Descent control device

Abstract

The utility model relates to the technical field of descent control devices, and discloses a descent control device which comprises a suspension shell and a side sealing plate, the upper end of the suspension shell is of an outwards-protruding structure, the middle of the suspension shell and the inner wall of the outwards-protruding part of the suspension shell are rotationally connected with a first shaft and a second shaft respectively, and the outer wall of the first shaft is fixedly connected with a rope disc and a first gear. A damping unit and a second gear in meshed connection with the first gear are mounted on the outer wall of the second shaft, and two rope openings are formed in the lower end of the suspension shell; the damping unit is independently arranged in the outer convex part of the suspension shell, when the rope drives the rope disc to rotate, the gear is used for driving the damping unit to rotate, and the friction block in the damping unit is outwards supported under the action of centrifugal force and rubs with the inner wall of the suspension shell, so that the speed of the rope is reduced; and meanwhile, the displacement position of the friction block is limited by the butterfly-shaped block sliding groove, so that the problem that the rope cannot descend due to the fact that the friction block and the inner wall of the suspension shell are clamped is solved, the moving smoothness is guaranteed, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of descent control devices, in particular to a descent control device. Background Art

[0002] A descender is an auxiliary device used for slowing down descent from a height. In the event of a fire in a high-rise building or other emergency situations, a descender can be used to slowly descend people or objects from a height. The main function of a descender is to slow down the rope to prevent damage to objects or injuries to people due to the rope descending too quickly when one end of the rope is carrying a heavy object or person.

[0003] The existing descender is mainly composed of a suspension shell, a rope drum and a friction block. The rope slides with the rope drum and passes through the suspension shell. When the rope is subjected to force, it drives the rope drum to rotate, and the friction block applies resistance to slow down the rope, thereby achieving the slow descent of objects or people. When the existing descender is in use, the friction block continuously generates friction, and the friction block is easily stuck in the suspension shell, which leads to the problem that the rope cannot continue to descend, affecting the use. Therefore, a descender is proposed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a descending slow device to solve the problems raised by the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a descender, including a suspension shell and a side sealing plate, the upper end of the suspension shell is an outward convex structure, the middle part of the suspension shell and the inner wall of the outward convex part are rotatably connected with a first shaft and a second shaft respectively, the outer wall of the first shaft is fixedly connected with a rope drum and a first gear, the outer wall of the second shaft is installed with a damping unit and a second gear meshing with the first gear, the lower end of the suspension shell is provided with two rope openings, the outer wall of the rope drum is slidably connected with a rope passing through the two rope openings, the damping unit includes a butterfly block fixedly installed on the outer wall of the second gear and two arc blocks, the butterfly block is provided with a guide groove penetrating into the two arc blocks to limit the sliding direction of the arc blocks. The outer arc surfaces of the two arc blocks are provided with clearance grooves, and the arc surfaces at both ends of the butterfly block are provided with placement grooves corresponding to the clearance grooves. The arc-shaped outer wall of the arc block is installed and connected with a friction plate, and an annular spring is inserted between the two placement grooves and the two clearance grooves. The friction block (arc block + friction plate) rubs against the inner wall of the outer convex part of the suspension shell under the action of centrifugal force and spring force to control the descent speed of the rope.

[0006] Preferably, the diameter of the first gear is greater than the diameter of the second gear.

[0007] Preferably, the inner walls of the two rope openings are rotatably connected with pulleys, and the two pulleys are symmetrically distributed.

[0008] Preferably, a plurality of fans are installed on the inner wall of the suspension housing, and the fans are level with the rope drum.

[0009] Preferably, a plurality of air inlets are provided on the outer wall of the suspension shell, and the air inlets correspond to the air suction end of the fan.

[0010] Preferably, a plurality of exhaust holes are provided on the top wall of the outer protrusion of the suspension shell.

[0011] Preferably, the suspension housing between the two rope openings is in a trapezoidal structure.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model arranges the damping unit separately in the outer protrusion of the suspension shell. When the rope drives the rope drum to rotate, the gear drives the damping unit to rotate. The friction block in the damping unit is supported by the centrifugal force and rubs against the inner wall of the suspension shell to reduce the speed of the rope. At the same time, the displacement position of the friction block is limited by the butterfly block sliding groove, thereby reducing the problem of the rope being unable to descend due to the friction block and the inner wall of the suspension shell being stuck, ensuring the smoothness of movement and improving the safety of use.

[0014] 2. The utility model installs a pulley at the rope opening of the suspension shell to solve the problem that the rope easily rubs against the rope opening when the descender is tilted, resulting in poor descent, thereby improving practicality.

[0015] 3. The utility model installs a fan in the suspension shell, and utilizes the fan to dissipate heat inside the suspension shell, thereby solving the heating and heat dissipation problems of the descending device and improving the safety of continuous use.

