Safety bolt of equipment protective door

Abstract

The utility model relates to the technical field of steel cord production, in particular to a safety bolt of an equipment protective door, which comprises a sleeve, a bolt and a position sensor, the detection distance of the position sensor is set as H. When the distance between the end part of the bolt and the detection end of the position sensor is defined to be smaller than H, the bolt is inserted in place. The position sensor is arranged to be electrically connected with a starting circuit in the equipment body, and when the position sensor detects that the plug pin is inserted in the sleeve in place, the starting circuit is closed, and by arranging the combination of the plug pin and the sleeve on the equipment body corresponding to the front side of the protective door, when the plug pin is inserted into the sleeve, the safety of the protective door is ensured. Meanwhile, the position sensor for detecting whether the bolt is located at the preset position or not is arranged below the sleeve, the position sensor is in linkage with the starting circuit, the double guarantee effect on whether the protective door is opened or not is achieved, and the safety coefficient can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel cord production, and particularly relates to a safety bolt for an equipment protection door. Background Art

[0002] The steel cord twisting machine is a key equipment in the production process of steel cords. It braids and twists multiple strands of steel wires through specific processes to finally form steel cord products with characteristics such as high strength, wear resistance, and corrosion resistance. In the production of steel cords, equipment and operation safety are regarded as the top priorities. To solve the perceived unsafe factors, most equipment has a design that the equipment cannot be started when the safety door is not locked, which is reflected in the equipment program, and the door lock is linked with the equipment starting device.

[0003] However, when the equipment stops, it generally takes a certain amount of time for the brakes to completely stop. There is a greater risk of opening the safety door during this period. And sometimes the equipment breaks down. Equipment breakdowns are inevitable. Relying solely on the measures in the equipment software program often cannot completely avoid the situation where the equipment cannot be started when the door is not locked. Therefore, the combination of mechanical and software methods can further improve the safety factor. Content of the Utility Model

[0004] The utility model provides a safety bolt for an equipment protection door, including:

[0005] A sleeve, fixedly arranged on the equipment body and located on the side of the protection door;

[0006] A bolt, which is set to block the opening of the protection door when inserted into the sleeve;

[0007] A position sensor, arranged on the equipment body and used to detect whether the bolt is inserted in place;

[0008] Wherein, the detection distance of the position sensor is set to H. It is defined that when the distance between the end of the bolt and the detection end of the position sensor is less than H, it is inserted in place. The position sensor is electrically connected to the starting circuit in the equipment body, and when the position sensor detects that the bolt is inserted in place in the sleeve, the starting circuit is closed.

[0009] Preferably, the bolt is set in a "T" - shaped structure. The bolt includes a first bolt rod and a second bolt rod that are perpendicular to each other. The first bolt rod is welded and fixed at the middle position of the second bolt rod. The first bolt rod is inserted into the sleeve, and when the outer wall of the second bolt rod contacts the upper end surface of the sleeve, the distance between the bottom of the first bolt rod and the detection end of the position sensor is less than H.

[0010] Preferably, when the outer wall of the second plug rod contacts the upper end surface of the sleeve, the end of the second plug rod is located on the front side of the protective door and is used to prevent the protective door from opening.

[0011] Preferably, a buckle ring is fixedly arranged on the side of the outer wall of the second plug rod away from the first plug rod, a positioning ring is fixedly arranged on the equipment body, and a connecting piece is installed between the positioning ring and the buckle ring.

[0012] Preferably, the connecting piece includes a steel wire rope or an iron chain.

[0013] Preferably, two protective doors are hingedly installed on the equipment body, and the length of the second plug rod is greater than the distance between the two protective doors.

[0014] Preferably, the position sensor, the first plug rod, and the sleeve are arranged coaxially.

[0015] Preferably, the bolt includes a stainless steel bolt body, the sleeve includes a stainless steel cylinder body, and the inner diameter of the sleeve is equal to the outer diameter of the bolt.

