Quick mounting structure for chain hoist

Abstract

The utility model relates to the technical field of hoisting hoists, and provides a quick-mounting structure for a chain hoist, which comprises a quick-mounting rod, a return sleeve, a quick-mounting cylinder and a spring clamping component, a clamping head is arranged at the top end of the quick-mounting rod, a chamfer is arranged on the top surface of the clamping head, a limit ring is arranged at the bottom end of the quick-mounting rod, and the bottom end of the quick-mounting rod is connected with the chain hoist; a chamfer is arranged on the top face of the return sleeve, the return sleeve is movably arranged on the middle section of the cylindrical face of the quick-mounting rod in a sleeving mode, and the outer size of the return sleeve is the same as the outer size of the clamping head. An opening with the same external size as the clamping head is formed in the bottom surface of the quick-mounting barrel; a quick-mounting rod and a return sleeve are assembled in the opening of the quick-mounting barrel; the spring clamping assembly is arranged on the inner wall of the opening of the quick-mounting cylinder, and the spring clamping assembly is connected with the clamping head in a clamping manner; according to the quick assembly structure for the chain hoist, the number of springs is reduced, the disassembly process is simplified through the return sleeve, and the stability of the whole structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting hoists, in particular to a quick-installation structure for manual hoists. Background Art

[0002] A manual hoist is a hand-pulled lifting equipment. Existing manual hoists often use a rotatable and fixed hook at the top to install the manual hoist. In actual operation, due to the heavy weight of the manual hoist and the flexible rotation of the hook, it is very difficult for operators to manually complete the installation and disassembly of the manual hoist when climbing high.

[0003] The utility model patent with patent number CN217972362U discloses a quick-install structure for a manual hoist, which overcomes the difficulties in the installation and disassembly process through the design of a reset spring, a lock sleeve, a locking shaft, a traction insert, a lock tongue and a lock spring. However, during the installation process, the reset spring may be compressed before the lock spring, resulting in the lock tongue being unable to work normally; at the same time, during the disassembly process, the lock spring will reset again as it is pulled apart, resulting in the disassembly process being obstructed; and the connection method between the traction insert and the lock tongue is easily damaged, resulting in the overall stability of the disassembly process being poor. Utility Model Content

[0004] The utility model aims to provide a quick-install structure for a manual hoist, which reduces the number of springs, simplifies the disassembly process through a retracting sleeve, and improves the stability of the overall structure.

[0005] The utility model provides a quick-install structure for a manual hoist, comprising:

[0006] A quick-release rod, wherein the top of the quick-release rod is provided with a clamping joint, the top edge line of the clamping joint is provided with a chamfer, the bottom cylindrical surface of the quick-release rod is provided with a limiting ring, and the bottom of the quick-release rod is connected to a manual hoist;

[0007] A retraction sleeve, wherein the top edge of the retraction sleeve is provided with a chamfer, the retraction sleeve is movably sleeved on the middle section of the cylindrical surface of the quick-release rod, and the outer dimensions of the retraction sleeve are the same as the outer dimensions of the clamping joint;

[0008] A quick-release barrel, wherein the bottom surface of the quick-release barrel is provided with an opening, and the inner dimension of the opening is the same as the outer dimension of the clamping joint, and the quick-release rod and the retraction sleeve are assembled in the opening of the quick-release barrel;

[0009] A spring clamping assembly, the spring clamping assembly is arranged on the inner wall of the quick-release barrel opening, and the spring clamping assembly clamps the clamping joint;

[0010] After the quick-release rod is engaged, the quick-release rod is pushed in again to open the spring engaging assembly again under the action of the retraction sleeve, and then the quick-release rod is pulled out to realize disassembly.

[0011] Preferably, the quick-release structure for the manual hoist also includes a pull rope, the top surface of the quick-release barrel is provided with an opening, one end of the pull rope is fixedly connected to the top surface of the clamping joint, and the other end of the pull rope passes through the opening.

[0012] Preferably, a support tube is integrally formed on the bottom surface of the retraction sleeve, the outer dimension of the support tube is smaller than the outer dimension of the clamping joint, and a chamfer is provided at the connection between the bottom surface of the retraction sleeve and the support tube.

