U-shaped photoelectric sensor

Abstract

The invention relates to the technical field of sensors, and particularly discloses a U-shaped photoelectric sensor which comprises a sensor body and a mounting plate, an adjusting mechanism is arranged on the front face of the mounting plate, an assembling seat is fixedly mounted on the front face of the adjusting mechanism, a limiting groove is formed in the right side of the assembling seat, and the assembling seat is connected with the sensor body in an inserted mode through the limiting groove. And a fixing mechanism is arranged on the inner side of the assembling seat. By rotating a second rotating block, a rotating rod connected with the second rotating block rotates on a bottom shell, meanwhile, the rotating rod drives a second bevel gear to be in engaged transmission with a first bevel gear, a second screw rod connected with the first bevel gear rotates in a second sleeve shell, and a mounting block in threaded connection with the outer side of the second screw rod slides; the sensor body can be conveniently adjusted and used in the vertical direction, and therefore through the adjusting function of the sensor body, the requirement for adjustment and use of various different detection objects in the installation and actual use process can be greatly met.

Description

Technical Field

[0001] The invention relates to the technical field of sensors, in particular to a U-shaped photoelectric sensor. Background Art

[0002] Slot-type photoelectric sensor, also known as U-shaped photoelectric sensor, is a slot-shaped photoelectric sensor that is formed by installing a light emitter and a receiver face to face on both sides of a slot. The emitter can emit infrared light or visible light, and the light receiver can receive light without obstruction. However, when the object to be detected passes through the slot, the light is blocked, and the photoelectric switch is activated, outputting a switch control signal, cutting off or connecting the load current, thereby completing a control action.

[0003] A Chinese patent with publication number CN220322407U discloses a slot-type photoelectric sensor, comprising a filter bracket, an infrared emitting lamp, an infrared receiving lamp, a circuit board, an inner shell and an outer shell; the infrared emitting lamp is mounted at one end of the filter bracket, the infrared receiving lamp is mounted at the other end of the filter bracket, the circuit board is mounted on the filter bracket, and the infrared emitting lamp and the infrared receiving lamp are both connected to the circuit board; the inner shell is formed by injection molding on the filter bracket, and the inner shell wraps the infrared emitting lamp, the infrared receiving lamp, a part of the circuit board and a part of the filter bracket.

[0004] During the actual use of the photoelectric sensors in the above-mentioned prior art, we found that there are still some shortcomings. For example, traditional photoelectric sensors are generally installed by directly fixing the sensors at the use position with screws. When the photoelectric sensors need to be disassembled and maintained, they often need to use special disassembly tools to disassemble them from the installation position, which is very inconvenient. Secondly, since traditional photoelectric sensors do not have the function of adjustment, first of all, during installation, once the installation position deviates, it is often necessary to re-drill holes for installation. In addition, when detecting objects of different sizes or styles, when the object cannot pass through the U-shaped groove of the photoelectric sensor, it is also necessary to re-disassemble and adjust the position of the photoelectric sensor according to the position of the object, which is very inconvenient. Summary of the invention

[0005] The object of the present invention is to provide a U-shaped photoelectric sensor to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides a U-shaped photoelectric sensor, comprising a sensor body and a mounting plate, wherein an adjustment mechanism is provided on the front of the mounting plate, an assembly seat is fixedly installed on the front of the adjustment mechanism, a limiting groove is provided on the right side of the assembly seat, the assembly seat is plugged into the sensor body through the limiting groove, a fixing mechanism is provided on the inner side of the assembly seat, the assembly seat is clamped into the sensor body through the fixing mechanism, and a heat dissipation mechanism is symmetrically provided on the outer side of the sensor body;

