Stroke sensor protection device

Abstract

The invention provides a stroke sensor protection device, and relates to the field of sensor protection. The stroke sensor protection device comprises a protection box assembly, a stroke sensor, an internal toggle mechanism and an external lever assembly. The external lever assembly drives the internal shifting mechanism to swing upwards, the internal shifting mechanism shifts the stroke sensor to work, the swing angle of the internal shifting mechanism is limited by the protection box assembly, the situation that shifting of the stroke sensor by the internal shifting mechanism exceeds the stroke is reduced, and when an object leaves the external lever assembly, the internal shifting mechanism swings upwards and automatically returns. Firstly, an object is not in direct contact with the stroke sensor, the situation that the stroke sensor exceeds the maximum stroke and is damaged due to the impact force of the object is reduced, secondly, the stroke sensor is protected inside through the protection box assembly, and the situation that the stroke sensor is damaged due to external rainwater or water in a use environment is reduced. And electric appliances in the stroke sensor are damaged due to short circuit.

Description

Technical Field

[0001] The present application relates to the technical field of sensor protection, and in particular to a travel sensor protection device. Background Art

[0002] The travel switch is a type of travel sensor. It detects the position or motion state of an object by mechanical means and converts it into an electrical signal. When the object reaches the predetermined position, the travel switch will be triggered, thereby sending a signal, and the control circuit can perform corresponding operations based on this, such as stopping, reversing or changing the working state of the machine. It is mainly composed of a roller, an operating mechanism, a contact system and a shell. The roller is the direct acting part of the travel switch, usually made of metal or solid plastic. It is installed on the outside of the travel switch to receive the action of external mechanical force. When the roller is pushed, it will drive the operating mechanism to swing, converting the movement of the roller into the action of the internal contact, and realizing the control of the circuit through the action of the contact. The shell is the protective layer of the travel switch, usually made of metal or plastic.

[0003] The operating mechanism structure of the stroke sensor in the related art is relatively weak. When an object hits the roller and the operating mechanism, due to the lack of corresponding protection of the operating mechanism, on the one hand, the operating mechanism is easily damaged due to the impact force of the object exceeding the maximum stroke. On the other hand, the stroke sensor is directly exposed to the outside. When the seal of the stroke sensor fails, it is easy for the internal electrical appliances of the stroke sensor to be short-circuited and damaged due to external rain or water in the use environment. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a travel sensor protection device, which has the effect of protecting the travel sensor from exceeding the maximum travel and reducing the damage caused by water ingress to the travel sensor.

[0005] A travel sensor protection device according to an embodiment of the present application includes: a protection box assembly, a travel sensor, an internal toggle mechanism and an external lever assembly.

[0006] The travel sensor is fixedly connected to the inner wall of the rear side of the protection box assembly, the internal toggle mechanism is located inside the protection box assembly, and the lower end of the internal toggle mechanism rotates through the inner wall of the front side of the protection box assembly, the protection box assembly can limit the swing angle of the internal toggle mechanism, and the lower end of the external lever assembly is fixedly sleeved on one end of the internal toggle mechanism extending out of the protection box assembly.

[0007] According to some embodiments of the present application, the protection box assembly includes a protection box, a rear seal mounting member, a first hanging ring, a cabin tube, a limiting rod, a fixing seat and a connecting seat. A mounting hole is opened on the rear side of the protection box, and the inner side of the rear seal mounting member passes through the mounting hole and is inserted into the interior of the protection box. The travel sensor is fixedly connected to the inner side of the rear seal mounting member, and the outer side of the rear seal mounting member is fixed to the rear side of the protection box by bolts. The first hanging ring is inside one end of the front side, and the cabin tube is fixedly passed through the lower part of the other end of the front side of the protection box. The lower part of the internal toggle mechanism The end rotates and passes through the through-cabin tube, and two limit rods are provided. The two limit rods are fixedly connected to the upper part of the front side of the protection box, and the two limit rods are respectively located on the left and right sides of the through-cabin tube. The internal toggle mechanism swings between the two limit rods, and one side of the upper end of the internal toggle mechanism is hung on the first hanging ring, and the other side of the upper end of the internal toggle mechanism can toggle the roller of the travel sensor. The fixing seat is fixedly connected to the outside of the left and right sides of the protection box, and the connecting seat is fixedly connected to the fixing seat by bolts and nuts.