[0016] Compared with the prior art, the advantages of the present utility model are as follows:

[0017] By arranging a combination of a bolt and a sleeve on the equipment body corresponding to the front side of the protective door, when the bolt is inserted into the inner side of the sleeve, the protective door can be mechanically blocked from opening. At the same time, a position sensor for detecting whether the bolt is in a preset position is arranged below the sleeve, and the position sensor is linked with the starting circuit, playing a role of double guarantee for whether the protective door opens, and further improving the safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in each figure may be represented by the same reference numeral. For clarity, not every component is labeled in each figure. Now, embodiments of various aspects of the present utility model will be described by way of example and with reference to the drawings, wherein:

[0019] Figure 1 is a schematic installation structure diagram of a safety bolt for a protective door of the equipment shown in an embodiment of the present utility model;

[0020] Figure 2 is Figure 1 the right side view structure diagram of

[0021] Figure 3 is Figure 1 the enlarged structure diagram at A in

[0022] Figure 4 a schematic diagram of the position sensor shown in an embodiment of the present utility model being connected to the starting circuit;

[0023] 100, Equipment body; 200, Protective door; 10, Position sensor; 101, Sensor bracket; 20, Bolt; 21, First insertion rod; 22, Second insertion rod; 23, Buckle; 30, Sleeve; 40, Positioning ring; 50, Connecting piece. Detailed implementation mode

[0024] In order to better understand the technical content of the present utility model, specific embodiments are hereby given and described in conjunction with the accompanying drawings as follows.

[0025] Although the door lock of the existing equipment protective door is interlocked with the starting device, the probability of equipment failure cannot be zero, and the failure of the interlocking device is inevitable. Therefore, the equipment door lacks mechanical interlocking. The present utility model provides a safety bolt for an equipment protective door, aiming to further improve the safety factor through the combination of mechanical and software methods. This device mainly includes a sleeve 30, a bolt 20 and a position sensor 10.

[0026] As Figure 1 and Figure 2 shown, two protective doors 200 are hinged to the upper end of the equipment body 100. The sleeve 30 is fixedly arranged on the equipment body 100 and is located on the side of the protective door 200 (i.e., in the middle of the two protective doors 200). The bolt 20 is arranged such that when inserted into the sleeve 30, it can prevent the protective door 200 from opening. The position sensor 10 is arranged on the equipment body 100, fixed by the sensor bracket 101, and is used to detect whether the bolt 20 is inserted in place.

[0027] Among them, the position sensor 10 adopts an electromagnetic or photoelectric proximity sensor, which is a switch that can emit an "action" signal when an object approaches it to a set distance. The detection distance of the position sensor 10 is set to H. It is defined that when the distance between the end of the bolt 20 and the detection end of the position sensor 10 is less than H, it is inserted in place. As Figure 4 shown, the position sensor 10 is arranged to be electrically connected to the starting circuit in the equipment body 100. And when the position sensor 10 detects that the bolt 20 is inserted in place in the sleeve 30, the starting circuit is closed and the starting circuit can work normally. When the bolt 20 is not inserted in place, the position sensor 10 cannot detect the position of the bolt 20, and at this time the starting circuit cannot work normally.

[0028] In this way, when the bolt 20 is not in the set position, the equipment cannot be started normally. After the bolt 20 is in the set position, the protective door 200 is blocked by the bolt 20 and cannot be opened, and the equipment can be started normally. Through the combination of mechanical and software methods, it is ensured that when the protective door 200 is closed and cannot be opened, the equipment can be started normally, further improving the safety factor.

[0029] As Figure 3As shown, the latch 20 is set to a "T"-shaped structure. The latch 20 includes a first plug rod 21 and a second plug rod 22 that are perpendicular to each other. The first plug rod 21 is welded and fixed at the middle position of the second plug rod 22. The first plug rod 21 is inserted in the sleeve 30, and when the outer wall of the second plug rod 22 contacts the upper end surface of the sleeve 30, the distance between the bottom of the first plug rod 21 and the detection end of the position sensor 10 is less than H, and at this time, the end of the second plug rod 22 is located at the front side of the protective door 200 and is used to prevent the protective door 200 from opening. In this way, when the latch 20 is inserted into the sleeve 30, the second plug rod 22 can prevent the protective doors 200 on both sides from opening in terms of mechanical structure, and play a mechanical blocking role. At the same time, the position sensor 10 can detect that the position of the first plug rod 21 is in the preset position, so that the starting circuit is turned on and can work normally, and it is linked with the control circuit to achieve a double protection effect, which can further improve the safety factor.

[0030] Furthermore, a buckle ring 23 is fixedly provided on a side of the outer wall of the second plug rod 22 away from the first plug rod 21 , a positioning ring 40 is fixedly provided on the device body 100 , and a connecting member 50 is installed between the positioning ring 40 and the buckle ring 23 .

