Novel anti-pinch device for conveyor belt

Abstract

The utility model discloses a novel anti-pinch device for a conveyor belt, which relates to the technical field of conveying devices and comprises a first anti-pinch detection component and a second anti-pinch detection component which are mounted on supports on two sides, and the first anti-pinch detection component comprises a rotating shaft, a baffle, a rhombic block and a first travel switch. The second anti-pinch detection assembly is provided with a fixing seat, a guide rod, a connecting block, a reset spring, a pressing plate and a second travel switch, when the hand gets close to a dangerous area below the conveying belt and extrudes the pressing plate, the conveying belt is driven to rotate, and the conveying belt is stopped. The device effectively solves the problems of high cost and low response speed of an existing hand pinching prevention device, has the advantages of being low in cost, rapid in response, good in protection effect and the like, and can practically guarantee the safety of operators and improve the production safety.

Description

TECHNICAL FIELD

[0001] The utility model belongs to conveying device technical field, especially, relate to a new type of conveyer belt anti -hand -pinching device. BACKGROUND

[0002] In industrial production, logistics transportation and many other fields, the conveyor belt as a kind of efficient material conveying equipment is widely used, from the product assembly line of factory, to the goods sorting system of logistics warehouse, the stable operation of conveyor belt plays a crucial role to production and transportation efficiency, with the continuous improvement of production automation, the use scene of conveyor belt is increasing, and the safety problem accompanying it is highlighted, and hand clamping accident becomes an important hidden danger threatening the personal safety of operating personnel.

[0003] The existing conveyor belt anti-hand-pinch device mainly has two types based on sensor and control system and mechanical protection device, the device based on sensor and control system can monitor danger and control the conveyor belt to stop, but high-precision sensor and complex control system lead to high cost, and signal transmission, processing and execution response time-consuming, reaction speed is slow, mechanical protection device such as protective cover and protective fence can block hands from entering dangerous area, but its installation and debugging are complex, and there can be blind area of protection, it is difficult to completely eliminate hand clamping accident. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a new type of conveyer belt anti-hand-pinch device, by setting first anti-pinch detection assembly and second anti-pinch detection assembly, the problem of high cost and slow reaction speed of existing anti-hand-pinch device is solved.

[0005] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0006] The utility model is a new type of conveyer belt anti-hand-pinch device, including conveyer belt and both side supports, first anti-pinch detection assembly and second anti-pinch detection assembly are installed in sequence up and down between both side supports;

[0007] The first anti-pinch detection assembly includes the pivot penetrating both side supports, the pivot is rotatably connected with the side support, the pivot is fixedly installed with the baffle on the circumferential surface, the both ends of the pivot are fixedly installed with the rhombic block, the outer side of the side support is fixedly installed with the first travel switch, and the operating head of the first travel switch is slidably connected with the rhombic block.

[0008] The utility model is further provided with a lifting ring column fixedly installed on one side of one rhombic block on the outer side of one side support, and a tension spring is installed between the lifting ring column and the rhombic block.

[0009] The utility model further sets up, another side support outer side fixed mounting has the positioning pin, another side rhombus piece one side is provided with the clamping groove, the clamping groove is connected with the positioning pin and is matched.

[0010] The utility model further sets up, the second anti-pinch detection component includes two fixed seats of installing in the side support inner side, two fixed seats symmetry sets up.

[0011] The utility model further sets up, two fixed seats fixed mounting have the guide rod between, the guide rod circumferential surface is penetrated and has the link block of sliding cooperation, the guide rod circumferential surface is equipped with the reset spring under link block.

[0012] The utility model further sets up, two link blocks one side common fixed mounting has the pressing plate, two side support inner side all are installed with the second travel switch under the pressing plate.

[0013] The utility model has the following beneficial effects:

[0014] 1, the utility model discloses a simple and low -cost mechanical component is built anti-pinch hand device by abandoning complex expensive sensor and control system, greatly reduces the overall cost of equipment, while guaranteeing the anti-pinch hand function, saves a large amount of procurement and maintenance funds.

[0015] 2, the utility model discloses when the hand touches the baffle or the object extrusion pressing plate, can rapidly cause the linkage of mechanical structure, directly triggers the first travel switch or the second travel switch, and makes it transmit the signal to the control system of conveyer belt, makes conveyer belt stop running, the whole process does not need complex signal processing, mechanical action is direct and rapid, greatly shortens the time from dangerous detection to conveyer belt stop, effectively reduces the probability of the hand accident.