[0008] According to some embodiments of the present application, the protective box includes a folding front box body, a sealing plate and a rear mounting plate, the top and bottom of the folding front box body are sealed by two sealing plates, the periphery of the rear mounting plate is fixedly connected to the rear side of the folding front box body and the sealing plates at the top and bottom, the folding front box body, the two sealing plates and the rear mounting plate form a square box body, and the mounting hole is opened on the rear mounting plate.

[0009] According to some embodiments of the present application, the rear sealing mounting member includes a rear seat plate and a bending seat, the bending seat is fixedly connected to the inner side of the rear seat plate, the stroke sensor is fixedly connected to the bending seat, the bending seat passes through the mounting hole, and the rear seat plate is fixed to the rear side of the protective box by bolts.

[0010] According to some embodiments of the present application, the internal toggle mechanism includes a through-cabin sealing shaft, an inner connecting tube, an outer connecting tube, an inner toggle rod, a toggle plate, a tension spring and a second hanging ring, the through-cabin sealing shaft rotates and passes through the through-cabin tube, the inner connecting tube is fixedly sleeved on one end of the through-cabin sealing shaft located inside the protection box, the inner toggle rod is fixedly connected to the outside of the inner connecting tube, the inner toggle rod can swing between the two limit rods, the toggle plate is fixedly connected to the side wall on the inner side of the upper end of the inner toggle rod, and as the toggle plate swings, the toggle plate can press and drive the roller of the travel sensor, the second hanging ring is fixedly connected to the outer wall of the inner toggle rod, one end of the tension spring is hung on the second hanging ring, and the other end of the tension spring is hung on the first hanging ring, the outer connecting tube is fixedly sleeved on one end of the through-cabin sealing shaft located outside the protection box, and the lower end of the external lever assembly is fixedly sleeved on the outer connecting tube.

[0011] According to some embodiments of the present application, an annular sealing groove is provided on the cabin penetration sealing shaft, a sealing ring is sleeved on the annular sealing groove, and the sealing ring compresses and seals the cabin penetration tube through elastic deformation.

[0012] According to some embodiments of the present application, the through-cabin sealing shaft component includes a through-cabin shaft, an inner limiting ring, a flat key and an elastic retaining ring, the annular sealing groove is opened on the through-cabin shaft, the inner limiting ring is fixedly connected to one end of the through-cabin shaft located in the protection box, the inner connecting tube is connected to the through-cabin shaft through the flat key, the inner limiting ring blocks the inner connecting tube, the elastic retaining ring is elastically deformed and sleeved on one end of the through-cabin shaft located outside the protection box, the outer connecting tube is also connected to the through-cabin shaft through the flat key, and the elastic retaining ring blocks the outer connecting tube.

[0013] According to some embodiments of the present application, the external lever assembly includes a swing lever frame and a swing wheel, the swing wheel is arranged at the top of the swing lever frame, and the lower end of the swing lever frame is fixedly sleeved on one end of the internal toggle mechanism extending out of the protective box assembly.

[0014] According to some embodiments of the present application, reinforcing ribs are provided on the outer side of the swing lever frame, a connecting bolt rod is inserted into the top end of the swing lever frame, the connecting bolt rod passes through the swing wheel, the connecting bolt rod passes through one end of the swing wheel and is threadedly sleeved with a clamping nut, and the clamping nut clamps the swing wheel.

[0015] The beneficial effects of the present application are as follows: an object contacts the external lever assembly, the external lever assembly swings around the connection at the lower end of the external lever assembly, the external lever assembly drives the internal toggle mechanism to swing upward, the internal toggle mechanism toggle the stroke sensor to work, and the swing angle of the internal toggle mechanism is limited by the protection box assembly, thereby reducing the internal toggle mechanism from toggling the stroke sensor beyond the stroke. When the object leaves the external lever assembly, the internal toggle mechanism swings upward and automatically returns to its original position. Firstly, the object does not directly contact the stroke sensor, thereby reducing the possibility of the stroke sensor being damaged due to the impact force of the object exceeding the maximum stroke. Secondly, the stroke sensor is protected inside by the protection box assembly, thereby reducing the possibility of short-circuit damage to the internal electrical appliances of the stroke sensor due to external rain or water in the use environment.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a schematic diagram of the three-dimensional structure of the travel sensor protection device according to an embodiment of the present application from a first viewing angle; Figure 2 is a schematic diagram of the three-dimensional structure of the stroke sensor protection device according to the embodiment of the present application from a second viewing angle; Figure 3 is a schematic diagram of the three-dimensional structure of a protection box assembly according to an embodiment of the present application; Figure 4 is a schematic diagram of the three-dimensional structure of a protection box according to an embodiment of the present application; Figure 5 is a schematic diagram of the three-dimensional structure of a rear sealing mounting member according to an embodiment of the present application; Figure 6 is a schematic diagram of the three-dimensional structure of the internal toggle mechanism according to an embodiment of the present application; Figure 7 is a schematic diagram of the three-dimensional structure of a cabin penetration sealing shaft according to an embodiment of the present application; Figure 8 is a schematic diagram of the three-dimensional structure of an external lever assembly according to an embodiment of the present application; Fig. 9 It is a schematic diagram of the three-dimensional structure without a swing wheel in the external lever assembly according to an embodiment of the present application.

