Chain transmission type telescopic hanging bracket

Abstract

The utility model discloses a chain transmission type telescopic hanging bracket which comprises a supporting arm, a chain transmission mechanism and a chain transmission mechanism. The tensioning mechanism comprises a tensioning frame and a supporting frame which are symmetrically arranged, a pressure sensor is arranged on the tensioning frame, and a first spring is arranged between the pressure sensor and the supporting frame; wherein the tensioning frame and the supporting frame are both arranged in an arc shape, the tensioning frame is arranged in the supporting arm in a hinged mode, and the chain abuts against the outer arc face of the supporting frame. According to the chain transmission type telescopic hanging bracket, the chain is supported and tensioned through the tensioning frame and the supporting frame which are symmetrically arranged, so that the chain always keeps stable transmission and is not prone to falling off, compared with the prior art, the tensioning degree of the chain can be automatically adjusted according to the looseness degree of the chain under different conditions, and the chain transmission type telescopic hanging bracket is convenient to use. And the chain is not easy to fall off.

Description

Technical Field

[0001] The utility model relates to a hanger, in particular to a chain-driven telescopic hanger. Background Art

[0002] The chain-driven telescopic hanger is a hanger that is telescopically moved by chain drive.

[0003] Publication number CN213910008U, publication date 2021-08-10, discloses a chain-driven telescopic hanger structure, including a main arm, a telescopic arm, a telescopic chain, a counterweight arm and a counterweight chain. The telescopic arm is connected to the main arm through the telescopic chain and is located at the outer end of the main arm. The counterweight arm is connected to the main arm through the counterweight chain and is located at the inner end of the main arm. The telescopic arm and the counterweight arm move relative to each other along the length direction of the main arm.

[0004] In the prior art including the above-mentioned patent, a fixed sprocket structure is provided to connect the telescopic chain and the counterweight chain, thereby realizing the linkage between the telescopic arm and the counterweight arm, and ensuring the safety and stability of the telescopic arm when extending and retracting. However, during the transmission process of the chain, since the counterweight chain and the counterweight arm themselves have a certain weight, the pulling force on the chain is relatively large, which can easily cause the chain to loosen and fall off. Utility Model Content

[0005] The utility model aims to provide a chain-driven telescopic hanger, which is used to solve the problem in the prior art that the counterweight structure has a large pulling force on the chain, causing the chain to be easily loosened and fall off.

[0006] In order to achieve the above object, the utility model provides the following technical solution: a chain-driven telescopic hanger, comprising:

[0007] a supporting arm having a chain disposed therein;

[0008] The tensioning mechanism comprises a tensioning frame and a supporting frame which are symmetrically arranged, a pressure sensor is arranged on the tensioning frame, and a first spring is arranged between the pressure sensor and the supporting frame;

[0009] Wherein, the tensioning frame and the supporting frame are both arranged in an arc shape, the tensioning frame is hingedly arranged in the supporting arm, and the chain abuts against the outer arc surface of the supporting frame.

[0010] Preferably, it further comprises an electric push rod symmetrically arranged in the support arm, a fixing plate is fixedly arranged at an output end of the electric push rod, and a connecting rod is hingedly arranged between the fixing plate and the tensioning frame.

[0011] Preferably, it also includes a lubrication gear rotatably arranged on the support frame, which is meshedly connected with the chain.

[0012] Preferably, it further comprises a convex shell arranged at the bottom of the support frame, in which an oil nozzle is fixedly arranged, and an upper oil groove is opened on the top of the oil nozzle, and the upper oil groove is arranged in a semicircular shape.

[0013] Preferably, it also includes a bracket slidably arranged in the oil outlet opened at the arc top of the upper oil groove, on which an upper oil wheel and a sealing plate are arranged.

[0014] Preferably, the blocking plate is arranged in an arc shape, and the inner arc surface is in contact with the arc top of the upper oil groove.

[0015] Preferably, oil-absorbing cotton is fixedly provided on the surface of the upper oil wheel, and the upper oil wheel abuts against the lubrication gear.

[0016] Preferably, it also includes an oil storage tank opened in the support frame, and the oil storage tank is connected to the oil nozzle through an oil pipe.

[0017] Preferably, it further comprises limiting plates symmetrically arranged on the supporting frame, and the chain is located between the two limiting plates.

