Safety door chain anti-loosening structure

Abstract

The utility model discloses a safety door chain anti-loosening structure which comprises a door body, a chain, a chain wheel and an anti-loosening assembly. A pair of chain wheels is arranged, and the pair of chain wheels are mounted on the door body in a matched manner; the chain is installed on the chain wheel in a matched mode. The anti-loosening assembly is installed on the door body in a matched mode, and the anti-loosening assembly is suitable for being matched with the chain so as to support and limit the chain. The anti-loosening chain has the beneficial effects that compared with an existing chain, the anti-loosening chain is provided with the anti-loosening assembly and the control assembly; the anti-loosening assembly can support and limit the chain so as to prevent the situation that the chain falls off after being used for a long time; an oil port is formed in the anti-loosening assembly, so that a lubricating medium can be conveyed to the chain to ensure the use smoothness of the chain; the control assembly can control opening or closing of the oil port, and then the medium conveying flow is controlled.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of chain, in particular to a safety door chain anti-loose structure. BACKGROUND

[0002] Chain is generally a metal chain ring or ring, which is often used for mechanical transmission and traction. Chain may sag and derail under impact load and long-term work, so that the chain cannot move along the fixed running track, thereby reducing the overall efficiency and reliability, and the derailment of the chain may also cause safety accidents. Therefore, it is necessary to improve the existing chain. CONTENT OF THE PRESENT INVENTION

[0003] The present application aims to provide a chain capable of solving at least one defect in the background art.

[0004] To achieve the above at least one purpose, the technical solution adopted by the present application is as follows: a safety door chain anti-loose structure, comprising a door body, a chain, a chain wheel and an anti-loose assembly; the chain wheel is a pair, and the pair of chain wheels are installed on the door body in cooperation; the chain is installed on the chain wheel in cooperation; the anti-loose assembly is installed on the door body in cooperation, and the anti-loose assembly is adapted to cooperate with the chain to support and limit the chain.

[0005] Preferably, the anti-loose assembly comprises a limiting piece, and the limiting piece is provided with a sliding groove; the lower segment of the chain is adapted to pass through the sliding groove, and the outer chain sheet of the chain extends out of the sliding groove; the sliding groove is adapted to contact the inner chain sheet of the chain to support and limit the chain.

[0006] Preferably, the anti-loose assembly further comprises a supporting piece; the supporting piece is installed on the door body in cooperation and located below the upper segment of the chain; the top of the supporting piece is adapted to contact the upper segment of the chain to support the chain.

[0007] Preferably, the top of the supporting piece is provided with a plurality of limiting columns; the plurality of limiting columns are symmetrically arranged along the center line of the top of the supporting piece to limit the chain.

[0008] Preferably, the limiting piece is provided with an oil port; a control assembly is installed on the oil port in cooperation; the chain is adapted to control the opening or closing of the oil port by moving structure during operation.

[0009] Preferably, the chain is provided with a first driving member; the control assembly comprises a second driving member and a blocking member; the first driving member is adapted to drive the second driving member to move to form the moving structure; part of the blocking member extends into the oil port to block the oil port; the second driving member is adapted to drive the blocking member to move through a driving structure to control the opening or closing of the oil port.

[0010] Preferably, the blocking member is elastically and slidably installed on the limiting member; opposite ends of the blocking member and the second driving member are respectively provided with a cam and a stopper; the stopper is adapted to move along the inclined surface of the cam under the driving of the driving member to form the driving structure; the blocking member is adapted to reset under the elastic force to unblock the oil port.

[0011] Preferably, the first driving member is a first driving rod; the second driving member comprises a driving member and a second driving rod; the first driving rod is adapted to abut against the second driving rod and drive the second driving rod to rotate in operation with the chain to form the moving structure.

[0012] Preferably, the second driving rod is provided in plurality, and the plurality of second driving rods are equidistantly arranged along the circumferential direction of the driving member; the first driving rod is in contact with the side of the limiting member; the width of the second driving rod is equal to the diameter of the driving member; the first driving rod is provided with an inner groove at one end close to the driving member; when the first driving rod drives the second driving rod to rotate, the first driving rod is adapted to not contact the adjacent second driving rod through the inner groove.

[0013] Preferably, the control assembly further comprises a storage frame; the storage frame is installed below the limiting member.

[0014] Compared with the prior art, the application has the beneficial effects that:

[0015] Compared with the existing chain, the application is provided with a loosening prevention assembly and a control assembly; the loosening prevention assembly can support and limit the chain to prevent the chain from falling off and the like under long-time use; the loosening prevention assembly is provided with an oil port, which can deliver lubricating medium to the chain to ensure the smoothness of the chain in use; the control assembly can control the opening or closing of the oil port, thereby controlling the flow of the medium delivery. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the application.