[0016] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the other side of the overall structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal first-view perspective structure of the suspension housing of the utility model;

[0020] Figure 4 It is a schematic diagram of the internal second-angle perspective structure of the suspension housing of the utility model;

[0021] Figure 5 This is a schematic diagram of the internal third-angle perspective structure of the hanging shell of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the damping unit of the utility model;

[0023] Figure 7 It is a schematic diagram of the explosion structure of the damping unit of the utility model.

[0024] In the figure: 1. suspension shell; 2. side sealing plate; 3. first shaft; 4. second shaft; 5. rope drum; 6. rope; 7. damping unit; 71. butterfly block; 72. limit arc block; 73. slide groove; 74. limit block; 75. friction block; 76. give way groove; 77. placement groove; 78. annular spring; 8. rope mouth; 9. pulley; 10. air inlet; 11. first gear; 12. second gear; 13. fan; 14. exhaust hole. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this technical field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-7 The descending slowdown device of this embodiment includes a suspension shell 1 and a side sealing plate 2. The upper end of the suspension shell 1 is a convex structure. The middle part of the suspension shell 1 and the inner wall of the convex part are rotatably connected with a first shaft 3 and a second shaft 4 respectively. The outer wall of the first shaft 3 is fixedly connected with a rope drum 5 and a first gear 11. The outer wall of the second shaft 4 is installed with a damping unit 7 and a second gear 12 meshing with the first gear 11. The lower end of the suspension shell 1 is provided with two rope openings 8. The outer wall of the rope drum 5 is slidably connected with a rope 6 passing through the two rope openings 8. The damping unit 7 includes a The butterfly block 71 and two limiting arc blocks 72, the outer arc surfaces of the two limiting arc blocks 72 are provided with clearance grooves 76, the arc surfaces at both ends of the butterfly block 71 are provided with placement grooves 77 corresponding to the clearance grooves 76, the outer wall of the butterfly block 71 is fixedly connected with two groups of limiting blocks 74, and both sides of the limiting arc block 72 are provided with sliding grooves 73 slidably connected to the outer walls of the limiting blocks 74, and the arc-shaped outer wall of the limiting arc block 72 is installed with a friction block 75, and an annular spring 78 is inserted between the two placement grooves 77 and the two clearance grooves 76, and the friction block 75 slides with the inner wall of the outer protrusion of the suspension shell 1.

[0027] like Figure 1-7As shown, the structure of the descender in the utility model is similar to the existing structure of the descender; when the utility model needs to use the rope 6 to cooperate with the descender for descending, the suspension housing 1 is hung at a fixed place, so that one end of the rope 6 is subjected to force, the rope 6 drives the rope drum 5 to rotate, and the rope drum 5 drives the first shaft 3 to rotate, and both ends of the first shaft 3 and the second shaft 4 are respectively rotated with the suspension housing 1 and the side sealing plate 2 through bearings, the first shaft 3 drives the first gear 11 to rotate, the first gear 11 drives the second shaft 4 to rotate through the transmission with the second gear 12, and the second shaft 4 drives the butterfly block 71 to rotate in the suspension housing 1, and the butterfly block 7 The two limiting arc blocks 72 are driven to rotate by the limiting block 74, and the annular spring 78 supports the two limiting arc blocks 72 by its elastic force, so that the friction block 75 contacts the inner wall of the suspension housing 1. When the two limiting arc blocks 72 rotate, the friction block 75 on the outer wall thereof is driven to rub against the inner wall of the suspension housing 1, thereby decelerating the rope drum 5, so that the rope 6 is slowly lowered. There is a certain sliding space between the slide groove 73 on the outer wall of the limiting arc block 72 and the limiting block 74, thereby reducing the problem that the rope 6 cannot be lowered due to the friction block 75 being stuck with the inner wall of the suspension housing 1, ensuring the smoothness of movement and improving the safety of use.

[0028] like Figure 3 As shown, the diameter of the first gear 11 is greater than the diameter of the second gear 12; when the rope drum 5 rotates one circle, the friction block 75 is driven to rotate multiple circles through the cooperation of the first gear 11 and the second gear 12, thereby ensuring the speed reduction effect on the rope 6.

[0029] like Figure 4 As shown, the inner walls of the two rope openings 8 are rotatably connected to pulleys 9, and the two pulleys 9 are symmetrically distributed; when the suspension housing 1 tilts, the rope 6 continues to slide along the guide of the pulley 9, reducing the friction between the rope 6 and the rope openings 8 that causes poor descent, thereby improving practicality.

[0030] like Figure 5 As shown, a plurality of fans 13 are installed on the inner wall of the suspension shell 1, and the fans 13 are level with the rope drum 5; when the fans 13 are started, the fans 13 blow wind toward the rope drum 5, and diffuse the wind into the suspension shell 1 through the rope drum 5, thereby improving the air flow in the suspension shell 1, solving the heating and heat dissipation problems of the descending device, and improving the safety of continuous use.

[0031] Among them, the fan 13 mentioned above can be purchased on the market. It is a mature technology and has been fully disclosed, so it is not repeated in the specification. The fan 13 is equipped with a power connection line or is electrically connected to a removable battery to power the fan 13.