[0007] The adjusting mechanism comprises a first sleeve, the first sleeve is fixedly mounted on the front side of the mounting plate, the inner side of the first sleeve is rotatably connected with a first screw, one end of the first screw penetrates the shell wall of the first sleeve and is fixedly mounted with a first rotating block, the outer side of the first screw is threadedly connected with a second sleeve, the second sleeve is slidably connected to the inner side of the first sleeve, the lower end of the second sleeve is fixedly mounted with a bottom shell, the inner side of the second sleeve is rotatably connected with a second screw, the lower end of the second screw extends into the inner side of the first bottom shell and is fixedly mounted with a first bevel gear, the inner side of the bottom shell is rotatably connected with a rotating rod, one end of the rotating rod is fixedly mounted with a second bevel gear, the first bevel gear and the second bevel gear are meshingly connected, the end of the rotating rod away from the second bevel gear penetrates the shell wall of the bottom shell and is fixedly mounted with a second rotating block, the outer side of the second screw is threadedly connected with a mounting block, the mounting block is slidably connected to the inner side of the second sleeve, the assembly seat is fixedly mounted by screws and the mounting block, and the adjusting mechanism can be conveniently adjusted according to the position of the object to be measured and the detection end of the sensor body.

[0008] The fixing mechanism comprises a mounting groove, the mounting groove is symmetrically arranged on a side of the assembly seat away from the limiting groove, a guide rod is symmetrically fixedly installed on the inner side of the mounting groove, the outer side of the guide rod is slidably connected with the same U-shaped plate, a spring is sleeved on the outer side of the guide rod, a clamping block is fixedly installed on the side of the U-shaped plate away from the spring, the clamping end of the clamping block is movable and deeply inserted into the inner side of the limiting groove, the clamping end of the clamping block is clamped with the back side of the sensor body, and the sensor body can be quickly disassembled and assembled for use through the fixing mechanism;

[0009] The heat dissipation mechanism includes a positioning groove and a heat dissipation seat, the positioning groove is symmetrically arranged on the outside of the sensor body, a through hole is arranged on the inside of the positioning groove, the through hole and the inside of the sensor body are connected to each other, the heat dissipation seat is fixedly installed on the inside of the positioning groove by screws, a heat dissipation fin is fixedly connected to one side of the heat dissipation seat, a heat pipe is fixedly installed on the other side of the heat dissipation seat away from the heat dissipation fin, and the heat pipe part of the heat dissipation seat extends into the inside of the through hole. Through the heat dissipation mechanism, the sensor body can be conveniently heat-dissipated and protected.

[0010] Furthermore, a first screw sleeve is fixedly installed on the inner side of the second casing, and the second casing is threadedly connected to the outer side of the first screw rod through the first screw sleeve. The second casing can be conveniently threadedly connected to the first casing through the first screw sleeve.

[0011] Furthermore, a first slide bar is symmetrically fixedly installed on the inner side of the first shell, and the second shell is slidably connected to the outer side of the first slide bar. Through the first slide bar, the second shell can be conveniently slidably connected to the inner side of the first shell.

[0012] Furthermore, a second screw sleeve is fixedly installed on the inner side of the mounting block, and the mounting block is threadedly connected to the outer side of the second screw rod through the second screw sleeve. The mounting block can be conveniently threadedly connected to the inner side of the second housing through the second screw sleeve.

[0013] Furthermore, a second slide bar is symmetrically fixedly installed on the inner side of the second shell, and the mounting block is slidably connected to the outer side of the second slide bar. The mounting block can be conveniently slidably connected to the inner side of the second shell through the second slide bar.

[0014] Furthermore, a support plate is fixedly installed on the inner side of the bottom shell, one end of the rotating rod is rotatably connected to the inner side of the support plate, one end of the rotating rod passes through the support plate and the second bevel gear and is fixedly installed, and the supporting plate can conveniently support the rotating rod on the inner side of the bottom shell.

[0015] Furthermore, a limiting block is fixedly connected to the back of the sensor body, and the sensor body is plugged in through the limiting block and the limiting groove. The back of the sensor body is symmetrically provided with card slots, and the card-in end of the card block is card-engaged with the card slot. The limiting block can facilitate the plugging of the sensor body and the limiting groove, and the card slot can facilitate the card block to be carded and fixed to the sensor body.