[0013] Preferably, the cylindrical surface of the support tube is composed of a plurality of arc surfaces, and the arc surface dimensions are the same as the dimensions of the quick-release rod.

[0014] Preferably, a connecting frame is integrally formed on the top surface of the quick-release barrel, and the connecting frame is connected to the manual hoist mounting point.

[0015] Preferably, it also includes a lifting piece, a lifting threaded hole is provided at the center of the connecting frame, the lifting piece is assembled in the lifting threaded hole, and the connecting frame is connected to the manual hoist installation point through the lifting piece.

[0016] Preferably, the spring clamping assembly comprises a clamping block and a spring, an installation groove is provided on the inner wall of the quick-release barrel, the clamping block is assembled in the installation groove, and two ends of the spring respectively abut against the clamping block and the bottom surface of the installation groove.

[0017] Preferably, the number of the clamping blocks is at least 3, the clamping blocks are evenly distributed around the quick-release rod, and the clamping blocks together form an annular clamping surface.

[0018] Preferably, each of the clamping blocks is equipped with at least two corresponding springs, and the direction and the abutment surface of the springs on each clamping block are the same.

[0019] Preferably, the manual hoist quick-release structure is further provided with a positioning groove, and each spring is provided with a corresponding positioning groove, the positioning groove is arranged on the contact surface of the spring, and the spring contacts the bottom surface of the positioning groove.

[0020] In the technical solution of the utility model, when the quick-release rod is pushed in for the first time, the clamping joint opens the spring clamping assembly and forms a clamping relationship with it, and the quick-release rod and the quick-release tube are clamped by the spring clamping assembly to realize the installation process; when the quick-release rod is pushed in for the second time, the spring clamping assembly is opened by the retraction sleeve, and the retraction sleeve moves to contact the clamping joint under the action of the spring clamping assembly, ensuring that the clamping joint can pass through the spring clamping assembly, realizing the disassembly process, and the stability of the overall structure is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is an axonometric diagram of a quick-install structure for a manual hoist of the utility model in a first working state;

[0023] Figure 2 for Figure 1 Assembly drawing of quick-release rod and retraction sleeve in quick-release structure for medium manual hoist;

[0024] Figure 3 for Figure 1 Assembly drawing of quick-release cylinder and spring clamping assembly in quick-release structure for manual hoist;

[0025] Figure 4 It is an axonometric diagram of the second working state of a quick-install structure for a manual hoist of the utility model;

[0026] Figure 5 for Figure 4 A top view of the quick-release structure for a manual hoist;

[0027] Figure 6 for Figure 5 A partial enlarged view of point A in the quick-release structure for the manual hoist.

[0028] Description of reference numerals:

[0029] 1. Quick-release rod; 11. Card joint; 12. Limiting ring; 2. Retraction sleeve; 21. Support tube; 3. Quick-release tube; 31. Connecting frame; 4. Spring card assembly; 41. Card block; 42. Spring; 43. Positioning groove; 5. Pull rope; 6. Lifting parts. DETAILED DESCRIPTION

[0030] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] Combination Figures 1 to 6 As shown, a quick-loading structure for a manual hoist provided by the utility model comprises a quick-loading rod 1, a retracting sleeve 2, a quick-loading cylinder 3 and a spring clamping assembly 4.

[0034] Combination Figures 1 to 6 As shown, a clamping joint 11 is provided at the top of the quick-loading rod 1, and the top surface edge line of the clamping joint 11 is chamfered, a limiting ring 12 is provided on the cylindrical surface of the bottom end of the quick-loading rod 1, and the bottom end of the quick-loading rod 1 is connected to a manual hoist; the top surface edge line of the retraction sleeve 2 is chamfered, the retraction sleeve 2 is movably sleeved on the middle section of the cylindrical surface of the quick-loading rod 1, and the outer dimension of the retraction sleeve 2 is the same as the outer dimension of the clamping joint 11; an opening is provided on the bottom surface of the quick-loading cylinder 3, and the inner dimension of the opening is the same as the outer dimension of the clamping joint 11, and the quick-loading rod 1 and the retraction sleeve 2 are assembled in the opening of the quick-loading cylinder 3; the spring clamping assembly 4 is provided on the inner wall of the opening of the quick-loading cylinder 3, and the spring clamping assembly 4 clamps the clamping joint 11; after the quick-loading rod 1 is clamped, the quick-loading rod 1 is pushed in again to make the spring clamping assembly 4 open again under the action of the retraction sleeve 2, and then the quick-loading rod 1 is pulled out to realize disassembly.