[0018] Preferably, it further comprises a tensioning wheel rotatably arranged on the support frame, which abuts against the chain, and a rubber ring is fixedly arranged on the surface of the tensioning wheel.

[0019] In the above technical scheme, the utility model provides a chain-driven telescopic hanger, which has the following beneficial effects: the chain is supported and tensioned by a symmetrically arranged tensioning frame and a supporting frame. After the chain has been used for a period of time, the chain will become loose due to the repeated pulling of the chain by the moving block. When the chain is slightly loose, the pressure on the supporting frame becomes smaller, thereby reducing the pressure on the first spring. Since the first spring needs to restore its deformation, it pushes the supporting frame to move, so that the supporting frame further pushes the chain, thereby tensioning the chain, thereby realizing dynamic adjustment of the chain tension. When the chain is loose to a large extent, the pressure sensor receives When the pressure is less than a preset value, the first end of the tensioning frame is pulled to rotate around the other end, thereby driving the support frame to push the chain through the tensioning frame, thereby tensioning the chain, so that the pressure value felt by the pressure sensor is within a preset range, so that the chain can always maintain stable transmission and is not easy to fall off. Compared with the existing technology, it can automatically adjust the tension of the chain according to the looseness of the chain under different situations, so that the chain is not easy to fall off, without manual adjustment, quick and convenient, reducing maintenance costs, and a high degree of automation. It can always stabilize the chain within a preset tension range, so that the chain can always maintain stable transmission, thereby improving the stability of the telescopic hanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 A schematic diagram of a three-dimensional structure provided for an embodiment of the utility model;

[0022] Figure 2 A schematic diagram of a front cross-sectional structure provided for an embodiment of the utility model;

[0023] Figure 3 A schematic diagram of the structure of the present invention;

[0024] Figure 4 A schematic diagram of the structure B provided by an embodiment of the utility model;

[0025] Figure 5 A schematic diagram of the C structure provided by an embodiment of the utility model;

[0026] Figure 6 A schematic diagram of a top view of a three-dimensional structure of a tensioning mechanism provided in an embodiment of the utility model;

[0027] Figure 7 A bottom-view three-dimensional structural schematic diagram of a tensioning mechanism provided in an embodiment of the utility model;

[0028] Figure 8 A schematic diagram of the side sectional structure provided for an embodiment of the utility model.

[0029] Description of reference numerals:

[0030] 1. Support arm; 2. Telescopic arm; 3. Chain; 31. Moving block; 4. Fixed plate; 5. Connecting rod; 6. Tensioning mechanism; 61. Tensioning frame; 611. Pressure sensor; 612. First spring; 62. Support frame; 621. Oil storage tank; 622. Limit plate; 623. Tensioning wheel; 6231. Rubber ring; 624. Lubricating gear; 625. Convex shell; 6251. Second spring; 6252. Oil nozzle; 6253. Upper oil tank; 626. Upper oil wheel; 6261. Bracket; 6262. Sealing plate; 6263. Oil absorbing cotton; 7. Electric push rod; 8. Oil pipe. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0032] like Figure 1-8As shown, a chain-driven telescopic hanger comprises:

[0033] A support arm 1, in which a chain 3 is arranged;

[0034] The tensioning mechanism 6 comprises a tensioning frame 61 and a supporting frame 62 which are symmetrically arranged, a pressure sensor 611 is arranged on the tensioning frame 61, and a first spring 612 is arranged between the pressure sensor 611 and the supporting frame 62;

[0035] The tensioning frame 61 and the supporting frame 62 are both arranged in an arc shape. The tensioning frame 61 is hingedly arranged in the supporting arm 1 , and the chain 3 abuts against the outer arc surface of the supporting frame 62 .

[0036] Specifically, it also includes an electric push rod 7 symmetrically arranged in the support arm 1, a fixing plate 4 is fixedly arranged at its output end, and a connecting rod 5 is hingedly arranged between the fixing plate 4 and the tensioning frame 61. Figure 2 As shown, three sprockets are rotatably arranged inside the support arm 1, and the three sprockets are arranged in a triangle. The chain 3 is meshed with the sprockets in sequence, and the active sprocket is driven to rotate, thereby driving the moving block 31 set on the chain 3 to move, thereby driving the telescopic arm 2 fixedly connected to the moving block 31 to move, thereby realizing the telescopic function. The three sprockets are arranged in a triangle, so that the length of the chain 3 between two adjacent sprockets is reduced, so that the chain 3 is more stable during transmission and is not prone to shaking.