[0019] Icons: 100-protection box assembly; 110-protection box; 111-bending front box body; 112-sealing plate; 113-rear mounting plate; 120-mounting hole; 130-rear sealing mounting piece; 131-rear seat plate; 132-bending seat; 140-first hanging ring; 150-cabin tube; 160-limiting rod; 170-fixing seat; 180-connecting seat; 200-travel sensor; 300-internal toggle mechanism; 310-cabin sealing shaft Parts; 311-cabin-penetrating shaft; 312-inner limit ring; 313-flat key; 314-elastic retaining ring; 320-inner connecting tube; 330-outer connecting tube; 340-sealing ring; 350-inner toggle rod; 360-toggle plate; 370-tension spring; 380-second hanging ring; 400-external lever assembly; 410-swing lever frame; 420-swing wheel; 430-connecting bolt rod; 440-tightening nut; 450-reinforcement rib. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0021] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] The travel sensor protection device according to the embodiment of the present application is described below with reference to the accompanying drawings.

[0023] See also Figures 1 to 9 According to the embodiment of the present application, the travel sensor protection device includes: a protection box assembly 100, a travel sensor 200, an internal toggle mechanism 300 and an external lever assembly 400.

[0024] See also Figure 1 to Figure 2The travel sensor 200 is fixedly connected to the inner wall of the rear side of the protection box assembly 100, the internal toggle mechanism 300 is located in the protection box assembly 100, and the lower end of the internal toggle mechanism 300 rotates and passes through the inner wall of the front side of the protection box assembly 100. The protection box assembly 100 can limit the swing angle of the internal toggle mechanism 300, and the lower end of the external lever assembly 400 is fixedly sleeved on one end of the internal toggle mechanism 300 extending out of the protection box assembly 100. When the object contacts the external lever assembly 400, the external lever assembly 400 swings around the connection at the lower end of the external lever assembly 400, and the external lever assembly 400 drives the internal toggle mechanism 300 to swing upward, and the internal toggle mechanism 300 toggle the stroke sensor 200 to work. The swing angle of the internal toggle mechanism 300 is limited by the protection box assembly 100, which reduces the internal toggle mechanism 300 from toggling the stroke sensor 200 beyond the stroke. When the object leaves the external lever assembly 400, the internal toggle mechanism 300 swings upward and automatically returns to its original position. Firstly, the object does not directly contact the stroke sensor 200, which reduces the situation where the stroke sensor 200 is damaged due to the impact force of the object exceeding the maximum stroke. Secondly, the stroke sensor 200 is protected inside by the protection box assembly 100, which reduces the situation where the internal electrical appliances of the stroke sensor are short-circuited and damaged due to external rain or water in the use environment.