[0035] In the present embodiment, when the quick-release rod 1 is pushed in for the first time in the technical scheme of the utility model, the clamping joint 11 opens the spring clamping assembly 4 and forms a clamping relationship therewith, and the quick-release rod 1 and the quick-release cylinder 3 are clamped by the spring clamping assembly 4 to realize the installation process; when the quick-release rod 1 is pushed in for the second time, the spring clamping assembly 4 is opened by the retraction sleeve 2, and the retraction sleeve 2 moves to contact the clamping joint 11 under the action of the spring clamping assembly 4, ensuring that the clamping joint 11 can pass through the spring clamping assembly 4, realizing the disassembly process, and the stability of the overall structure is higher.

[0036] In this embodiment, the height of the retraction sleeve 2 is less than the cylindrical length of the quick-release rod 1. The remaining length of the quick-release rod 1 excluding the quick-release head 11 and the limiting ring 12 minus the height of the retraction sleeve 2 is at least greater than the height of the spring clamping assembly 4, which facilitates the clamping process and avoids the overall stability being affected by the inadequate clamping due to space problems.

[0037] In this embodiment, the shapes of the quick-release rod 1 and the quick-release cylinder 3 can be non-cylindrical. When the shape is cylindrical, the quick-release rod 1 and the quick-release cylinder 3 can rotate relative to each other, so that the manual hoist can rotate after installation; when the shape is non-cylindrical, the quick-release rod 1 and the quick-release cylinder 3 cannot rotate relative to each other, and the manual hoist has a better fixing effect after installation.

[0038] In some embodiments, in combination Figure 1 As shown, the manual hoist quick-loading structure also includes a pull rope 5. The top surface of the quick-loading cylinder 3 is provided with an opening. One end of the pull rope 5 is fixedly connected to the top surface of the clamping joint 11, and the other end of the pull rope 5 passes through the opening. The design of the pull rope 5 allows the operator to only need to complete the installation of the quick-loading cylinder 3 during the climbing process. The installation and disassembly processes of the quick-loading rod 1 and the quick-loading cylinder 3 can be achieved on the ground by pulling the pull rope 5, which greatly reduces the difficulty of installation and disassembly.

[0039] In some embodiments, in combination Figure 2 As shown, the bottom surface of the retracting sleeve 2 is also integrally formed with a support tube 21, the outer dimension of the support tube 21 is smaller than the outer dimension of the clamping joint 11, and a chamfer is provided at the connection between the bottom surface of the retracting sleeve 2 and the support tube 21.

[0040] In this embodiment, after the support tube 21 is designed on the retraction sleeve 2, pushing the quick-release rod 1 in again will form a clamping relationship between the retraction sleeve 2 and the spring clamping assembly 4, increasing the force of the spring clamping assembly 4 on the retraction sleeve 2, ensuring that the retraction sleeve 2 can move to abut against the clamping joint 11. At the same time, a chamfer is provided at the connection between the bottom surface of the retraction sleeve 2 and the support tube 21 to ensure that the clamping relationship can be released by external force, thereby increasing the stability of the disassembly action.

[0041] In some embodiments, in combination Figure 2 , Figure 5As shown, the cylindrical surface of the support tube 21 is composed of multiple arc surfaces, and the arc surface outer dimensions of the arc surface are the same as the outer dimensions of the quick-release rod 1. Since the head outer dimensions of the clamping block 41 are the same as the outer dimensions of the quick-release rod 1, and the size of the support tube 21 is larger than that of the quick-release rod 1, when the clamping block 41 contacts the support tube 21, the circular arc surfaces of the heads of the multiple clamping blocks 41 do not overlap. The flower-like cylindrical surface composed of multiple arc surfaces can make the contact between the support tube 21 and the clamping block 41 tighter, and solve the problem of concentrated friction in the links.

