and the charging connector form a connecting assembly, so that they can be disassembled and assembled synchronously, reducing the disassembly and assembly range of the charging connector during maintenance and replacement, and reducing the measurement error of the strap preload when the circuit board is replaced; (4) The strap preload monitor can be installed and fixed through the connecting strip, pressure sensor and clamping mechanism on the force measuring body, and the bagging groove formed between the connecting section and the force measuring body is used as the two installation fulcrums of the strap, so that the strap is pressed on the pressure sensor, thereby realizing the clamping force detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a strap pre-tightening force monitoring device in direction 1 of the present invention;

[0018] Figure 2 It is an exploded schematic diagram of a strap pre-tightening force monitor of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the side cover body 1 of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the small cover body of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the side cover body 2 of the present invention;

[0022] Figure 6 It is a structural schematic diagram of a strap preload monitoring device according to the present invention in the second direction;

[0023] Figure 7 is an exploded schematic diagram of some components of the strap preload monitor of the present invention;

[0024] In the figure: force measuring body 1; power supply 101, circuit board 102, charging connector 103, pressure sensor 104; power button 105; wiring plug 106; mounting housing 107; rounded corner 108; round hole 109; connecting strip 110; belt slot 111; pressing seat 112; pressing spring 113; waist groove 114; waist hole 115; upper cover 2; lower cover 3; side cover 4; protrusion 401; mounting slot 402; The convex strip 403; the side cover body 1 410; the rectangular boss 411; the T-shaped cavity 412; the cavity 1 412.1; the cavity 2 412.2; the limit plate 413; the threaded hole 414; the small cover plate 416; the circular through hole 417; the cylinder 418; the frustum 419; the side cover body 2 420; the connecting section 421; the U-shaped opening section 5; the main section 501; the side section 502; the slide groove 1 503; the slide groove 2 504; the fixing groove 505. DETAILED DESCRIPTION

[0025] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0026] Embodiment 1: A pull-out housing structure of a strap preload monitor (see attached Figure 1-7 ), including a force measuring body 1, the force measuring body 1 includes an upper cover body 2, a lower cover body 3, and two side cover bodies 4, the upper cover body 2 is provided with a U-shaped opening section 5, the U-shaped opening section 5 includes a main section 501 and two side sections 502, the side sections 502 are arranged at both ends of the main section 501, and the two are arranged vertically; the side sections 502 are in a "bow" structure, so that a slide groove 1 503 and a slide groove 2 504 are formed on the opposite side of the side section 502, and a fixed groove 505 is formed on the back side of the side section 502, the side end of the lower cover body 3 is slidably connected in the slide groove 1 503, and protrusions 401 are provided on the two side walls of the side cover body 4, and the protrusions 401 are slidably connected in the slide groove 1 503, and the side cover body 4 is provided with a mounting groove 402, and the two ends of the lower cover body 3 are connected in the mounting groove 402.

[0027] See attached Figure 1 , attached Figure 2 , attached Figure 7A power supply 101, a circuit board 102, a charging connector 103, and a pressure sensor 104 are installed in the force measuring body 1. The power supply 101 is connected to the circuit board 102 through a wire, and the circuit board 102 is connected to the charging connector 103 through a wire. A power button 105 is installed on the circuit board 102, and the charging connector 103 is installed on the side cover body 4 for convenient charging. The wiring plug 106 connected to the circuit board 102 is arranged horizontally, which can reduce the vertical space occupied, and thus help to reduce the volume of the entire binding belt force measuring device. The power button 105 is on the back of the force measuring body 1, and the pressure sensor 104 is installed on the front of the force measuring body 1. The power supply 101 can be a battery or a dry cell. A solar panel can also be installed on the back of the force measuring body 1, and a photovoltaic controller is electrically connected between the solar panel and the battery to achieve solar charging.