[0025] See also Figures 1 to 3The protection box assembly 100 includes a protection box 110, a rear seal mounting member 130, a first hanging ring 140, a cabin tube 150, a limit rod 160, a fixing seat 170 and a connecting seat 180. A mounting hole 120 is opened on the rear side of the protection box 110. The inner side of the rear seal mounting member 130 passes through the mounting hole 120 and is inserted into the interior of the protection box 110. The travel sensor 200 is fixedly connected to the inner side of the rear seal mounting member 130. The outer side of the rear seal mounting member 130 is fixed to the rear side of the protection box 110 by bolts. The first hanging ring 140 has an inner side at one end of the front side, and the cabin tube 150 is fixedly passed through the lower part of the other end of the front side of the protection box 110. The internal toggle mechanism The lower end of the structure 300 rotates and passes through the cabin tube 150. Two limit rods 160 are set. The two limit rods 160 are fixedly connected to the upper part of the inner front side of the protection box 110. The two limit rods 160 are respectively located on the left and right sides of the cabin tube 150. The internal toggle mechanism 300 swings between the two limit rods 160. One side of the upper end of the internal toggle mechanism 300 is hung on the first hanging ring 140, and the other side of the upper end of the internal toggle mechanism 300 can toggle the roller of the travel sensor 200. The fixed seat 170 is fixedly connected to the outside of the left and right sides of the protection box 110, and the connecting seat 180 is fixedly connected to the fixed seat 170 by bolts and nuts. The connecting base 180 is connected to an external device, the fixing base 170 connects the protective box 110 to the connecting base 180, the rear sealing mounting member 130 is used to install the stroke sensor 200, and the rear sealing mounting member 130 seals the back of the protective box 110 to close the inside of the protective box 110, and the stroke sensor 200 is protected inside the protective box 110 to reduce the possibility of short circuit damage to the internal electrical appliances of the stroke sensor due to external rain or water in the use environment. The lower end of the external lever assembly 400 swings around the cabin tube 150, and the external lever assembly 400 drives the internal toggle mechanism 300 to overcome the elastic force and swing upward, and the internal toggle mechanism 300 drives the stroke sensor 200 to move. One of the limit rods 160 limits the upward swing angle of the internal toggle mechanism 300 to protect the internal toggle mechanism 300 from driving the stroke sensor 200 to exceed the maximum stroke. After the object leaves the external lever assembly 400, the internal toggle mechanism 300 swings downward under the action of the elastic force and resists the other limit rod 160. The other limit rod 160 limits the downward swing angle of the internal toggle mechanism 300, and the object does not directly contact the stroke sensor 200, thereby reducing the possibility that the stroke sensor 200 exceeds the maximum stroke and is damaged due to the impact force of the object.

[0026] See also Figures 1 to 4The protection box 110 includes a bent front box body 111, a sealing plate 112 and a rear mounting plate 113. The top and bottom of the bent front box body 111 are sealed by two sealing plates 112. The periphery of the rear mounting plate 113 is fixedly connected to the rear side of the bent front box body 111 and the sealing plates 112 at the top and bottom. The bent front box body 111, the two sealing plates 112 and the rear mounting plate 113 form a square box body, and the mounting hole 120 is opened on the rear mounting plate 113. The protection box 110 is sealed into a box body with a mounting hole 120 on the back by the bent front box body 111, the two sealing plates 112 and the rear mounting plate 113. The travel sensor 200 extends into the protection box 110 through the mounting hole 120, and then the mounting hole 120 is sealed by the rear sealing mounting member 130.

[0027] See also Figures 1 to 5 The rear sealing mounting member 130 includes a rear seat plate 131 and a bending seat 132. The bending seat 132 is fixedly connected to the inner side of the rear seat plate 131. The travel sensor 200 is fixedly connected to the bending seat 132. The bending seat 132 passes through the mounting hole 120. The rear seat plate 131 is fixed to the rear side of the protection box 110 by bolts. The rear seat plate 131 is used to seal the mounting hole 120 on the rear mounting plate 113, and the bending seat 132 is used to install the travel sensor 200.