[0032] like Figure 1 , 5As shown, the outer wall of the suspension shell 1 is provided with a plurality of air inlets 10, and the air inlets 10 correspond to the air suction end of the fan 13; when the fan 13 is working, the outside air is drawn into the suspension shell 1 through the air inlets 10 for heat dissipation, thereby improving the air circulation in the suspension shell 1 and further improving the heat dissipation effect.

[0033] like Figure 1 As shown, a plurality of exhaust holes 14 are provided on the top wall of the outer protrusion of the suspension shell 1; the exhaust holes 14 can discharge the heat gathered at the upper end of the suspension shell 1 to the outside of the suspension shell 1, thereby improving the heat dissipation effect.

[0034] like Figure 4 As shown, the suspension shell 1 between the two rope openings 8 is a trapezoidal structure; the suspension shell 1 with a trapezoidal structure located between the two rope openings 8 guides the two ends of the rope 6 passing through the rope openings 8 away from each other to avoid the two ends of the rope 6 being entangled and affecting use.

[0035] The implementation steps in this embodiment are as follows: when it is necessary to use the rope 6 to cooperate with the descender for slow descent, the suspension housing 1 is hung at a fixed place, so that one end of the rope 6 is subjected to force, the rope 6 drives the rope drum 5 to rotate, and the rope drum 5 drives the first shaft 3 to rotate. Both ends of the first shaft 3 and both ends of the second shaft 4 are respectively rotated with the suspension housing 1 and the side sealing plate 2 through bearings, the first shaft 3 drives the first gear 11 to rotate, the first gear 11 drives the second shaft 4 to rotate through the transmission with the second gear 12, and the second shaft 4 drives the butterfly block 71 to rotate in the suspension housing 1, and the butterfly block 71 is driven by the limit block 7 4 drives the two limiting arc blocks 72 to rotate, and the annular spring 78 supports the two limiting arc blocks 72 through its elastic force, so that the friction block 75 contacts the inner wall of the suspension shell 1. When the two limiting arc blocks 72 rotate, the friction block 75 on the outer wall thereof rubs against the inner wall of the suspension shell 1, thereby decelerating the rope drum 5, so that the rope 6 can be slowly lowered. At the same time, the fan 13 is started to work, and the fan 13 draws the outside air into the suspension shell 1 through the air inlet 10 for heat dissipation. The rope mouth 8 and the exhaust hole 14 both discharge the heat in the suspension shell 1, thereby improving the safety of continuous use.

[0036] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A descending device, comprising a suspension housing (1) and a side sealing plate (2), characterized in that: The upper end of the suspension housing (1) is an outward convex structure, the middle part of the suspension housing (1) and the inner wall of the outward convex part are rotatably connected to the first shaft (3) and the second shaft (4), the outer wall of the first shaft (3) is fixedly connected to the rope drum (5) and the first gear (11), the outer wall of the second shaft (4) is installed with a damping unit (7) and a second gear (12) meshingly connected with the first gear (11), the lower end of the suspension housing (1) is provided with two rope openings (8), the outer wall of the rope drum (5) is slidably connected to a rope (6) passing through the two rope openings (8), the damping unit (7) comprises a butterfly block (71) fixedly installed on the outer wall of the second gear (12) and two limit The arc block (72) comprises an arc block (72), the outer arc surfaces of the two limit arc blocks (72) are both provided with a clearance groove (76), the arc surfaces at both ends of the butterfly block (71) are both provided with a placement groove (77) corresponding to the clearance groove (76), the outer wall of the butterfly block (71) is fixedly connected with two groups of limit blocks (74), both sides of the limit arc block (72) are provided with a sliding groove (73) slidably connected to the outer wall of the limit block (74), the arc outer wall of the limit arc block (72) is installed with a friction block (75), an annular spring (78) is inserted between the two placement grooves (77) and the two clearance grooves (76), and the friction block (75) slides with the inner wall of the outer protrusion of the suspension shell (1).

2. A descending device according to claim 1, characterized in that: The diameter of the first gear (11) is greater than the diameter of the second gear (12).

3. A descending device according to claim 1, characterized in that: The inner walls of the two rope openings (8) are both rotatably connected with pulleys (9), and the two pulleys (9) are symmetrically distributed.

4. A descending device according to claim 1, characterized in that: A plurality of fans (13) are installed on the inner wall of the suspension housing (1), and the fans (13) are level with the rope drum (5).

5. A descending device according to claim 4, characterized in that: The outer wall of the suspension housing (1) is provided with a plurality of air inlets (10), and the air inlets (10) correspond to the air suction ends of the fans (13).

6. A descending device according to claim 4, characterized in that: A plurality of exhaust holes (14) are provided on the top wall of the outer convex portion of the suspension housing (1).

7. The descending device according to claim 1, characterized in that: The suspension housing (1) between the two rope openings (8) is in a trapezoidal structure.

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