[0037] Furthermore, the chain 3 is supported and tensioned by means of the symmetrically arranged tensioning frame 61 and the supporting frame 62. After the chain 3 has been used for a period of time, the chain 3 will become loose due to the repeated pulling of the chain 3 by the moving block 31. When the chain 3 becomes slightly loose, the pressure on the supporting frame 62 becomes smaller, thereby reducing the pressure on the first spring 612. Since the first spring 612 needs to restore its deformation, it pushes the supporting frame 62 to move, thereby causing the supporting frame 62 to further push the chain 3, thereby tensioning the chain 3, thereby dynamically adjusting the tension of the chain 3, thereby keeping the chain 3 in a tensioned state, effectively improving the stability of the chain 3 during transmission, thereby improving the stability of the movement of the telescopic arm 2.

[0038] Furthermore, when the chain 3 is loosened to a large extent, the pressure received by the pressure sensor 611 is less than the preset value, and the electric push rod 7 is activated, thereby driving the fixing plate 4 to move upward, thereby pulling the first end of the tensioning frame 61 to rotate around the other end through the connecting rod 5 (such as Figure 2 As shown, the first end of the tensioning frame 61 is an end hinged to the connecting rod 5), so that the tensioning frame 61 drives the support frame 62 to push the chain 3, thereby tensioning the chain 3, so that the pressure value felt by the pressure sensor 611 is within a preset range, so that the chain 3 always maintains stable transmission and is not easy to fall off.

[0039] In the above technology, the chain 3 is supported and tensioned by the symmetrically arranged tensioning frame 61 and the supporting frame 62. After the chain 3 has been used for a period of time, the chain 3 will become loose due to the repeated pulling of the moving block 31 on the chain 3. When the chain 3 is slightly loose, the pressure on the supporting frame 62 becomes smaller, thereby reducing the pressure on the first spring 612. Since the first spring 612 needs to restore its deformation, it pushes the supporting frame 62 to move, so that the supporting frame 62 further pushes the chain 3, thereby tensioning the chain 3, thereby dynamically adjusting the tension of the chain 3. When the chain 3 is loosened to a large extent, the pressure received by the pressure sensor 611 is less than the preset value, pulling the first end of the tensioning frame 61 to rotate around the other end (such as Figure 2 As shown, the first end of the tensioning frame 61 is an end hinged to the connecting rod 5), so that the tensioning frame 61 drives the support frame 62 to push the chain 3, thereby tensioning the chain 3, so that the pressure value felt by the pressure sensor 611 is within a preset range, so that the chain 3 always maintains stable transmission and is not easy to fall off. Compared with the prior art, it is possible to automatically adjust the tension of the chain 3 according to the looseness of the chain 3 under different conditions, so that the chain 3 is not easy to fall off, and no manual adjustment is required. It is quick and convenient, reduces maintenance costs, and has a high degree of automation. It can always stabilize the chain 3 within a preset tension range, so that the chain 3 always maintains stable transmission, thereby improving the stability of the telescopic hanger.

[0040] As a further embodiment of the present invention, it also includes a lubrication gear 624 rotatably disposed on the support frame 62 , which is meshedly connected with the chain 3 .

[0041] Specifically, the lubricating gear 624 can guide and limit the chain 3 to prevent the chain 3 from falling off the support frame 62.

[0042] As a further embodiment of the present invention, it also includes a convex shell 625 arranged at the bottom of the support frame 62, in which an oil nozzle 6252 is fixedly arranged, and an upper oil groove 6253 is opened on the top of the oil nozzle 6252, and the upper oil groove 6253 is arranged in a semicircular shape.