[0017] Figure 2 It is a schematic diagram of the exploded state of the loosening prevention assembly in the application.

[0018] Figure 3 It is partial enlarged view of the utility model when the supporting piece is installed on the door body.

[0019] Figure 4 It is partial enlarged view of the utility model when the control assembly is installed on the limiting piece.

[0020] Figure 5 It is exploded view of the control assembly.

[0021] Figure 6 It is cross section structure view of the utility model after the control assembly is installed.

[0022] Figure 7 It is simplified view of the utility model when the stop block and the cam cooperate.

[0023] Figure 8 It is structure view of the utility model when the first driving rod is arranged on the chain.

[0024] Figure 9 It is structure view of the utility model when the storage frame is arranged.

[0025] In the drawing: door body 1, chain 2, upper section 20, lower section 21, outer chain piece 22, first driving rod 220, inner chain piece 23, sprocket 3, anti-loosening assembly 4, supporting piece 40, limiting column 401, first mounting seat 41, second mounting seat 42, mounting groove 420, oil port 421, first section 4210, second section 4211, third section 4212, mounting hole 422, first fixed disc 4220, limiting piece 43, sliding groove 430, first groove section 4300, second groove section 4301, control assembly 5, driving piece 50, second driving rod 500, inner recess 501, stop block 502, plugging piece 51, cam 510, inclined surface 5100, limiting surface 5101, second fixed disc 511, elastic piece 52, storage frame 53, oil pipe 6. DETAILED DESCRIPTION

[0026] In the following, the application will be further described in conjunction with specific embodiments, and it should be noted that the following described embodiments or technical features can be combined to form new embodiments without conflict.

[0027] In the description of the present application, it should be noted that for orientation words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0029] The terms "include" and "have" and any variations thereof in the specification and claims of the present application are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] One preferred embodiment of the present application, as shown in Figures 1 to 4 A safety door chain anti-loose structure, including a door body 1, a chain 2, a chain wheel 3 and an anti-loose assembly 4; the chain wheel 3 has a pair, and the pair of chain wheels 3 are cooperatively installed on the door body 1; the chain 2 is cooperatively installed on the chain wheel 3; the anti-loose assembly 4 is cooperatively installed on the door body 1, and the anti-loose assembly 4 can be cooperatively connected with the chain 2 to support and limit the chain 2.

[0031] The advantages of the present scheme over the traditional scheme are that the present scheme is provided with an anti-loose assembly 4 and a control assembly 5; the anti-loose assembly 4 can support and limit the chain 2, so that the chain 2 will not sag or derail under long-time working impact load, and the chain 2 can move along the fixed running track under the action of the anti-loose assembly 4, thereby improving the overall efficiency and reliability; the anti-loose assembly 4 is provided with an oil port 421, and external lubricating medium can be delivered to the chain 2 through the oil port 421 to lubricate the chain 2, ensuring the smoothness of the chain 2 during use; the control assembly 5 can control the opening or closing of the oil port 421, thereby controlling the flow of the lubricating medium.

[0032] In the embodiment, the anti-loosening assembly 4 comprises a limiting piece 43, and the limiting piece 43 is provided with a sliding groove 430; the lower section 21 of the chain 2 can pass through the sliding groove 430, and the outer link plate 22 of the chain 2 extends out of the sliding groove 430; the sliding groove 430 can be in contact with the inner link plate 23 of the chain 2 to support and limit the chain 2.

[0033] Specifically, as shown in Figure 1 , Figure 2 and Figure 4 , the sliding groove 430 is divided into a first groove section 4300 and a second groove section 4301; when the lower section 21 of the chain 2 passes through the sliding groove 430, the inner link plate 23 of the chain 2 is located in the first groove section 4300, the roller of the chain 2 is located in the second groove section 4301, and the outer link plate 22 of the chain 2 is located outside the limiting piece 43; the first groove section 4300 can be in contact with the inner link plate 23 of the chain 2 to support and limit the inner link plate 23, thereby supporting and limiting the chain 2.

[0034] It can be understood that the anti-loosening assembly 4 further comprises a first mounting seat 41 and a second mounting seat 42; the first mounting seat 41 is threadedly connected to the door body 1 by bolts, the second mounting seat 42 is threadedly connected to the first mounting seat 41 by bolts, the second mounting seat 42 is provided with a mounting groove 420, and the limiting piece 43 is mounted in the mounting groove 420.

