Rope pressing device, descender comprising rope pressing device and electric lifter comprising rope pressing device

Abstract

The utility model discloses a rope pressing device and a descender and an electric lifter comprising the same, the rope pressing device comprises a body, one side of the body is provided with a hanging hole, and the body is provided with a plurality of through limiting grooves; a one-way rope wheel capable of rotating in a one-way mode is installed in the middle of the body, a rope pressing mechanism is arranged on one side of the one-way rope wheel, a handle is arranged on one side of the body, and the handle can be pulled to drive the rope pressing mechanism to slide in the limiting groove so as to change the distance between the rope pressing mechanism and the one-way rope wheel to release or clamp a rope in the rope pressing mechanism. The rope pressing mechanism can be used for a manual descender and also can be used as an electric lifter, the implementation scheme is simple, few parts are used, the production cost is low, the rope pressing mechanism provided by the scheme can be used for pressing a rope more safely and reliably in the descender or the electric lifter, the rope is prevented from being disengaged or loosened, and the rope pressing mechanism is suitable for being used in the descender or the electric lifter. And a more labor-saving and efficient high-altitude operation device is provided for the high-altitude hoisting industry.

Description

Technical Field

[0001] This utility model relates to the field of rope hoisting for high-altitude operations, specifically a rope clamping device and a descender and electric lift device including the device. Background Technology

[0002] Existing patents for lifting devices (or multi-functional pulley devices) or lowering devices have been found to have the following drawbacks in practice: they have multiple small pressure rollers, resulting in a short service life and high maintenance costs; they require a panel to limit the rope, and both the gearbox cover and the main body are needed; the handle needs to be turned quickly, resulting in a heavy product and high manufacturing costs. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides the following technical solution: a rope clamping device, comprising a body, a hanging hole on one side of the body, and multiple through-type limiting grooves on the body; a unidirectional rope wheel capable of unidirectional rotation is installed in the middle of the body, and a rope clamping mechanism is provided on one side of the unidirectional rope wheel. The rope clamping mechanism includes a clamping bracket movable relative to the body, a limiting shaft connected to the rear end of the clamping bracket, and the rear end of the limiting shaft located within the limiting groove. A handle is provided on one side of the body, and the handle is rotatably hinged to the body. One end of the handle abuts against and drives the limiting shaft. Moving the handle can drive the rope clamping mechanism to slide within the limiting groove to change the distance between the rope clamping mechanism and the unidirectional rope wheel to release or clamp the rope therein.

[0004] As an improvement to the rope clamping device of this utility model, the hanging hole includes a universal joint hanging ring that is hinged to the body.

[0005] As an improvement of the rope clamping device of this utility model, the clamping bracket includes a front side plate and a rear side plate, wherein the front side plate is fixedly connected to the rear side plate through a limiting shaft.

[0006] As an improvement to the rope clamping device of this utility model, the rope clamping mechanism is hinged to the main body via a swing arm.

[0007] As an improvement to the rope clamping device of this utility model, a handle torsion spring is installed at one end of the handle.

[0008] As an improvement of the rope clamping device of this utility model, there are three limiting shafts. The front ends of the limiting shafts are connected to the front side plate and the rear side plate respectively. The rear ends of the three limiting shafts are respectively set in the corresponding limiting grooves. One of the limiting shafts is provided with a drive end that abuts against the handle.

[0009] As an improvement to the rope clamping device of this utility model, the rear end of the limiting shaft is provided with an anti-detachment outer protrusion, and the limiting groove is provided with a matching step.

[0010] As an improvement to the rope clamping device of this utility model, the inner side of the one-way rope wheel is provided with opposing concave and convex patterns.

[0011] A descender including the rope clamping device, comprising the aforementioned rope clamping device, wherein the inner side of the one-way rope pulley is provided with an inwardly recessed mounting groove, the side wall of the mounting groove is provided with a locking tooth, and an anti-reverse ratchet is provided in the mounting groove, one end of the anti-reverse ratchet abutting against the locking tooth, and the other end of the anti-reverse ratchet abutting against a spring.