[0043] Specifically, it also includes a bracket 6261 slidably arranged in the oil outlet opened at the arc top of the upper oil groove 6253, on which the upper oil wheel 626 and the blocking plate 6262 are arranged. The blocking plate 6262 is arranged in an arc shape, and the inner arc surface is in contact with the arc top of the upper oil groove 6253. Figure 4As shown, the driving bracket 6261 moves downward, thereby driving the sealing plate 6262 to move downward and squeeze the second spring 6251, so that the sealing plate 6262 is away from the oil outlet of the upper oil groove 6253. During the movement of the sealing plate 6262, the lubricating oil in the oil nozzle 6252 enters the upper oil groove 6253 through the oil outlet of the upper oil groove 6253, and the upper oil wheel 626 also follows the bracket 6261 to enter the upper oil groove 6253, so that the surface of the upper oil wheel 626 is adhered to the lubricating oil, and then the driving bracket 6261 drives the upper oil wheel 626 to oil the chain 3, which can realize automatic lubrication of the chain 3 without the need for staff to disassemble and load materials, saving maintenance costs, reducing the friction between the chain 3 and the sprocket, thereby further reducing the vibration caused by the friction between the chain 3 and the sprocket, and further improving the stability of the chain 3 during transmission.

[0044] As a further embodiment of the present invention, an oil-absorbing cotton 6263 is fixedly provided on the surface of the upper oil wheel 626 , and the upper oil wheel 626 abuts against the lubrication gear 624 .

[0045] Specifically, during the transmission process of the chain 3, the lubrication gear 624 is driven to rotate, and the tooth groove wall of the lubrication gear 624 pushes the upper oil wheel 626 to move downward, and at the same time drives the upper oil wheel 626 to rotate, thereby driving the bracket 6261 and the sealing plate 6262 to move downward through the upper oil wheel 626, thereby opening the oil outlet of the upper oil groove 6253, so that the lubricating oil enters the upper oil groove 6253, and the upper oil wheel 626 enters the upper oil groove 6253. As the upper oil wheel 626 rotates, the oil-absorbing cotton 6263 on the surface of the upper oil wheel 626 evenly absorbs the lubricating oil.

[0046] Furthermore, as the lubrication gear 624 rotates, the oiling wheel 626 re-enters the next tooth groove along the tooth groove wall of the next tooth groove under the push of the second spring 6251, thereby oiling the tooth groove wall and making the sealing plate 6262 seal the oil outlet, and so on and so forth, and then the chain shaft of the chain 3 is evenly oiled through the lubrication gear 624, thereby realizing automatic oiling of the chain 3 and further reducing maintenance costs. At the same time, there is no need for an additional driving mechanism to drive the oiling wheel 626 to move, so the structure is simplified and the manufacturing is convenient, and the oil output can be controlled to reduce the waste of lubricating oil.

[0047] As a further embodiment of the present invention, the present invention further includes an oil storage tank 621 disposed in the support frame 62 , and the oil storage tank 621 is connected to the oil nozzle 6252 via an oil pipe 8 .

[0048] Specifically, the oil storage tank 621 supplies oil to the oil nozzle 6252 through the oil pipe 8 .

[0049] As a further embodiment provided by the present invention, it further comprises limiting plates 622 symmetrically arranged on the support frame 62 , and the chain 3 is located between the two limiting plates 622 .

[0050] Specifically, the chain 3 is further limited by the limiting plate 622 , thereby effectively preventing the chain 3 from falling off the supporting frame 62 .

[0051] As a further embodiment provided by the present invention, it further comprises a tensioning wheel 623 rotatably arranged on the support frame 62 , which abuts against the chain 3 , and a rubber ring 6231 is fixedly arranged on the surface of the tensioning wheel 623 .

[0052] Specifically, when the chain 3 is transmitting, the friction resistance between the chain 3 and the rubber ring 6231 drives the tensioning wheel 623 to rotate, thereby guiding the chain 3. At the same time, due to the friction damping between the chain 3 and the rubber ring 6231, the vibration of the chain 3 during the transmission process is prevented, thereby improving the stability of the chain 3 during the transmission process.