[0016] Furthermore, a heat dissipation groove is provided on the outer side of the magnetic sheet of the heat sink fin, and the groove shape of the heat dissipation groove is U-shaped. A positioning frame is fixedly installed on the side of the heat sink close to the heat pipe, and the heat sink is plugged into the positioning frame and one end of the through hole. The inner side of the heat sink is symmetrically provided with mounting holes, and the heat sink is fixedly installed by screws penetrating the mounting holes and the positioning grooves. The heat dissipation surface of the heat sink fin can be increased and the heat dissipation efficiency can be improved through the heat dissipation groove, and the heat sink can be conveniently installed in the positioning groove through the positioning frame and the mounting hole.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] Firstly, in the present invention, when the sensor body needs to be adjusted according to the position of the object to be measured, the first rotary block is rotated so that the first rotary block drives the first screw to rotate inside the first housing, and at the same time, the second housing connected to the outer thread of the first screw can slide, so that the left and right position of the sensor body can be conveniently adjusted. By rotating the second rotary block, the rotating rod connected to the second rotary block rotates on the bottom housing, and at the same time, the rotating rod drives the second bevel gear to mesh with the first bevel gear, and the second screw connected to the first bevel gear rotates in the second housing, so that the mounting block connected to the outer thread of the second screw slides, which can facilitate the adjustment of the upper and lower positions of the sensor body. Therefore, through the adjustment function of the sensor body, it can greatly meet the needs of installation and adjustment for a variety of different detection objects during actual use.

[0019] Secondly, in the present invention, the sensor body is inserted along the limiting groove on one side of the assembly seat, and during the insertion, the sensor body squeezes the card block extending out of the limiting groove, and the same U-shaped plate connected to the card block can slide on the guide rod inside the mounting groove and squeeze the spring until the sensor body is inserted into the assembly seat, and the card slot on the sensor body and the card-in end position of the card block correspond, the spring elastically resets and pushes the card block connected to the U-shaped plate, so that the card-in end of the card block is carded into the card slot on the back of the sensor body to fix it. When disassembling and maintaining the sensor body, there is no need to use any auxiliary tools, only need to push the U-shaped plate to move at the mounting groove, so that the card block on the U-shaped plate and the card slot on the sensor body can be separated, and then the sensor body can be moved out along the direction of the limiting groove notch, thereby greatly facilitating the disassembly and assembly of the sensor body.

[0020] Thirdly, in the present invention, when the circuit board and electronic components inside the sensor body emit heat during use, the heat is absorbed by the heat pipe on the heat sink, and at the same time, the heat is quickly dissipated through the heat sink fins on the other side of the heat sink, thereby greatly reducing the possibility of component failure caused by internal heat collection of the sensor body due to long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the back structure of the sensor body in the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the regulating mechanism in the present invention;

[0024] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5It is a schematic diagram of the structure of the assembly seat in the present invention;

[0026] Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle;

[0027] Figure 7 It is a schematic diagram of the installation of the heat sink and the sensor body in the present invention;

[0028] Figure 8 It is a schematic diagram of the heat sink structure in the present invention.

[0029] In the figure: 1, mounting plate; 2, adjusting mechanism; 201, first housing; 202, first rotary block; 203, first screw; 204, second housing; 205, second screw; 206, mounting block; 207, second rotary block; 208, bottom housing; 209, rotating rod; 2010, first bevel gear; 2011, second bevel gear; 3, assembly seat; 4, sensor body; 5, fixing mechanism; 501, mounting groove; 502, Guide rod; 503, spring; 504, U-shaped plate; 505, clamping block; 6, heat dissipation mechanism; 601, positioning groove; 602, through hole; 603, heat sink; 604, heat dissipation fin; 605, heat pipe; 7, clamping groove; 8, first slide bar; 9, first screw sleeve; 10, second screw sleeve; 11, second slide bar; 12, support plate; 13, limit groove; 14, heat dissipation groove; 15, positioning frame; 16, mounting hole; 17, limit block. DETAILED DESCRIPTION