[0012] An electric lift including the rope clamping device comprises the aforementioned rope clamping device. A gearbox is mounted on one side of the main body, and a gear assembly is installed inside the gearbox. The gear assembly includes a drill coupling input shaft, one end of which is provided with a drill coupling port. An input gear is coaxially connected to the drill coupling input shaft. A first gear meshes with one side of the input gear. A second gear is coaxially connected to the first gear and fixed in one direction therewith. An output gear meshes with one side of the second gear. A one-way ratchet is provided on one side of the output gear, and the one-way ratchet is abutted by a spring. The output gear is driven by an output shaft, which extends to one side of the main body and is connected to a one-way rope pulley. A centrifugal throwing block and a cooperating throwing block sleeve are provided at one end of the output shaft. A rope clamping mechanism has a first rope clamping wheel and a second rope clamping wheel mounted at both ends, and the first rope clamping wheel and the second rope clamping wheel are rotatably connected to a limiting shaft.

[0013] Compared with the prior art, this application has the following beneficial effects:

[0014] This utility model belongs to the field of aerial work rope hoisting. It proposes a rope clamping mechanism that can be used as both a manual descender and an electric hoist. The implementation scheme is simple, uses fewer parts, and has low production costs. Using the rope clamping mechanism provided by this solution, the rope can be clamped more safely and reliably in both the descender and the electric hoist, preventing the rope from coming off or loosening. This provides the aerial work industry with a more reliable, safer, more labor-saving, and more efficient aerial work equipment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the descender's structure;

[0017] Figure 2 This is a schematic diagram of the rope clamping device.

[0018] Figure 3 This is a schematic diagram of the decomposed structure of the descender;

[0019] Figure 4 This is a schematic diagram of the descender connected to the rope.

[0020] Figure 5 This is a schematic diagram of the electric lift device;

[0021] Figure 6 This is a schematic diagram of the disassembled structure of the electric lift device;

[0022] Figure 7 A schematic diagram of the installation of the rope clamping device, gear assembly, and body. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 As shown, this utility model provides a first embodiment of a descender, including a body 1. A hanging hole 2 is provided on one side of the body 1, and multiple through-type limiting grooves 10 are provided on the body 1. A unidirectional rope pulley 3 capable of unidirectional rotation is installed in the middle of the body 1. A rope clamping mechanism 4 is provided on one side of the unidirectional rope pulley 3. The rope clamping mechanism 4 includes a front side plate 41 and a rear side plate 42. The front side plate 41 is fixedly connected to the rear side plate 42 via multiple limiting shafts 43. The rear ends of the multiple limiting shafts 43 are installed in the limiting grooves 10. The rope clamping mechanism 4 is hinged to the body 1 via a swing arm 44. A handle 5 is provided on one side of the body 1, and the handle 5 is rotatably hinged to the body 1. A handle torsion spring 51 is installed at one end of the handle 5. One end of the handle 5 abuts against and drives the limiting shaft 43. Moving the handle 5 can drive the rope clamping mechanism 4 to slide within the limiting grooves 10 to change the distance between the rope clamping mechanism 4 and the unidirectional rope pulley 3, thereby releasing or clamping the rope therein.

[0025] In this first embodiment, the hanging hole 2 adopts a universal joint hanging ring that is hinged to the body.

[0026] The rope clamping mechanism 4 is equipped with a rope clamping wheel 45 and a rope clamping wheel 46 at both ends, which are rotatably connected to multiple limit shafts 43.

[0027] In this first embodiment, the second rope pressing wheel 46 is a bearing installed on the limiting shaft 43.

[0028] In this first embodiment, there are three limiting shafts 43. The front ends of the limiting shafts 43 are connected to the front side plate and the rear side plate respectively. The rear ends of the three limiting shafts 43 are respectively set in the corresponding limiting grooves 10. One of the limiting shafts 43 is provided with a drive end 431 that abuts against the handle.