[0042] In some embodiments, in combination Figure 3 As shown, the top surface of the quick-loading barrel 3 is integrally formed with a connecting frame 31, and the connecting frame 31 is connected to the manual hoist mounting point. The function of the connecting frame 31 is a connecting transition piece connecting the quick-loading barrel 3 and the manual hoist mounting point, which reduces the influence of the connection design on the appearance of the quick-loading barrel 3. The design of the quick-loading barrel 3 ensures uniformity in the hand while providing sufficient space for the pull rope 5 on the top surface of the quick-loading barrel 3.

[0043] In some embodiments, in combination Figure 1 , Figure 3 As shown, it also includes a hanging part 6, and a hanging threaded hole is provided in the center of the connecting frame 31. The hanging part 6 is assembled in the hanging threaded hole. The connecting frame 31 is connected to the manual hoist mounting point through the hanging part 6. The hanging part 6 is a connecting part connecting the quick-loading cylinder 3 and the manual hoist mounting point. The hanging part 6 can be a hook or a bolt. The hanging part 6 is preferably connected to the quick-loading cylinder 3 and the manual hoist mounting point in a fixed connection manner, because the fixed quick-loading cylinder 3 is more conducive to the connection with the quick-loading rod 1.

[0044] In some embodiments, in combination Figure 6 As shown, the spring clamping assembly 4 includes a clamping block 41 and a spring 42. A mounting groove is provided on the inner wall of the quick-loading barrel 3. The clamping block 41 is assembled in the mounting groove. The two ends of the spring 42 respectively abut against the clamping block 41 and the bottom surface of the mounting groove. The spring clamping assembly 4 is responsible for clamping the quick-loading rod 1 and the quick-loading barrel 3. The spring 42 can enable the clamping block 41 to automatically reset.

[0045] In some embodiments, in combination Figure 5 , Figure 6 As shown, the number of the clamping blocks 41 is at least 3, and the clamping blocks 41 are evenly distributed around the quick-release rod 1, and the clamping blocks 41 together form an annular clamping surface. The clamping blocks 41 that together form the annular clamping surface are more evenly stressed, so that the clamping effect is better. To ensure that the annular clamping surface is formed, the number of the clamping blocks 41 should be at least 2. However, when the number of the clamping blocks 41 is 2, the clamping blocks 41 cannot realize the opening and closing process through the chamfered inclined surface, so the number of the clamping blocks 41 is at least 3.

[0046] In some embodiments, in combination Figure 5 , Figure 6 As shown, each of the blocks 41 is equipped with at least two corresponding springs 42, and the direction and the contact surface of the spring 42 on each block 41 are the same. By providing a force to one block 41 through at least two springs 42, the stability of the force can be improved, and the stability of the movement of the block 41 can be improved.

[0047] In some embodiments, in combination Figure 6 As shown, the manual hoist quick-release structure is also provided with a positioning groove 43, and each spring 42 is provided with a corresponding positioning groove 43. The positioning groove 43 is arranged on the contact surface of the spring 42, and the spring 42 contacts the bottom surface of the positioning groove 43. The position of the spring 42 is positioned by the positioning groove 43 to prevent the spring from sliding during use and causing position displacement and loss of function, which is beneficial to improving the stability of the movement of the block 41. At the same time, it is best to perform positioning design at both ends of the spring, and the positioning effect is best at this time.

[0048] Working process: After the quick-loading cylinder 3 is installed at the installation point of the manual hoist, the operator uses the pull rope 5 or other means to send the quick-loading rod 1 into the quick-loading cylinder 3. At this time, the retraction sleeve 2 is abutted against the limit ring 12 under the action of its own gravity, and the spring clamping assembly 4 is opened under the action of the chamfer on the clamping joint 11. After the clamping joint 11 passes through, the spring clamping assembly 4 is reset, and the spring clamping assembly 4 and the clamping joint 11 are clamped. At this time, the quick-loading rod 1 and the quick-loading cylinder 3 are connected, and the installation process is completed.