[0035] As can be seen from the above, the lower section 21 of the chain 2 can pass through the limiting piece 43, which is equivalent to that the limiting piece 43 can support and limit the lower section 21 of the chain 2; if the chain 2 needs to work for a long time, the upper section 20 of the chain 2 also needs to be supported and limited; therefore, in the embodiment, as shown in Figures 1 to 3 , the anti-loosening assembly 4 further comprises a supporting piece 40. The supporting piece 40 is cooperatively mounted to the door body 1 and located below the upper section 20 of the chain 2; the top of the supporting piece 40 can be in contact with the upper section 20 of the chain 2 to support the chain 2.

[0036] Specifically, the supporting piece 40 is threadedly connected to the door body 1 by bolts, and the supporting piece 40 is located between the upper section 20 and the lower section 21 of the chain 2; the top of the supporting piece 40 is in contact with the upper section 20 of the chain 2, and the upper section 20 of the chain 2 may sag under the action of gravity and long-term use; the top of the supporting piece 40 is in contact with the upper section 20 of the chain 2 to support the upper section 20 of the chain 2, and an upward force is applied to the upper section 20 of the chain 2 to offset the self-gravity of the upper section 20 of the chain 2.

[0037] It can be understood that the top of the support 40 is provided with a plurality of limiting columns 401; the plurality of limiting columns 401 are symmetrically arranged along the center line of the top of the support 40 to limit the chain 2. The specific number of the limiting columns 401 can be selected by those skilled in the art according to actual needs; in the embodiment, as shown in Figure 3 , the number of the limiting columns 401 is six.

[0038] It should be known that if the chain 2 is not added with lubricating medium for a long time, the mechanical wear between the chain 2 will be aggravated, the running noise of the chain 2 will be significantly increased, the running resistance of the chain 2 will be increased, the chain 2 is easy to rust and corrode, and the chain 2 is easy to break; therefore, the chain 2 on the safety door needs to be frequently added with lubricating medium to ensure the normal operation of the safety door.

[0039] Therefore, in the embodiment, the limiting member 43 is provided with an oil port 421; the oil port 421 is provided with an oil pipe 6, one end of the oil pipe 6 is connected with the outside, and the other end of the oil pipe 6 is connected with the oil port 421. Specifically, as shown in Figure 6 , the oil port 421 is divided into three sections, the first section 4210 can be connected with the oil pipe 6, the third section 4212 can be communicated with the outside to deliver the lubricating medium in the oil port 421 to the chain 2, and the second section 4211 can connect the first section 4210 and the third section 4212.

[0040] It should be known that if the chain 2 is always delivered with lubricating medium, the oil film on the chain 2 can be too thick, which can cause the chain 2 and the sprocket 3 to slip, thereby affecting the efficiency of power transmission and existing a certain degree of safety risk; excessive delivery of lubricating medium can also cause the formation of oil sludge on the chain 2, and the accumulation of the oil sludge can cause the chain 2 to jam during operation, thereby affecting the normal operation of the chain 2.

[0041] Therefore, in the embodiment, the oil port 421 is cooperatively provided with a control assembly 5; the chain 2 is adapted to control the opening or closing of the oil port 421 by moving structure during operation.

[0042] In the embodiment, as shown in Figure 5 and Figure 6 , the chain 2 is provided with a first driving member; the control assembly 5 includes a second driving member and a blocking member 51; the first driving member is adapted to drive the second driving member to move to form a moving structure; part of the blocking member 51 extends into the oil port 421 to block the oil port 421; the second driving member is adapted to drive the blocking member 51 to move through a driving structure to control the opening or closing of the oil port 421.

[0043] From the above, the third section 4212 of the oil port 421 is the key to conveying the lubricating medium in the oil port 421 to the chain 2; one end of the blocking piece 51 can extend into the third section 4212 of the oil port 421 to block the third section 4212, so that the lubricating medium is located in the first section 4210 and the second section 4211 of the oil port 421, and cannot enter the third section 4212. The blocking piece 51 is connected to the second driving piece through the driving structure, and the second driving piece can drive the blocking piece 51 to move along its axis through the driving structure, so that the second driving piece can drive the blocking piece 51 to block or not to block the third section 4212, thereby realizing the function of controlling the opening or closing of the oil port 421.