[0031] Optionally, the connecting member 50 is made of a steel wire rope or an iron chain, so that the latch 20 is fastened to the equipment body 100 by the steel wire rope or the iron chain to prevent loss. When the equipment is shut down, the protective door 200 can only be opened after the latch 20 is pulled out from the sleeve 30. Therefore, compared with the traditional protective door 200 structure, there is an additional process of removing the latch 20. In this way, the opening time of the protective door 200 can be delayed. During this process, the equipment is stopped by braking, further reducing the risk of being damaged by the equipment.

[0032] Preferably, the length of the second plug rod 22 is greater than the distance between the two protective doors 200. In this way, after the latch 20 is inserted into the sleeve 30, the two protective doors 200 can be blocked from opening, and the "T"-shaped latch 20 will not rotate at a large angle, and can always maintain the blocking effect on the protective doors 200.

[0033] Furthermore, the position sensor 10, the first plug rod 21, and the sleeve 30 are arranged to be coaxially distributed and parallel to the side of the protective door 200, so that the insertion and removal of the latch 20 are convenient, and the latch 20 can block two protective doors 200 at the same time.

[0034] In a preferred embodiment, the latch 20 and the sleeve 30 are both made of stainless steel, and the inner diameter of the sleeve 30 is equal to the outer diameter of the latch 20, which improves the durability of the latch 20 and the sleeve 30. The material has a high hardness, which can reduce the wear between the latch 20 and the sleeve 30.

[0035] Combined with the above embodiments, by arranging a combination of a bolt 20 and a sleeve 30 on the front side of the protective door 200 corresponding to the device body 100, when the bolt 20 is inserted into the inner side of the sleeve 30, the opening of the protective door 200 can be blocked mechanically. At the same time, a position sensor 10 for detecting whether the bolt 20 is in a preset position is arranged below the sleeve 30, and the position sensor 10 is linked with the starting circuit, achieving the effect of double guarantee and further improving the safety factor.

[0036] Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Those with ordinary knowledge in the technical field to which the present utility model pertains can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to what is defined by the claims.

Claims

1. A safety latch for an equipment protection door, characterized in that: include: A sleeve (30) is fixedly mounted on the equipment body (100) and is located on the side of the protective door (200); A latch (20) configured to prevent the protective door (200) from opening when inserted into the sleeve (30); A position sensor (10) is arranged on the device body (100) and is used to detect whether the latch (20) is inserted in place; The detection distance of the position sensor (10) is set to H, and it is defined that the position sensor (10) is inserted into place when the distance between the end of the latch (20) and the detection end of the position sensor (10) is less than H. The position sensor (10) is electrically connected to a start circuit in the device body (100), and the start circuit is closed when the position sensor (10) detects that the latch (20) is inserted into place in the sleeve (30).

2. The equipment protection door safety latch according to claim 1, characterized in that: The latch (20) is configured as a "T"-shaped structure, and the latch (20) comprises a first plug rod (21) and a second plug rod (22) which are perpendicular to each other, the first plug rod (21) being welded and fixed at a middle position of the second plug rod (22), the first plug rod (21) being inserted into the sleeve (30), and when the outer wall of the second plug rod (22) contacts the upper end surface of the sleeve (30), the distance between the bottom of the first plug rod (21) and the detection end of the position sensor (10) is less than H.

3. The equipment protection door safety latch according to claim 2, characterized in that: When the outer wall of the second insertion rod (22) contacts the upper end surface of the sleeve (30), the end of the second insertion rod (22) is located in front of the protective door (200) and is used to prevent the protective door (200) from opening.

4. The equipment protection door safety latch according to claim 2, characterized in that: A buckle ring (23) is fixedly provided on the side of the outer wall of the second insertion rod (22) away from the first insertion rod (21), a positioning ring (40) is fixedly provided on the device body (100), and a connecting piece (50) is installed between the positioning ring (40) and the buckle ring (23).

5. The equipment protection door safety latch according to claim 4, characterized in that: The connecting member (50) comprises a steel wire rope or an iron chain.

6. The equipment protection door safety latch according to claim 2, characterized in that: Two protective doors (200) are hingedly mounted on the equipment body (100), and the length of the second insertion rod (22) is greater than the distance between the two protective doors (200).

7. The equipment protection door safety latch according to claim 2, characterized in that: The position sensor (10), the first insertion rod (21), and the sleeve (30) are arranged to be coaxially distributed.

8. The equipment protection door safety latch according to claim 1, characterized in that: The latch pin (20) comprises a stainless steel pin body, the sleeve (30) comprises a stainless steel cylinder body, and the inner diameter of the sleeve (30) is equal to the outer diameter of the latch pin (20).

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