[0030] See also Figure 1-Figure 8 In the embodiment of the present invention, a U-shaped photoelectric sensor includes a sensor body 4 and a mounting plate 1, an adjustment mechanism 2 is provided on the front of the mounting plate 1, an assembly seat 3 is fixedly installed on the front of the adjustment mechanism 2, a limiting groove 13 is provided on the right side of the assembly seat 3, the assembly seat 3 is plugged with the sensor body 4 through the limiting groove 13, a fixing mechanism 5 is provided on the inner side of the assembly seat 3, the assembly seat 3 is clamped with the sensor body 4 through the fixing mechanism 5, and a heat dissipation mechanism 6 is symmetrically provided on the outer side of the sensor body 4; the sensor body 4 also includes internal infrared emitting lamps, infrared receiving lamps, circuit boards and other structural elements, which are prior art products known on the market, so no further details are given here;

[0031] The adjusting mechanism 2 comprises a first housing 201, which is fixedly mounted on the front side of the mounting plate 1, a first screw rod 203 is rotatably connected to the inner side of the first housing 201, one end of the first screw rod 203 penetrates through the housing wall of the first housing 201 and is fixedly mounted with a first rotating block 202, a second housing 204 is threadedly connected to the outer side of the first screw rod 203, the second housing 204 is slidably connected to the inner side of the first housing 201, a bottom housing 208 is fixedly mounted on the lower end of the second housing 204, and a second screw rod 203 is rotatably connected to the inner side of the second housing 204. 5. The lower end of the second screw rod 205 extends into the inner side of the bottom shell 208 and is fixedly installed with the first bevel gear 2010. The inner side of the bottom shell 208 is rotatably connected with a rotating rod 209. One end of the rotating rod 209 is fixedly installed with the second bevel gear 2011. The first bevel gear 2010 and the second bevel gear 2011 are meshingly connected. The end of the rotating rod 209 away from the second bevel gear 2011 penetrates the shell wall of the bottom shell 208 and is fixedly installed with a second rotating block 207. The outer side of the second screw rod 205 is threadedly connected with a mounting block 206. The mounting block 206 is slidably connected to the second set. The assembly seat 3 is fixedly installed on the inner side of the shell 204 by screws and the mounting block 206. When the sensor body 4 is installed on the assembly seat 3, when the sensor body 4 needs to be adjusted according to the position of the object to be measured, the first rotary block 202 is rotated so that the first rotary block 202 drives the first screw rod 203 to rotate inside the first shell 201, and at the same time, the second shell 204 threadedly connected to the outer side of the first screw rod 203 can slide, so that the left and right directions of the sensor body 4 can be adjusted conveniently. By rotating the second rotary block 207, the second rotary block 207 The connected rotating rod 209 rotates on the bottom shell 208, and at the same time, the rotating rod 209 drives the second bevel gear 2011 to mesh with the first bevel gear 2010, and the second screw rod 205 connected to the first bevel gear 2010 rotates in the second sleeve shell 204, so that the mounting block 206 threadedly connected to the outer side of the second screw rod 205 slides, which can facilitate the adjustment of the upper and lower positions of the sensor body 4. Therefore, through the adjustment function of the sensor body 4, it can greatly meet the installation and actual use process for adjusting and using a variety of different detection objects;

[0032] The fixing mechanism 5 includes a mounting groove 501, which is symmetrically arranged on a side of the assembly seat 3 away from the limiting groove 13. A guide rod 502 is symmetrically fixedly installed on the inner side of the mounting groove 501. The outer side of the guide rod 502 is slidably connected with the same U-shaped plate 504. A spring 503 is sleeved on the outer side of the guide rod 502. A clamping block 505 is fixedly installed on the side of the U-shaped plate 504 away from the spring 503. The clamping end of the clamping block 505 is movable and deeply inserted into the inner side of the limiting groove 13. The clamping end of the clamping block 505 is clamped with the back side of the sensor body 4. When installing the sensor body 4, it is only necessary to insert the sensor body 4 along the limiting groove 13 on one side of the assembly seat 3. When inserting, the sensor body 4 squeezes the clamping block 505 extending out of the limiting groove 13, and the same U-shaped plate 504 connected to the clamping block 505 can slide on the guide rod 502 on the inner side of the mounting groove 501. The spring 503 is squeezed until the sensor body 4 is inserted into the assembly seat 3 and the positions of the card slot 7 on the sensor body 4 and the card-in end of the card block 505 correspond to each other, the spring 503 elastically resets and pushes the card block 505 connected to the U-shaped plate 504, so that the card-in end of the card block 505 is carded into the card slot 7 on the back of the sensor body 4 to fix it. When disassembling and maintaining the sensor body 4, there is no need to use any auxiliary tools. It is only necessary to push the U-shaped plate 504 to move in the installation groove 501 to separate the card block 505 on the U-shaped plate 504 and the card slot 7 on the sensor body 4, and then the sensor body 4 is moved out along the direction of the notch of the limit groove 13, thereby greatly facilitating the disassembly and assembly of the sensor body 4; four guide rods 502 are respectively provided on the inner side of each installation groove 501, which can ensure the stability of the use of the U-shaped plate 504;