[0016] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above. DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0018] Figure 1 It is a kind of new conveyer belt anti-pinch hand device first visual angle structure schematic diagram;

[0019] Figure 2 It is Figure 1 Enlarged schematic view of A place in;

[0020] Figure 3 This is a partial structural diagram of a novel anti-pinch device for conveyor belts from a second perspective.

[0021] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0022] Figure 5 This is a schematic diagram of the structure of the second anti-pinch detection component.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Conveyor belt; 2. Side support; 3. First anti-pinch detection component; 4. Second anti-pinch detection component; 5. Rotary shaft; 6. Baffle; 7. Diamond block; 8. First limit switch; 9. Lifting ring column; 10. Tension spring; 11. Positioning pin; 12. Slot; 13. Guide rod; 14. Connecting block; 15. Return spring; 16. Pressure plate; 17. Second limit switch; 18. Fixed base. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation

[0027] Please see Figures 1-5 This utility model is a novel anti-pinch device for conveyor belts, including a conveyor belt 1 and two side supports 2. A first anti-pinch detection component 3 and a second anti-pinch detection component 4 are installed vertically between the two side supports 2. The first anti-pinch detection component 3 and the second anti-pinch detection component 4 are respectively used to prevent the operator's hand or other object from entering the gap between the conveyor belt 1 and other components from above and being pinched, and to prevent the operator's hand or other object from entering the gap between the conveyor belt 1 and other components from below and being pinched.

[0028] Specifically, the first anti-pinch detection component 3 includes a rotating shaft 5 that passes through both side supports 2. The rotating shaft 5 is rotatably engaged with the side supports 2. A baffle 6 is fixedly installed on the circumference of the rotating shaft 5. A diamond-shaped block 7 is fixedly installed at both ends of the rotating shaft 5. A first limit switch 8 is fixedly installed on the outer side of the side supports 2. The operating head of the first limit switch 8 (the operating head consists of a roller and a push rod) is slidably engaged with the diamond-shaped block 7. When the operator's hand approaches the conveyor belt and touches the baffle 6 of the first anti-pinch detection component 3, the baffle 6 drives the rotating shaft 5 to rotate, and the diamond-shaped blocks 7 at both ends of the rotating shaft 5 rotate accordingly. When the diamond-shaped blocks 7 rotate, they apply pressure to the roller. An oblique thrust is applied, which is transmitted to the push rod via the roller, causing the push rod to retract into the first limit switch 8. Since the normally closed contact of the limit switch is connected in series in the main circuit that controls the operation of the track motor, or its normally open contact is connected to the signal input terminal of the control circuit, the retraction of the push rod will drive the contact to move, causing the normally closed contact to open or the normally open contact to close. This change in the contact state will change the circuit state, and the signal will be transmitted to the control system. After receiving the signal, the control system will issue a command to stop the track, thereby preventing the operator's limbs from being pinched and realizing the anti-pinch function.

[0029] A lifting ring column 9 located on one side of a rhombus block 7 is fixedly installed on the outer side of one side bracket 2. A tension spring 10 is installed between the lifting ring column 9 and the rhombus block 7. When the first anti-pinch detection component 3 is triggered, the rotating shaft 5 drives the rhombus block 7 to rotate, which increases the distance between the two connection points of the tension spring 10, and the tension spring 10 stretches accordingly. When the operator moves his hand away from the conveyor belt 1, the tension spring 10 elastically recovers, causing the rhombus block 7 to rotate in the opposite direction. The reset mechanism in the first limit switch 8 drives the operating head to return to its original position, ensuring that the conveyor device resumes normal operation.

[0030] A positioning pin 11 is fixedly installed on the outer side of the other bracket 2. A slot 12 is opened on one side of the other rhombus block 7. The slot 12 is engaged with the positioning pin 11. When the first anti-pinch detection component 3 is triggered, the rotating shaft 5 drives the other rhombus block 7 to rotate, so that the slot 12 on the other rhombus block 7 gradually approaches the positioning pin 11. When the positioning pin 11 is fully engaged in the slot 12, the rhombus block 7 can no longer rotate in the same direction. The rotating shaft 5 and the baffle 6 also cannot rotate, thereby preventing the rhombus block 7 from rotating excessively and causing the operating head of the first limit switch 8 to disengage from the contour surface of the rhombus block 7, so that the first limit switch 8 issues a recovery command.