[0028] See also Figures 1 to 6The internal toggle mechanism 300 includes a cabin penetration sealing shaft 310, an inner connecting tube 320, an outer connecting tube 330, a sealing ring 340, an inner toggle rod 350, a toggle plate 360, a tension spring 370 and a second hanging ring 380. The cabin penetration sealing shaft 310 rotates and penetrates the cabin penetration tube 150. An annular sealing groove is provided on the cabin penetration sealing shaft 310. A sealing ring 340 is sleeved on the annular sealing groove. The sealing ring 340 compresses and seals the cabin penetration tube 150 through elastic deformation. The inner connecting tube 320 is fixedly sleeved on one end of the cabin penetration sealing shaft 310 located in the protection box 110. The inner toggle rod 350 is fixedly connected to the outer of the inner connecting tube 320. On the side, the inner toggle rod 350 can swing between the two limit rods 160, the toggle plate 360 ​​is fixedly connected to the side wall on the inner side of the upper end of the inner toggle rod 350, and as the toggle plate 360 ​​swings, the toggle plate 360 ​​can press and drive the roller of the travel sensor 200, the second hanging ring 380 is fixedly connected to the outer wall of the inner toggle rod 350, one end of the tension spring 370 is hung on the second hanging ring 380, and the other end of the tension spring 370 is hung on the first hanging ring 140, the outer connecting tube 330 is fixedly sleeved on one end of the through-cabin sealing shaft 310 located outside the protection box 110, and the lower end of the external lever assembly 400 is fixedly sleeved on the outer connecting tube 330. The through-cabin sealing shaft 310 and the through-cabin cylinder 150 are sealed by a sealing ring 340. The through-cabin sealing shaft 310 passes through and is rotatably connected in the through-cabin cylinder 150. The through-cabin sealing shaft 310 and the through-cabin cylinder 150 are sealed. The inner connecting cylinder 320 and the outer connecting cylinder 330 rotate along with the through-cabin sealing shaft 310. The outer lever assembly 400 drives the outer connecting cylinder 330. The outer connecting cylinder 330 drives the inner connecting cylinder 320 through the through-cabin sealing shaft 310. The inner connecting cylinder 320 drives the inner toggle rod 350 to swing. The rod 350 moves the roller of the travel sensor 200 through the toggle plate 360, and the inner toggle rod 350 pulls one end of the tension spring 370 through the second hanging ring 380, and the other end of the tension spring 370 is hung in the protection box 110 through the first hanging ring 140. When the inner toggle rod 350 swings upward, the tension spring 370 stretches and the elastic force increases. Conversely, under the elastic force of the tension spring 370, the inner toggle rod 350 swings downward and returns to its original position, and the two limit rods 160 limit the upward and downward swinging angles of the inner toggle rod 350.

[0029] See also Figures 1 to 7The through-cabin sealing shaft 310 includes a through-cabin shaft 311, an inner limit ring 312, a flat key 313 and an elastic retaining ring 314. An annular sealing groove is provided on the through-cabin shaft 311. The inner limit ring 312 is fixedly connected to one end of the through-cabin shaft 311 located inside the protection box 110. The inner connecting tube 320 is connected to the through-cabin shaft 311 through the flat key 313. The inner limit ring 312 blocks the inner connecting tube 320. The elastic retaining ring 314 is elastically deformed and sleeved on one end of the through-cabin shaft 311 located outside the protection box 110. The outer connecting tube 330 is also connected to the through-cabin shaft 311 through the flat key 313. The elastic retaining ring 314 blocks the outer connecting tube 330. The limiting ring 312 and the inner side of the through-cabin tube 150 limit the two ends of the inner connecting tube 320, the elastic retaining ring 314 and the outer side of the through-cabin tube 150 limit the two ends of the outer connecting tube 330, and the inner connecting tube 320 and the outer connecting tube 330 are both connected to the through-cabin shaft 311 through the flat key 313, so that the inner connecting tube 320 and the outer connecting tube 330 rotate with the through-cabin shaft 311 through the flat key 313.

[0030] See also Figures 1 to 8 The external lever assembly 400 includes a swing lever frame 410 and a swing wheel 420. The swing wheel 420 is disposed at the top of the swing lever frame 410. The lower end of the swing lever frame 410 is fixedly sleeved on an end of the internal toggle mechanism 300 extending out of the protection box assembly 100. The swing wheel 420 contacts the object to reduce the damage to the object caused by the swing lever frame 410. The object drives the swing lever frame 410 to swing through the swing wheel 420.

[0031] See also Figures 1 to 9 The outer side of the swing lever frame 410 is provided with a reinforcing rib 450, the top of the swing lever frame 410 is plugged with a connecting bolt rod 430, the connecting bolt rod 420 passes through the swing wheel 420, and one end of the connecting bolt rod 430 passes through the swing wheel 420 and is connected with a clamping nut 440 through a thread sleeve, and the clamping nut 440 clamps the swing wheel 420. The strength of the swing lever frame 410 is strengthened by the reinforcing rib 450, and the swing wheel 420 is connected by the connecting bolt rod 430 and the clamping nut 440. When the swing wheel 420 needs to be replaced, the clamping nut 440 is screwed off, and the connecting bolt rod 430 can be pulled out, so that the swing wheel 420 is separated from the connecting bolt rod 430. After replacing the swing wheel 420, it is reinstalled in the reverse order to facilitate the replacement of the swing wheel 420.