[0028] See attached Figure 1-7 The side cover bodies 4 at both ends of the force measuring body 1 are respectively a side cover body 1 410 and a side cover body 2 420; convex strips 403 are provided on the end walls on both sides of the side cover body 1 410 and the side cover body 2 420, and the convex strips 403 are slidably connected in the second slide groove 504, and the side wall of the lower cover body 3 and the protrusion 401 on the side cover body 4 are slidably connected in the first slide groove 503, and the convex strips 403 on the side cover body 4 are slidably connected in the second slide groove 504, and the fixing groove 505 is arranged between the first slide groove 503 and the second slide groove 504. The side cover body 4 can be fixedly connected by screws installed in the fixing groove 505, which is convenient for hiding the bolts and increasing the connection strength between the side cover body 4 and the side section 502.

[0029] See attached Figure 2 , attached Figure 3 , attached Figure 4 And attached Figure 7 A rectangular boss 411 is provided on the side cover body 410, and the charging connector 103 is connected to the rectangular boss 411; a through T-shaped cavity 412 is provided in the rectangular boss 411, and the T-shaped cavity 412 includes a connected cavity 1 412.1 and a cavity 2 412.2, and the width of the cavity 1 412.1 is greater than that of the cavity 2 412.2. A limiting plate 413 is fixed on the charging connector 103, and the limiting plate 413 is installed in the cavity 1 412.1, and the charging connector 103 is installed in the cavity 2 412.2. A threaded hole 414 is provided on the rectangular boss 411, and the threaded hole 414 is connected to the cavity 1 412.1. By adjusting the tightness of the screw set in the threaded hole 414, the limiting plate 413 adjusted in position in the cavity 1 412.1 is pressed and fixed, thereby realizing the limiting fixation of the charging connector 103.

[0030] See attached Figure 2 , attached Figure 3 , attached Figure 4 And attached Figure 7A small cover plate 416 is provided on the side cover body 1 410 away from the rectangular boss 411, a circular through hole 417 is provided on the side cover body 1 410, a cylinder 418 is provided on the small cover body 416, a round table 419 is provided on the cylinder 418, the bottom circle of the round table 419 is larger than the cross-sectional diameter of the circular through hole 417, the cylinder 418 and the round table pass through the circular through hole 417, so that the side cover body 1 410 is located between the round table 419 and the small cover plate 416. The structure can adjust the position of the small cover plate 416 by adjusting the position of the cylinder 418 between the round table 419 and the small cover plate 416.

[0031] See attached Figure 2 , attached Figure 5 And attached Figure 7 , two connecting sections 421 are provided on the side cover body 420, which are respectively arranged at the two ends of the side cover body 420 on the side wall body close to the force measuring body 1, wherein the connecting section 421 is fixedly connected to the circuit board 102 by bolts. The convex strip 403 on the side cover body 420 is connected to the second slide groove 504, and an L-shaped cross structure is formed between the side cover body 420 and the connecting section 421. This structure allows the circuit board 102 to be installed closer to the connection between the convex strip on the side cover body 4 and the second slide groove 504 on the upper cover body 2, so as to achieve synchronous sliding adjustment with the side cover body 4, thereby improving the connection strength of the circuit board 102 and the stability of the sliding adjustment;

[0032] See attached Figure 2 , attached Figure 5 and attached Figure 7The power button 105 is provided with a cylindrical mounting shell 107 on the outside, and the surface edge of the mounting shell 107 is provided with a chamfered corner 108. The lower cover 3 is provided with a circular hole 109, which is convenient for the mounting shell 107 to be installed in the circular hole 109 on the lower cover 3. The mounting groove 402 on the side cover 420 and the mounting shell 107 on the circuit board 102 limit the lower cover 3 in the longitudinal and lateral directions, and the connecting section 421 on the side cover 420 and the circular hole 109 on the lower cover 3 limit the circuit board 102 in the longitudinal and lateral directions, so that the side cover 420, the lower cover 3 and the circuit board 102 are connected and fixed in pairs, thereby forming a connected whole, which is convenient for the side cover 420, the lower cover 3 and the circuit board 102 to be connected. Synchronous pull-out removal or installation; the connection structure can make the connection between the side cover body 420, the lower cover body 3 and the circuit board 102 more compact, reduce the occupied space, improve the integrity of the structure, and make the inspection and replacement of the circuit board 102 more convenient; when the strap monitor needs to be inspected during the monitoring process, the structure can reduce the disassembly and assembly range of the circuit board 102 during the inspection and replacement, and further reduce the measurement error of the strap preload when the circuit board 102 is replaced; the structural design improves the integrity and stability of the connection between the circuit board 102, the side cover body 420 and the lower cover body 3; wherein, the lower cover body 3 can achieve a small deformation, which is convenient for assembly and connection with the side cover body 420 and the circuit board 102. Specific embodiment 2:

[0034] See attached Figure 1 , attached Figure 2 and attached Figure 6 In this embodiment, two connecting strips 110 are added on the basis of the specific embodiment 1. The pressure sensor 104 is arranged on the force measuring body 1, and the connecting strips 410 are arranged on the force measuring body 1 and are respectively located on both sides of the pressure sensor 104. Two strapping grooves 111 can be formed between the connecting strip 110 and the force measuring body 1, and the binding belt passes through the two strapping grooves 111. The two strapping grooves 111 serve as two fulcrums of the binding belt to press the binding belt on the pressure sensor 104; wherein, a clamping mechanism is provided in the inner wall of the strapping groove 111, and the clamping mechanism includes a clamping seat 112 and a clamping spring piece 113 arranged on the clamping seat 112. The clamping mechanism composed of the clamping seat 112 and the clamping spring piece 113 belongs to the prior art. A waist-shaped groove 114 is provided on the inner wall of the opening of the U-shaped opening section 5, and a waist hole 115 is provided in the waist-shaped groove 114. The waist hole 115 is connected to the strapping groove 111, and the clamping seat is arranged in the waist-shaped groove 114 and is supported and fixed by the side cover body 4. The clamping spring piece is arranged in the waist hole 115 and partially extends into the strapping groove 111, which is used for limiting and fixing the binding belt in the strapping groove 111.

[0035] When the strap pre-tensioning force monitor is used, the strap pre-tensioning force monitor is clipped onto the strap, and then tightened by pressing the spring sheet 113. The strap is inserted into the two strap slots 111 and the strap is pressed on the pressure sensor 104. The tension of the strap is determined by the pressure signal detected by the pressure sensor 104. The greater the tension of the strap, the greater the pressure on the pressure sensor 104. Therefore, it is possible to determine whether the strap is in a tightened state by comparing the detected pressure value with the preset pressure value. During the strap bundling operation, the tension of the strap can be conveniently detected by the strap pre-tensioning force testing device. After bundling is completed, the strap is ensured to be in a tightened state to prevent the goods from scattering due to the loosening of the tightening strap, which is conducive to ensuring the safe transportation of the goods.

[0036] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A pull-out housing structure of a strap preload monitor, Its characteristics are: The force measuring body comprises an upper cover body and a lower cover body. The upper cover body is provided with a U-shaped opening section. The U-shaped opening section is provided with a plurality of sliding grooves with two ends passing therethrough. The lower cover body is slidably connected in the sliding grooves. Side cover bodies are provided at both ends of the U-shaped opening section, and the side cover bodies include side cover body 1 and side cover body 2. Several connecting sections are provided on side cover body 2, and an L-shaped cross structure is formed between side cover body 2 and the connecting section. The connecting section is fixedly connected to the circuit board. The U-shaped opening section includes several side sections, and the side sections are in a "bow"-shaped structure, so that a slide groove 1 and a slide groove 2 are formed on the opposite side of the side edges. The side wall of the lower cover body and the protrusion on the side cover body 2 are slidably connected in the slide groove 1, and the convex strip on the side cover body is slidably connected in the slide groove 2, and the two ends of the lower cover body are connected to the mounting grooves on the side cover body.