[0031] Furthermore, the second anti-pinch detection component 4 includes two fixed seats 18 installed on the inner side of the side bracket 2. The two fixed seats 18 are symmetrically arranged, and a guide rod 13 is fixedly installed between the two fixed seats 18. A connecting block 14 is slidably fitted through the side of the guide rod 13. A reset spring 15 located below the connecting block 14 is sleeved on the side of the guide rod 13. A pressure plate 16 is fixedly installed on one side of both connecting blocks 14. A second limit switch 17 located below the pressure plate 16 is installed on the inner side of both side brackets 2. When the operator's hand is about to get stuck in the conveyor belt 1... When the bottom frame is lowered, it will pass through the gap between the conveyor belt 1 and the pressure plate 16. Since the gap is smaller than the thickness of a palm, the pressure plate 16 moves down, causing the connecting block 14 to slide down along the guide rod 13, compressing the reset spring 15. At the same time, the pressure plate 16 presses down on the operating head of the second limit switch 17, causing the second limit switch 17 to transmit a signal to the control system of the conveyor belt 1, causing the conveyor belt 1 to stop running. After the operator removes his hand, the reset spring 15 pushes the connecting block 14 and the pressure plate 16 to reset, and the conveyor device can resume normal operation.

[0032] The operation process of this embodiment is as follows: When the conveyor belt is running normally, if the operator touches the baffle 6 and causes it to rotate, the baffle 6 will drive the rotating shaft 5 to rotate, and the diamond blocks 7 at both ends of the rotating shaft 5 will rotate accordingly. When the diamond blocks 7 rotate, they will push the operating head of the first limit switch 8 to change the contact state of the first limit switch 8 (normally closed contact opens or normally open contact closes). The signal is transmitted to the control system, and the control system issues a command to stop the conveyor belt to avoid injury to the limbs. When the operator moves his hand away from the conveyor belt, the tension spring 10 returns to its elasticity, causing the diamond blocks 7 to rotate in the opposite direction. The operating head of the first limit switch 8 returns to its original position, and the conveyor belt resumes normal operation.

[0033] If an operator's hand is about to get caught in the base frame below the conveyor belt 1, and the hand passes through the gap between the conveyor belt 1 and the pressure plate 16, because the gap is smaller than the thickness of the palm, the pressure plate 16 will move downward, causing the connecting block 14 to slide down along the guide rod 13, compressing the reset spring 15. At the same time, the pressure plate 16 presses the operating head of the second limit switch 17, and the second limit switch 17 transmits a signal to the control system, causing the conveyor belt to stop running. After the operator removes their hand, the reset spring 15 pushes the connecting block 14 and the pressure plate 16 to reset, and the conveyor belt resumes normal operation.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A novel anti-pinch device for conveyor belts, comprising a conveyor belt (1) and two side supports (2), characterized in that: A first anti-pinch detection component (3) and a second anti-pinch detection component (4) are installed sequentially between the two side supports (2); The first anti-pinch detection component (3) includes a rotating shaft (5) that passes through both side brackets (2). The rotating shaft (5) is rotatably engaged with the side bracket (2). A baffle (6) is fixedly installed on the circumferential side of the rotating shaft (5). A rhombus block (7) is fixedly installed at both ends of the rotating shaft (5). A first limit switch (8) is fixedly installed on the outer side of the side bracket (2). The operating head of the first limit switch (8) is slidably engaged with the rhombus block (7).

2. The novel anti-pinch device for conveyor belts according to claim 1, characterized in that, A lifting ring column (9) located on one side of a rhombus block (7) is fixedly installed on the outer side of the side bracket (2), and a tension spring (10) is installed between the lifting ring column (9) and the rhombus block (7).

3. A novel anti-pinch device for conveyor belts according to claim 2, characterized in that, Another side bracket (2) has a positioning pin (11) fixedly installed on its outer side, and another rhomboid block (7) has a slot (12) on one side, which engages with the positioning pin (11).

4. A novel anti-pinch device for conveyor belts according to claim 3, characterized in that, The second anti-pinch detection component (4) includes two fixed seats (18) installed on the inner side of the side bracket (2), and the two fixed seats (18) are arranged symmetrically.

5. A novel anti-pinch device for conveyor belts according to claim 4, characterized in that, A guide rod (13) is fixedly installed between the two fixed seats (18). A connecting block (14) is slidably fitted through the periphery of the guide rod (13). A reset spring (15) located below the connecting block (14) is sleeved on the periphery of the guide rod (13).

6. A novel anti-pinch device for conveyor belts according to claim 5, characterized in that, A pressure plate (16) is fixedly installed on one side of both connecting blocks (14), and a second limit switch (17) located below the pressure plate (16) is installed on the inner side of both side brackets (2).

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