[0033] The heat dissipation mechanism 6 includes a positioning groove 601 and a heat sink 603. The positioning groove 601 is symmetrically arranged on the outside of the sensor body 4. A through hole 602 is arranged on the inside of the positioning groove 601. The through hole 602 and the inside of the sensor body 4 are connected to each other. The heat sink 603 is fixedly installed on the inside of the positioning groove 601 by screws. A heat sink 604 is fixedly connected to one side of the heat sink 603. A heat pipe 605 is fixedly installed on the other side of the heat sink 603 away from the heat sink 604. The heat pipe 605 of the heat sink 603 extends into the inside of the through hole 602. When the circuit board and electronic components inside the sensor body 4 emit heat during use, the heat is absorbed by the heat pipe 605 on the heat sink 603. At the same time, the heat is quickly dissipated through the heat sink 604 on the other side of the heat sink 603. Therefore, the component failure caused by internal heat collection of the sensor body 4 due to long-term operation can be greatly reduced. The heat pipe 605 is a prior art product, and its principle is the same as that of the heat pipe 605 used on the processor, so that an efficient heat absorption effect can be achieved.

[0034] See also Figure 2A first screw sleeve 9 is fixedly installed on the inner side of the second shell 204, and the second shell 204 is threadedly connected to the outer side of the first screw rod 203 through the first screw sleeve 9. A first slide bar 8 is symmetrically fixedly installed on the inner side of the first shell 201, and the second shell 204 is slidably connected to the outer side of the first slide bar 8. By threading the second shell 204 with the first screw sleeve 9 and the first screw rod 203, the second shell 204 can slide on the first slide bar 8 on the inner side of the first shell 201.

[0035] See also Figure 3 A second screw sleeve 10 is fixedly installed on the inner side of the mounting block 206, and the mounting block 206 is threadedly connected to the outer side of the second screw rod 205 through the second screw sleeve 10. A second slide bar 11 is symmetrically fixedly installed on the inner side of the second shell 204, and the mounting block 206 is slidably connected to the outer side of the second slide bar 11. The mounting block 206 with the second screw sleeve 10 is threadedly connected to the second screw rod 205 in the second shell 204, so that the mounting block 206 can slide on the inner side of the second shell 204.

[0036] See also Figure 4 A support plate 12 is fixedly installed on the inner side of the bottom shell 208, one end of the rotating rod 209 is rotatably connected to the inner side of the support plate 12, one end of the rotating rod 209 passes through the support plate 12 and is fixedly installed on the second bevel gear 2011, and the other end of the rotating rod 209 can be conveniently rotated on the inner side of the bottom shell 208 by using the support plate 12 on the inner side of the bottom shell 208.

[0037] See also Figure 2 and Figure 5 The back of the sensor body 4 is fixedly connected to the limiting block 17, and the sensor body 4 is plugged into the limiting groove 13 through the limiting block 17. The back of the sensor body 4 is symmetrically provided with a card slot 7, and the card-in end of the card block 505 is card-engaged with the card slot 7. The limiting block 17 on the back of the sensor body 4 can facilitate the limited plug-in between the back of the sensor body 4 and the limiting groove 13 on the assembly seat 3, and the card slot 7 on the back of the sensor body 4 can be conveniently card-engaged and fixed with the card-in end of the card block 505 in the limiting groove 13.