[0044] For the driving structure connecting the second driving piece and the blocking piece 51, there are various specific structural setting modes, and the preferred setting mode in the embodiment is that, as shown in Figure 4 and Figure 7 , the blocking piece 51 is elastically and slidably installed in the limiting piece 43; the opposite end of the blocking piece 51 and the second driving piece is respectively provided with a cam 510 and a stop block 502; the stop block 502 can be driven by the second driving piece to move along the inclined surface 5100 of the cam 510 to form the driving structure; the blocking piece 51 can be reset under the action of the elastic force to release the blocking of the oil port 421.

[0045] From the above, the limiting piece 43 is installed on the second mounting seat 42; therefore, as shown in Figure 6 , the second mounting seat 42 and the limiting piece 43 are both provided with a mounting hole 422; the mounting hole 422 is coaxially arranged with the third section 4212 of the oil port 421, is in communication with the third section 4212, and is located above the third section 4212. A first fixing disc 4220 is arranged in the mounting hole 422, a second fixing disc 511 is arranged on the blocking piece 51, and an elastic piece 52 is sleeved outside the blocking piece 51; the two ends of the elastic piece 52 are connected with the first fixing disc 4220 and the second fixing disc 511 respectively. The second driving piece carrying the stop block 502 is rotatably installed in the mounting hole 422, and the second driving piece extends out of the mounting hole 422 at the end away from the blocking piece 51 to be connected with the chain 2 through the moving structure.

[0046] For the moving structure, there are various specific structural setting modes, and the preferred setting mode in the embodiment is that, as shown in Figure 4 , Figure 5 and Figure 8As shown, the first driving member is a first driving rod 220; the second driving member includes a driving member 50 and a second driving rod 500; the first driving rod 220 is adapted to abut against the second driving rod 500 and drive the second driving rod 500 to rotate during operation of the chain 2 to form a moving structure. A cam 510 is disposed on the driving member 50, and the driving member 50 is rotatably mounted in the mounting hole 422; there are multiple second driving rods 500, which are equidistantly arranged along the circumference of the driving member 50; the first driving rod 220 contacts the side of the limiting member 43; the width of the second driving rod 500 is equal to the diameter of the driving member 50; the driving member 50 is also provided with an inner groove 501; when the first driving rod 220 drives the second driving rod 500 to rotate, the first driving rod 220 can avoid contact with other positions of the driving member 50 through the inner groove 501.

[0047] Specifically, in this embodiment, the number of second drive rods 500 is set to four; the first drive rod 220 is disposed on one of the outer chain pieces 22 of the chain 2; the four second drive rods 500 are equidistantly arranged along the circumferential direction of the drive member 50, that is, the angle between adjacent second drive rods 500 is 90°; one of the four second drive rods 500 needs to extend out of the side of the limiting member 43, and the side of the adjacent second drive rod 500 of the second drive rod 500 extending out of the side of the limiting member 43 needs to be flush with the side of the limiting member 43; the first drive rod 220 needs to contact the side of the limiting member 43; the inner groove 501 is located at the root of the second drive rod 500; this arrangement allows the first drive rod 220 to drive the second drive rod 500 to rotate 90°, and after the extended second drive rod 500 has rotated, its adjacent second drive rod 500 can extend out again; the inner groove 501 ensures that the adjacent second drive rod 500 will not contact the first drive rod 220 when it extends out during rotation.

[0048] As can be seen from the above, the arrangement of the first drive rod 220 and the second drive rod 500 allows the first drive rod 220 to drive the second drive rod 500 to rotate along with the operation of the chain 2, thereby opening the oil port 421; and when the first drive rod 220 abuts against the second drive rod 500 again and drives it to rotate after the chain 2 has run one revolution, the oil port 421 can be closed.

[0049] For ease of understanding, the working process of the second driving component and the sealing component 51 will be described in detail below.

[0050] Initially, such as Figure 7 As shown, the stop block 502 on the drive member 50 is located at the bottom of the cam 510 and in contact with it, that is, it is located at the bottom of the inclined surface 5100 of the cam 510 and in contact with the bottom of the inclined surface 5100. At this time, the sealing member 51 does not extend into the third section 4212 of the oil port 421.

[0051] When the sealing element 51 needs to block the third section 4212 of the oil port 421, the driving element 50 rotates along its own axis under the combined drive of the first driving rod 220 and the second driving rod 500. The stop block 502 rotates with the rotation of the driving element 50. The stop block 502 contacts the inclined surface 5100 of the cam 510 and abuts against the inclined surface 5100 during rotation, moving along the inclined surface 5100 to drive the sealing element 51 to move downward along its own axis, thereby blocking the third section 4212 of the oil port 421. At this time, when the stop block 502 moves to the top of the inclined surface 5100, it abuts against the limiting surface 5101 at the top of the cam 510, so that the sealing element 51 always remains in a blocking state.