2. The pull-out housing structure of the strap preload monitor according to claim 1, Its characteristics are: There are protrusions on the two side walls of the side cover body, and the protrusions are connected in the slide groove. There are mounting grooves on the side cover body, and both ends of the lower cover body are connected in the mounting grooves. The two ends of the mounting grooves are through-connected. There are two protrusions in total. The distance between the end walls of the protrusions at both ends of the side cover body is the same as the width of the lower cover body, and the lower cover body can achieve a small deformation.

3. The pull-out housing structure of the strap preload monitor according to claim 2, Its characteristics are: A charging connector is arranged in the force measuring body, a rectangular boss is arranged on the side cover body 1, the charging connector is connected in the rectangular boss, and the side cover body 1 and the charging connector form a connecting assembly.

4. The pull-out housing structure of the strap preload monitor according to claim 3, Its characteristics are: A through T-shaped cavity is provided in the rectangular boss, and the T-shaped cavity includes a connected cavity one and a cavity two, the width of cavity one is greater than that of cavity two, the charging connector is connected to the limit plate, the limit plate is installed in cavity one, and the charging connector is installed in cavity two. The limit plate in cavity one can be fastened by screws, and a threaded hole is provided on the rectangular boss, and the threaded hole is connected to cavity one.

5. The pull-out housing structure of the strap preload monitor according to claim 3, Its characteristics are: A circuit board is arranged in the force measuring body, convex strips are arranged on both side walls of the second side cover body, the convex strips are connected in the second slide groove, the circuit board is connected to the connecting section, and the circuit board is installed and fixed on the second side cover body.

6. A pull-out housing structure of a strap preload monitor according to any one of claims 1 to 5, Its characteristics are: The U-shaped opening section includes a main section and several side sections. The slide groove one and the slide groove two form a fixed groove on the side facing away from the side. The fixed groove is arranged between the slide groove one and the slide groove two. The side sections are arranged at both ends of the main section, and the two are arranged vertically. The side cover body can be fixedly connected by screws installed in the fixed groove.

7. The pull-out housing structure of the strap preload monitor according to claim 3, Its characteristics are: A small cover plate is provided on the side cover body one away from the side of the rectangular boss, a circular through hole is provided on the side cover body one, a cylinder is provided on the small cover plate, a frustum is provided on the cylinder, the bottom circle of the frustum is larger than the diameter of the cross-section circle of the circular through hole, the cylinder and the frustum pass through the circular through hole, so that the side cover body one is located between the frustum and the small cover plate, and the position of the cylinder between the frustum and the small cover plate is adjustable.

8. The pull-out housing structure of the strap preload monitor according to claim 6, Its characteristics are: A power supply and a circuit board are installed in the force measuring body. The power supply and the circuit board are connected by a wire. A power button is installed on the circuit board. The circuit board and the charging connector are connected by a wire. A round hole is provided on the lower cover. The power button is connected in the round hole. A cylindrical mounting shell is provided outside the power button. The edge of the mounting shell surface is provided with chamfered corners. The wiring plug connected to the circuit board is arranged horizontally.

9. A pull-out housing structure of a strap pre-tensioning force monitor according to claim 1 or 2 or 3 or 4 or 5 or 8, Its characteristics are: A pressure sensor is provided on the force measuring body, and a plurality of connecting strips are provided on the force measuring body. The connecting strips are arranged on both sides of the pressure sensor. Two belt grooves are formed between the connecting strips and the force measuring body. The two belt grooves serve as two fulcrums of the binding belt to press the binding belt on the pressure sensor.

10. The pull-out housing structure of the strap preload monitor according to claim 9, Its characteristics are: A clamping mechanism is provided on the inner wall of the belt groove, and the clamping mechanism includes a clamping seat and a clamping spring arranged on the clamping seat. A waist-shaped groove is provided on the inner wall of the opening of the U-shaped opening section, and a waist hole is provided in the waist-shaped groove. The waist hole is connected with the belt groove. The clamping seat is arranged in the waist-shaped groove and is supported and fixed by the side cover body. The clamping spring is arranged in the waist hole and partially extends into the belt groove.

Images