[0029] The rear end of the limiting shaft 43 is provided with an anti-detachment outer protrusion 430, and the limiting groove 10 is provided with a matching step.

[0030] The inner side of the one-way pulley 3 is provided with opposing concave and convex patterns, which further increases the friction with the rope and improves the safety factor of the descender.

[0031] The inner side of the one-way pulley 3 is provided with an inwardly recessed mounting groove. The side wall of the mounting groove is provided with a locking tooth 31. An anti-reverse ratchet 32 ​​is provided in the mounting groove. One end of the anti-reverse ratchet 32 ​​abuts against the locking tooth, and the other end of the anti-reverse ratchet 32 ​​abuts against a spring. Through this anti-reverse structure design, the one-way pulley can only rotate in one direction, so that the rope can be locked when suspending heavy objects, and the slack end of the rope can work as a pulley.

[0032] Working principle: When working at height, the operator uses the buckle to hook the safety belt into the hook hole 2. In the initial state, under the action of the handle torsion spring 51, the handle is generally in the following position. Figure 1 The clamping state shown indicates that the rope is compressed between the pressure pulley 46 and the one-way pulley 3. For slow descent, press as shown... Figure 4 As shown, when the handle 5 is turned counterclockwise to a certain angle, during the initial part of this rotation, since the upper end of the handle 5 is tangent to the driving end 431 of the limit shaft 43, the two do not move. This free-spinning angle of the handle is a safety buffer angle. When the operator turns the handle, it gives the operator a psychological transition range before descent, avoiding an acute fall caused by slight rotation, which could lead to panic and accidents. After this free-spinning angle a is completed ( Figure 4 As shown), when the handle is continued to be turned, one end of the handle 5 begins to press against the drive end 431, causing the rope clamping mechanism 4 to swing at a certain angle. Multiple limit shafts 43 will move synchronously within the limit groove 10, thereby increasing the distance between the rope clamping wheel 46 and the one-way rope wheel 3, switching the rope from the clamped state to the released state. The operator begins to descend and can manually control the angle of the handle to flexibly control the descent speed. When it is necessary to slow down the descent speed, the rotation angle is reduced, and when it is necessary to speed up the descent speed, the rotation angle is increased.

[0033] Example 2 is an electric lift that includes the rope clamping device, such as Figures 5-7As shown, the rope clamping device includes the above-described structure and also includes a gearbox 6 installed on one side of the main body. A gear assembly 7 is installed inside the gearbox 6. The gear assembly 7 includes a drill input shaft 71 with a drill connection port 72 at one end. An input gear 73 is coaxially connected to the drill input shaft 71. A first gear 74 meshes with one side of the input gear 73. A second gear 75, unidirectionally fixed to the first gear 74, is coaxially connected to the first gear 74. An output gear 76 meshes with one side of the second gear 75, and a unidirectional ratchet is provided on one side of the output gear 76. 80. The one-way ratchet 80 is abutted by the spring 81. The output gear 76 is connected to an output shaft 77, which extends to one side of the main body and connects to the one-way pulley 3. One end of the output shaft 77 is equipped with a centrifugal throwing block and a matching throwing block sleeve 78. When it is necessary to rise, the operator inserts the drill bit into the drill connector 72. In sequence, the drill output force is transmitted through the input gear 73, the first gear 74, the second gear 75, the output gear 76, and the output shaft 77 to the one-way pulley 3. The rotation of the one-way pulley 3 will drive the electric lift and the operator to rise together. When it is necessary to descend, the handle 5 is turned in the same way, which will increase the distance between the rope clamping wheel 46 and the one-way pulley 3, switching the rope from a clamped state to a released state, making it easier for the operator to descend. When spring 81 breaks or ratchet 80 is worn excessively, ratchet 80 will be unable to engage output gear 76, and the one-way pulley will rotate in the opposite direction, resulting in a rapid fall. As the centrifugal block is thrown out, it gets stuck in the outer sleeve 78 of the block that it cooperates with, quickly locking the one-way pulley and preventing a rapid fall accident.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rope clamping device, comprising a body (1), wherein a hanging hole (2) is provided on one side of the body (1), characterized in that, The main body (1) is provided with multiple through-slots (10). A one-way rope wheel (3) capable of unidirectional rotation is installed in the middle of the main body (1). A rope clamping mechanism (4) is provided on one side of the one-way rope wheel (3). The rope clamping mechanism (4) includes a clamping bracket that can move relative to the main body. A limit shaft (43) is connected to the rear end of the clamping bracket. The rear end of the limit shaft (43) is located in the limit slot (10). A handle (5) is provided on one side of the main body. The handle (5) is rotatably hinged to the main body (1). One end of the handle (5) abuts against the limit shaft (43). By moving the handle (5), the rope clamping mechanism (4) can be driven to slide in the limit slot to change the distance between the rope clamping mechanism (4) and the one-way rope wheel (3) to release or clamp the rope therein.