[0032] Specifically, the working principle of the stroke sensor protection device is as follows: the connecting seat 180 is connected to the external device, the fixing seat 170 connects the protection box 110 to the connecting seat 180, the rear sealing mounting member 130 is used to install the stroke sensor 200, and the rear sealing mounting member 130 seals the back of the protection box 110 to make the inside of the protection box 110 closed, and the stroke sensor 200 is protected inside the protection box 110, thereby reducing the possibility of short circuit damage to the internal electrical appliances of the stroke sensor due to external rain or water in the use environment. The object contacts the swing wheel 420 to reduce the damage of the swing lever frame 410 to the object. The object drives the swing lever frame 410 to swing through the swing wheel 420. The lower end of the swing lever frame 410 drives the outer connecting tube 330 to rotate together with the cabin penetration shaft 311 in the cabin penetration tube 150. The cabin penetration shaft 311 drives the inner connecting tube 320 to rotate. The inner connecting tube 320 drives the inner toggle rod 350 to swing. The inner toggle rod 350 toggles the roller of the travel sensor 200 through the toggle plate 360. The inner toggle rod 350 pulls one end of the tension spring 370 through the second hanging ring 380 to pull The other end of the extension spring 370 is hung in the protection box 110 through the first hanging ring 140. When the inner toggle rod 350 swings upward, the extension spring 370 stretches and the elastic force increases. One of the limit rods 160 limits the upward swing angle of the inner toggle rod 350, and the protection toggle plate 360 ​​drives the movement of the stroke sensor 200 to exceed the maximum stroke. On the contrary, when the object leaves the swing wheel 420, under the elastic force of the extension spring 370, the inner toggle rod 350 swings downward and returns to its position, and the two limit rods 160 limit the upward and downward swing angles of the inner toggle rod 350. First, the object does not directly contact the stroke sensor 200, reducing the situation where the stroke sensor 200 exceeds the maximum stroke and is damaged due to the impact force of the object. Second, the stroke sensor 200 is protected inside by the protection box 110, reducing the situation where the internal electrical appliances of the stroke sensor are short-circuited and damaged due to external rain or water in the use environment.

[0033] It should be noted that the specific model and specifications of the travel sensor 200 need to be selected and determined according to the actual specifications of the device, and the specific selection and calculation method adopts the existing technology in the field, so it will not be repeated in detail.

[0034] The power supply and principle of the travel sensor 200 are clear to those skilled in the art and will not be described in detail here.

[0035] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A travel sensor protection device, characterized in that: include: Protective box assembly (100); A travel sensor (200), the travel sensor (200) being fixedly connected to the inner side wall of the rear side of the protection box assembly (100); an internal toggle mechanism (300), the internal toggle mechanism (300) being located in the protection box assembly (100), and the lower end of the internal toggle mechanism (300) being rotatably passed through the inner side wall of the front side of the protection box assembly (100), and the protection box assembly (100) being capable of limiting the swing angle of the internal toggle mechanism (300); An external lever assembly (400), wherein the lower end of the external lever assembly (400) is fixedly sleeved on an end of the internal toggle mechanism (300) extending out of the protection box assembly (100).

2. The travel sensor protection device according to claim 1, characterized in that: The protection box assembly (100) comprises a protection box (110), a rear seal mounting member (130), a first hanging ring (140), a cabin tube (150), a limit rod (160), a fixing seat (170) and a connecting seat (180); a mounting hole (120) is provided on the rear side of the protection box (110); the inner side of the rear seal mounting member (130) passes through the mounting hole (120) and is inserted into the interior of the protection box (110); the travel sensor (200) is fixedly connected to the inner side of the rear seal mounting member (130); the outer side of the rear seal mounting member (130) is fixedly fixed to the rear side of the protection box (110) by bolts; the first hanging ring (140) is inside one end of the front side; the cabin tube (150) is fixedly passed through the lower part of the other end of the front side of the protection box (110); the internal shifting mechanism The lower end of the structure (300) rotates and penetrates the cabin tube (150), the limiting rods (160) are arranged in two, the two limiting rods (160) are fixedly connected to the upper part of the front side of the protection box (110), the two limiting rods (160) are respectively located on the left and right sides of the cabin tube (150), the internal toggle mechanism (300) swings between the two limiting rods (160), one side of the upper end of the internal toggle mechanism (300) is hung on the first hanging ring (140), and the other side of the upper end of the internal toggle mechanism (300) can toggle the roller of the travel sensor (200), the fixing seat (170) is fixedly connected to the outside of the left and right sides of the protection box (110), and the connecting seat (180) is fixedly connected to the fixing seat (170) by bolts and nuts.