[0038] See also Figure 7 and Figure 8A heat dissipation groove 14 is provided on the outer side of the magnetic sheet of the heat dissipation fin 604, and the groove shape of the heat dissipation groove 14 is U-shaped. A positioning frame 15 is fixedly installed on the side of the heat dissipation seat 603 close to the heat pipe 605. The heat dissipation seat 603 is plugged into one end of the hole 602 through the positioning frame 15. The inner side of the heat dissipation seat 603 is symmetrically provided with mounting holes 16. The heat dissipation seat 603 is fixedly installed by screws penetrating the mounting holes 16 and the positioning groove 601. By utilizing the heat dissipation groove 14 on the heat dissipation fin 604, the heat dissipation area of ​​the heat dissipation fin 604 can be expanded and its heat dissipation effect can be improved. When installing the heat dissipation seat 603, it only needs to be inserted into the through hole 602 through the positioning frame 15, and then the mounting hole 16 of the heat dissipation seat 603 is screwed through to fix it in the positioning groove 601.

[0039] The working principle of the present invention is as follows: during use, when the sensor body 4 is mounted on the assembly seat 3, when the sensor body 4 needs to be adjusted according to the position of the object to be measured, the first rotary block 202 is rotated so that the first rotary block 202 drives the first screw rod 203 to rotate inside the first housing 201, and at the same time, the second housing 204 threadedly connected to the outer side of the first screw rod 203 can slide, so that the sensor body 4 can be conveniently adjusted to the left and right positions, and the second rotary block 207 is rotated so that the rotating rod 209 connected to the second rotary block 207 rotates on the bottom housing 208, and at the same time, the rotating rod 209 drives the second bevel gear 2011 to mesh with the first bevel gear 2010, and the second screw rod 205 connected to the first bevel gear 2010 rotates in the second housing 204, so that the mounting block 206 threadedly connected to the outer side of the second screw rod 205 slides, so that the sensor body 4 can be conveniently adjusted to the upper and lower positions;

[0040] When installing the sensor body 4, it is only necessary to insert the sensor body 4 along the limiting groove 13 on one side of the assembly seat 3. During the insertion, the sensor body 4 squeezes the block 505 extending out of the limiting groove 13, and the same U-shaped plate 504 connected to the block 505 can slide on the guide rod 502 on the inner side of the mounting groove 501 and squeeze the spring 503, until the sensor body 4 is inserted into the assembly seat 3, and the positions of the slot 7 on the sensor body 4 and the snap-in end of the block 505 correspond, the spring 503 elastically resets and pushes the block 505 connected to the U-shaped plate 504, so that the snap-in end of the block 505 is snapped into the slot 7 on the back side of the sensor body 4 to fix it. When disassembling and maintaining the sensor body 4, there is no need to use any auxiliary tools. It is only necessary to push the U-shaped plate 504 to move at the mounting groove 501, so that the block 505 on the U-shaped plate 504 and the slot 7 on the sensor body 4 can be separated, and then the sensor body 4 can be moved out along the direction of the notch of the limiting groove 13;

[0041] When the sensor body 4 is in use, the circuit board and electronic components inside the sensor body 4 emit heat, which is absorbed by the heat pipe 605 on the heat sink 603 , and the heat is quickly dissipated through the heat sink fins 604 on the other side of the heat sink 603 .