[0052] When the sealing component 51 needs to unblock the third section 4212 of the oil port 421, the drive component 50 is driven to rotate again by the cooperation of the first drive rod 220 and the second drive rod 500, so that the stop block 502 disengages from the limiting surface 5101 at the top of the cam 510; since the sealing component 51 is elastically slidably installed by the elastic component 52, the sealing component 51 can be reset under the elastic force of the elastic component 52, thereby unblocking the third section 4212.

[0053] The limiting surface 5101 is a surface at the top of the cam 510. The limiting surface 5101 can be flat or curved. After the stop block 502 moves along the inclined surface 5100 to drive the sealing member 51 into a blocking state, the stop block 502 needs to abut against the top of the cam 510 to ensure that the sealing member 51 can continue to maintain the blocking state. The function of the limiting surface 5101 is to allow the stop block 502 to abut against the sealing member 51 through the limiting surface 5101.

[0054] In this embodiment, as Figure 9 As shown, the control component 5 also includes a storage frame 53; the storage frame 53 is installed below the limiting member 43; after the chain 2 is transported with lubricating medium, some lubricating medium will inevitably drip onto the ground, and the storage frame 53, located below the limiting member 43, can catch the dripping lubricating medium to prevent it from dripping onto the ground and affecting the environment.

[0055] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A safety door chain anti-loosening structure, characterized in that, The device includes a door body, a chain, sprockets, and an anti-loosening component; there is a pair of sprockets, and the pair of sprockets are fitted together and installed on the door body; the chain is fitted together and installed on the sprockets; the anti-loosening component is fitted together and installed on the door body, and the anti-loosening component is adapted to cooperate with the chain to support and limit the chain.

2. The anti-loosening structure for a safety door chain as described in claim 1, characterized in that, The anti-loosening component includes a limiting member with a sliding groove; the lower section of the chain is adapted to pass through the sliding groove, and the outer chain piece of the chain extends out of the sliding groove; the sliding groove is adapted to contact the inner chain piece of the chain to support and limit the chain.

3. The anti-loosening structure for a safety door chain as described in claim 2, characterized in that, The anti-loosening component also includes a support member; the support member is fitted onto the door body and located below the upper section of the chain; the top of the support member is adapted to contact the upper section of the chain to support the chain.

4. The anti-loosening structure for a safety door chain as described in claim 3, characterized in that, The top of the support member is provided with multiple limiting posts; the multiple limiting posts are symmetrically arranged along the center line of the top of the support member to limit the chain.

5. A safety door chain anti-loosening structure as described in any one of claims 2-4, characterized in that, The limiting member is provided with an oil port; a control component is installed on the oil port; the chain is adapted to control the opening or closing of the oil port by the control component through a moving structure during operation.

6. The anti-loosening structure for a safety door chain as described in claim 5, characterized in that, A first driving member is provided on the chain; the control component includes a second driving member and a blocking member; the first driving member is adapted to drive the second driving member to move to form the moving structure; a portion of the blocking member extends into the oil port to block the oil port; The second driving member is adapted to drive the sealing member to move via a driving structure in order to control the opening or closing of the oil port.

7. The anti-loosening structure for a safety door chain as described in claim 6, characterized in that, The sealing member is elastically slidably mounted on the limiting member; the opposite ends of the sealing member and the second driving member are respectively provided with a cam and a stop; the stop is adapted to move along the inclined surface of the cam under the drive of the driving member to form the driving structure; the sealing member is adapted to reset under the action of elastic force to release the blockage of the oil port.

8. The anti-loosening structure for a safety door chain as described in claim 6, characterized in that, The first driving member is a first driving rod; the second driving member includes a driving member and a second driving rod; the first driving rod is adapted to abut against the second driving rod during operation of the chain and drive the second driving rod to rotate to form the moving structure.

9. The anti-loosening structure for a safety door chain as described in claim 8, characterized in that, There are multiple second drive rods, which are equidistantly arranged along the circumference of the drive member; the first drive rod contacts the side of the limiting member; the width of the second drive rod is equal to the diameter of the drive member; the first drive rod has an inner groove at one end near the drive member; when the first drive rod drives the second drive rod to rotate, the first drive rod is adapted to not contact the adjacent second drive rod through the inner groove.

10. The anti-loosening structure for a safety door chain as described in claim 9, characterized in that, The control component also includes a storage frame; the storage frame is installed below the limiting member.

Images