3. The travel sensor protection device according to claim 2, characterized in that: The protection box (110) comprises a front bending box body (111), a sealing plate (112) and a rear mounting plate (113); the top and bottom of the front bending box body (111) are sealed by two sealing plates (112); the periphery of the rear mounting plate (113) is fixedly connected to the rear side of the front bending box body (111) and the sealing plates (112) at the top and bottom; the front bending box body (111), the two sealing plates (112) and the rear mounting plate (113) form a square box body; the mounting hole (120) is opened on the rear mounting plate (113).

4. The travel sensor protection device according to claim 2, characterized in that: The rear sealing mounting member (130) comprises a rear seat plate (131) and a bending seat (132); the bending seat (132) is fixedly connected to the inner side of the rear seat plate (131); the travel sensor (200) is fixedly connected to the bending seat (132); the bending seat (132) passes through the mounting hole (120); and the rear seat plate (131) is fixedly fixed to the rear side of the protection box (110) by means of bolts.

5. The travel sensor protection device according to claim 2, characterized in that: The internal toggle mechanism (300) comprises a cabin penetration sealing shaft (310), an inner connecting tube (320), an outer connecting tube (330), an inner toggle rod (350), a toggle plate (360), a tension spring (370) and a second hanging ring (380); the cabin penetration sealing shaft (310) rotates and passes through the cabin penetration tube (150); the inner connecting tube (320) is fixedly sleeved on one end of the cabin penetration sealing shaft (310) located in the protection box (110); the inner toggle rod (350) is fixedly connected to the outer side of the inner connecting tube (320); the inner toggle rod (350) is capable of swinging between the two limit rods (160); the toggle plate (360) is fixedly connected to the second hanging ring (380); The side wall is connected to the inner side of the upper end of the inner toggle rod (350). As the toggle plate (360) swings, the toggle plate (360) can press and drive the roller of the travel sensor (200). The second hanging ring (380) is fixedly connected to the outer wall of the inner toggle rod (350). One end of the tension spring (370) is hung on the second hanging ring (380), and the other end of the tension spring (370) is hung on the first hanging ring (140). The outer connecting tube (330) is fixedly sleeved on one end of the cabin penetration sealing shaft (310) located outside the protection box (110). The lower end of the external lever assembly (400) is fixedly sleeved on the outer connecting tube (330).

6. The travel sensor protection device according to claim 5, characterized in that: An annular sealing groove is formed on the cabin penetration sealing shaft (310), a sealing ring (340) is sleeved on the annular sealing groove, and the sealing ring (340) compresses and seals the cabin penetration tube (150) through elastic deformation.

7. The travel sensor protection device according to claim 5, characterized in that: The cabin penetration sealing shaft component (310) comprises a cabin penetration shaft (311), an inner limiting ring (312), a flat key (313) and an elastic retaining ring (314); the inner limiting ring (312) is fixedly connected to one end of the cabin penetration shaft (311) located inside the protection box (110); the inner connecting tube (320) is connected to the cabin penetration shaft (311) via the flat key (313); the inner limiting ring (312) blocks the inner connecting tube (320); the elastic retaining ring (314) is sleeved on one end of the cabin penetration shaft (311) located outside the protection box (110) through elastic deformation; the outer connecting tube (330) is also connected to the cabin penetration shaft (311) via the flat key (313); the elastic retaining ring (314) blocks the outer connecting tube (330).

8. The travel sensor protection device according to claim 1, characterized in that: The external lever assembly (400) comprises a swing lever frame (410) and a swing wheel (420), wherein the swing wheel (420) is arranged at the top end of the swing lever frame (410), and the lower end of the swing lever frame (410) is fixedly sleeved on an end of the internal toggle mechanism (300) extending out of the protection box assembly (100).

9. The travel sensor protection device according to claim 8, characterized in that: A reinforcing rib (450) is arranged on the outside of the swing lever frame (410), a connecting bolt rod (420) is inserted into the top end of the swing lever frame (410), the connecting bolt rod (420) passes through the swing wheel (420), one end of the connecting bolt rod (420) passes through the swing wheel (420) and is threadedly sleeved with a clamping nut (440), the clamping nut (440) clamps the swing wheel (420).

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