Claims

1. A U-shaped photoelectric sensor, characterized in that: It comprises a sensor body and a mounting plate, wherein an adjustment mechanism is provided on the front of the mounting plate, an assembly seat is fixedly installed on the front of the adjustment mechanism, a limiting groove is provided on the right side of the assembly seat, the assembly seat is plugged into the sensor body through the limiting groove, a fixing mechanism is provided on the inner side of the assembly seat, the assembly seat is clamped into the sensor body through the fixing mechanism, and a heat dissipation mechanism is symmetrically provided on the outer side of the sensor body; The adjusting mechanism comprises a first sleeve, wherein the first sleeve is fixedly mounted on the front side of the mounting plate, the first sleeve is rotatably connected to the inner side of the first sleeve, one end of the first screw penetrates the shell wall of the first sleeve and is fixedly mounted on the first rotating block, the outer side of the first screw is threadedly connected to the second sleeve, the second sleeve is slidably connected to the inner side of the first sleeve, the lower end of the second sleeve is fixedly mounted on the inner side of the second sleeve, the lower end of the second screw extends into the inner side of the first sleeve and is rotatably connected to the first bevel gear, the inner side of the bottom shell is rotatably connected to the rotating rod, one end of the rotating rod is fixedly mounted on the second bevel gear, the first bevel gear and the second bevel gear are meshingly connected, the end of the rotating rod away from the second bevel gear penetrates the shell wall of the bottom shell and is fixedly mounted on the second rotating block, the outer side of the second screw is threadedly connected to the mounting block, the mounting block is slidably connected to the inner side of the second sleeve, and the assembly seat is fixedly mounted by screws and the mounting block. The fixing mechanism includes an installation groove, which is symmetrically arranged on a side of the assembly seat away from the limiting groove, a guide rod is symmetrically fixedly installed on the inner side of the installation groove, the outer side of the guide rod is slidably connected with the same U-shaped plate, a spring is sleeved on the outer side of the guide rod, a clamping block is fixedly installed on the side of the U-shaped plate away from the spring, the clamping end of the clamping block moves deeply into the inner side of the limiting groove, and the clamping end of the clamping block is clamped with the back side of the sensor body.

2. A U-shaped photoelectric sensor according to claim 1, characterized in that: A first screw sleeve is fixedly mounted on the inner side of the second casing, and the second casing is threadedly connected to the outer side of the first screw rod through the first screw sleeve.

3. A U-shaped photoelectric sensor according to claim 1, characterized in that: A first sliding rod is symmetrically fixedly mounted on the inner side of the first housing, and the second housing is slidably connected to the outer side of the first sliding rod.

4. A U-shaped photoelectric sensor according to claim 1, characterized in that: A second screw sleeve is fixedly mounted on the inner side of the mounting block, and the mounting block is threadedly connected to the outer side of the second screw rod through the second screw sleeve.

5. A U-shaped photoelectric sensor according to claim 1, characterized in that: A second sliding rod is symmetrically fixedly mounted on the inner side of the second housing, and the mounting block is slidably connected to the outer side of the second sliding rod.

6. A U-shaped photoelectric sensor according to claim 1, characterized in that: A support plate is fixedly installed on the inner side of the bottom shell, one end of the rotating rod is rotatably connected to the inner side of the support plate, and one end of the rotating rod passes through the support plate and is fixedly installed on the second bevel gear.

7. A U-shaped photoelectric sensor according to claim 1, characterized in that: The back of the sensor body is fixedly connected to a limiting block, the sensor body is plugged in through the limiting block and the limiting groove, and the back of the sensor body is symmetrically provided with card slots, and the card-in end of the card block is card-engaged with the card slot.

8. A U-shaped photoelectric sensor according to claim 1, characterized in that: The heat dissipation mechanism includes a positioning groove and a heat dissipation seat, the positioning groove is symmetrically arranged on the outside of the sensor body, a through hole is arranged on the inside of the positioning groove, the through hole and the interior of the sensor body are connected to each other, the heat dissipation seat is fixedly installed on the inside of the positioning groove by screws, a heat dissipation fin is fixedly connected to one side of the heat dissipation seat, a heat pipe is fixedly installed on the other side of the heat dissipation seat away from the heat dissipation fin, and the heat pipe part of the heat dissipation seat extends into the inside of the through hole.

9. A U-shaped photoelectric sensor according to claim 8, characterized in that: A heat dissipation groove is provided on the outer side of the magnetic sheet of the heat dissipation fin, and the groove shape of the heat dissipation groove is U-shaped. A positioning frame is fixedly installed on the side of the heat dissipation seat close to the heat pipe. The heat dissipation seat is plugged into the positioning frame and one end of the through hole. The inner side of the heat dissipation seat is symmetrically provided with mounting holes, and the heat dissipation seat is fixedly installed by screws penetrating the mounting holes and the positioning grooves.

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