[0053] Working principle: The chain 3 is supported and tensioned by the symmetrically arranged tensioning frame 61 and the supporting frame 62. After the chain 3 has been used for a period of time, the chain 3 will become loose due to the repeated pulling of the moving block 31 on the chain 3. When the chain 3 is slightly loose, the pressure on the supporting frame 62 becomes smaller, thereby reducing the pressure on the first spring 612. The first spring 612 needs to restore its deformation, thereby pushing the supporting frame 62 to move, so that the supporting frame 62 further pushes the chain 3, thereby tensioning the chain 3, thereby dynamically adjusting the tension of the chain 3. When the chain 3 is loosened to a large extent, the pressure received by the pressure sensor 611 is less than the preset value, and the electric push rod 7 is started, thereby driving the fixed plate 4 to move upward, thereby pulling the first end of the tensioning frame 61 to rotate around the other end through the connecting rod 5 (such as Figure 2 As shown in the figure, the first end of the tensioning frame 61 is an end hinged with the connecting rod 5), so that the tensioning frame 61 drives the support frame 62 to push the chain 3, thereby tensioning the chain 3, so that the pressure value felt by the pressure sensor 611 is within the preset range, so that the chain 3 always maintains stable transmission and is not easy to fall off. During the transmission process of the chain 3, the lubrication gear 624 is driven to rotate, and the tooth groove wall of the lubrication gear 624 pushes the upper oil wheel 626 to move downward, and at the same time drives the upper oil wheel 626 to rotate, thereby driving the bracket 6261 and the blocking plate 6 through the upper oil wheel 626. 262 moves downward, thereby opening the oil outlet of the upper oil groove 6253, so that the lubricating oil enters the upper oil groove 6253, and the upper oil wheel 626 enters the upper oil groove 6253. With the rotation of the upper oil wheel 626, the oil-absorbing cotton 6263 on the surface of the upper oil wheel 626 evenly absorbs the lubricating oil. With the rotation of the lubricating gear 624, the upper oil wheel 626 re-enters the next tooth groove along the tooth groove wall of the next tooth groove under the push of the second spring 6251, thereby oiling the tooth groove wall, and then evenly oiling the chain shaft of the chain 3 through the lubricating gear 624.

[0054] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A chain-driven telescopic hanger, characterized in that: include: A support arm (1) having a chain (3) disposed therein; A tensioning mechanism (6), comprising a tensioning frame (61) and a supporting frame (62) which are symmetrically arranged, wherein a pressure sensor (611) is arranged on the tensioning frame (61), and a first spring (612) is arranged between the pressure sensor (611) and the supporting frame (62); The tensioning frame (61) and the supporting frame (62) are both arranged in an arc shape, the tensioning frame (61) is hingedly arranged in the supporting arm (1), and the chain (3) abuts against the outer arc surface of the supporting frame (62).

2. A chain-driven telescopic hanger according to claim 1, characterized in that: It also includes an electric push rod (7) symmetrically arranged in the support arm (1), the output end of which is fixedly provided with a fixing plate (4), and a connecting rod (5) is hingedly provided between the fixing plate (4) and the tensioning frame (61).

3. A chain-driven telescopic hanger according to claim 1, characterized in that: It also includes a lubrication gear (624) rotatably arranged on the support frame (62) and meshingly connected with the chain (3).

4. A chain-driven telescopic hanger according to claim 1, characterized in that: It also includes a convex shell (625) arranged at the bottom of the support frame (62), in which an oil nozzle (6252) is fixedly arranged, and an upper oil groove (6253) is opened on the top of the oil nozzle (6252), and the upper oil groove (6253) is arranged in a semicircular shape.

5. A chain-driven telescopic hanger according to claim 4, characterized in that: It also includes a bracket (6261) slidably arranged in the oil outlet opened at the arc top of the upper oil groove (6253), on which the upper oil wheel (626) and the blocking plate (6262) are arranged.

6. A chain-driven telescopic hanger according to claim 5, characterized in that: The blocking plate (6262) is arranged in an arc shape, and the inner arc surface is in contact with the arc top of the upper oil groove (6253).

7. The chain-driven telescopic hanger according to claim 5, characterized in that: An oil-absorbing cotton (6263) is fixedly arranged on the surface of the upper oil wheel (626), and the upper oil wheel (626) is in contact with the lubrication gear (624).

8. The chain-driven telescopic hanger according to claim 1, characterized in that: It also includes an oil storage tank (621) disposed in the support frame (62), wherein the oil storage tank (621) is connected to the oil nozzle (6252) via an oil pipe (8).

9. The chain-driven telescopic hanger according to claim 1, characterized in that: It also includes limiting plates (622) symmetrically arranged on the support frame (62), and the chain (3) is located between the two limiting plates (622).

10. The chain-driven telescopic hanger according to claim 1, characterized in that: It also includes a tensioning wheel (623) rotatably arranged on the support frame (62), which is in contact with the chain (3), and a rubber ring (6231) is fixedly arranged on the surface of the tensioning wheel (623).

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