2. The rope clamping device according to claim 1, characterized in that, The hanging hole (2) includes a universal joint hanging ring that is hinged to the body.

3. The rope clamping device according to claim 1, characterized in that, The clamping bracket includes a front side plate (41) and a rear side plate (42), wherein the front side plate (41) is fixedly connected to the rear side plate (42) via a limiting shaft (43).

4. The rope clamping device according to claim 1, characterized in that, The rope clamping mechanism (4) is hinged to the body via a swing arm (44).

5. The rope clamping device according to claim 1, characterized in that, A handle torsion spring (51) is installed at one end of the handle (5).

6. The rope clamping device according to claim 3, characterized in that, There are three limiting shafts (43). The front ends of the limiting shafts (43) are connected to the front side plate and the rear side plate respectively. The rear ends of the three limiting shafts (43) are respectively set in the corresponding limiting grooves (10). One of the limiting shafts (43) is provided with a drive end (431) that abuts against the handle.

7. The rope clamping device according to claim 1, characterized in that, The rear end of the limiting shaft (43) is provided with an anti-detachment outer protrusion (430), and the limiting groove (10) is provided with a matching step.

8. The rope clamping device according to claim 1, characterized in that, The inner side of the one-way pulley (3) is provided with opposing concave and convex patterns.

9. A descender including the rope clamping device, characterized in that, The device includes the rope clamping device according to claims 1-8, wherein the inner side of the one-way rope pulley (3) is provided with an inwardly recessed mounting groove, the side wall of the mounting groove is provided with a locking tooth (31), and an anti-reverse ratchet (32) is provided in the mounting groove, one end of the anti-reverse ratchet (32) abuts against the locking tooth, and the other end of the anti-reverse ratchet (32) abuts against a spring.

10. An electric lift including the rope clamping device, characterized in that, The device includes the rope clamping device as described in claims 1-8, wherein a gearbox (6) is installed on one side of the main body, and a gear assembly (7) is installed inside the gearbox (6). The gear assembly (7) includes a drill coupling input shaft (71), one end of which is provided with a drill coupling port (72). An input gear (73) is coaxially connected to the drill coupling input shaft (71), and a first gear (74) meshes with one side of the input gear (73). A second gear (75) is coaxially connected to the first gear (74) and fixed in one direction therewith. The second gear (75) meshes with one side of the first gear (74). There is an output gear (76), and a one-way ratchet (80) is provided on one side of the output gear (76). The one-way ratchet (80) is abutted by a spring (81). The output gear (76) is connected to an output shaft (77). The output shaft (77) extends to one side of the body and is connected to a one-way rope wheel (3). One end of the output shaft (77) is provided with a centrifugal throwing block and a throwing block sleeve (78) that cooperates with it. The rope pressing mechanism (4) is equipped with a rope pressing wheel one (45) and a rope pressing wheel two (46) at both ends. The rope pressing wheel one (45) and the rope pressing wheel two (46) are rotatably connected to a limiting shaft (43).

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