[0049] After the manual hoist is used, the operator further inserts the quick-loading rod 1 into the quick-loading cylinder 3, and the spring clamping assembly 4 opens again under the action of the chamfer of the retraction sleeve 2. After the spring clamping assembly 4 is fully opened, the operator pulls out the quick-loading rod 1 with force. At this time, under the action of the friction force provided by the spring clamping assembly 4, the retraction sleeve 2 moves along the quick-loading rod 1 to the top surface against the clamping joint 11. Since the spring clamping assembly 4 is not reset under the action of the retraction sleeve 2, the clamping joint 11 will pass through the spring clamping assembly 4, and the disassembly process is completed.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A quick-install structure for a manual hoist, characterized in that: include: A quick-release rod (1), wherein a clamping joint (11) is provided at the top end of the quick-release rod (1), a top surface edge line of the clamping joint (11) is provided with a chamfer, a limiting ring (12) is provided on the cylindrical surface at the bottom end of the quick-release rod (1), and the bottom end of the quick-release rod (1) is connected to a manual hoist; A retraction sleeve (2), wherein the top edge of the retraction sleeve (2) is provided with a chamfer, the retraction sleeve (2) is movably sleeved on the middle section of the cylindrical surface of the quick-release rod (1), and the outer dimensions of the retraction sleeve (2) are the same as the outer dimensions of the clamping joint (11); A quick-release barrel (3), wherein the bottom surface of the quick-release barrel (3) is provided with an opening, and the inner dimension of the opening is the same as the outer dimension of the clamping joint (11), and the quick-release rod (1) and the retraction sleeve (2) are assembled in the opening of the quick-release barrel (3); A spring clamping assembly (4), the spring clamping assembly (4) being arranged on the inner wall of the opening of the quick-release barrel (3), and the spring clamping assembly (4) being clamped to the clamping joint (11); After the quick-release rod (1) is locked, the quick-release rod (1) is pushed in again to open the spring locking assembly (4) again under the action of the retraction sleeve (2), and then the quick-release rod (1) is pulled out to realize disassembly.

2. The quick-install structure for a manual hoist according to claim 1, characterized in that: It also includes a drawstring (5), the top surface of the quick-release barrel (3) is provided with an opening, one end of the drawstring (5) is fixedly connected to the top surface of the clamping joint (11), and the other end of the drawstring (5) passes through the opening.

3. The quick-install structure for a manual hoist according to claim 1, characterized in that: The bottom surface of the retracting sleeve (2) is also integrally formed with a support tube (21), the outer dimensions of the support tube (21) are smaller than the outer dimensions of the clamping joint (11), and a chamfer is provided at the connection between the bottom surface of the retracting sleeve (2) and the support tube (21).

4. The quick-install structure for a manual hoist according to claim 3, characterized in that: The cylindrical surface of the support tube (21) is composed of a plurality of arc surfaces, and the arc surface dimensions are the same as the dimensions of the quick-release rod (1).

5. The quick-install structure for a manual hoist according to claim 1, characterized in that: The top surface of the quick-release cylinder (3) is integrally formed with a connecting frame (31), and the connecting frame (31) is connected to the manual hoist installation point.

6. The quick-install structure for a manual hoist according to claim 5, characterized in that: It also comprises a hanging piece (6), a hanging threaded hole is provided at the center of the connecting frame (31), the hanging piece (6) is assembled in the hanging threaded hole, and the connecting frame (31) is connected to the manual hoist installation point through the hanging piece (6).

7. The quick-install structure for a manual hoist according to claim 1, characterized in that: The spring clamping assembly (4) comprises a clamping block (41) and a spring (42); a mounting groove is provided on the inner wall of the quick-release barrel (3); the clamping block (41) is mounted in the mounting groove; and two ends of the spring (42) respectively contact the clamping block (41) and the bottom surface of the mounting groove.

8. The quick-install structure for a manual hoist according to claim 7, characterized in that: The number of the clamping blocks (41) is at least 3, the clamping blocks (41) are evenly distributed around the quick-release rod (1), and the clamping blocks (41) together form an annular clamping surface.

9. The quick-install structure for a manual hoist according to claim 7, characterized in that: Each of the clamping blocks (41) is equipped with at least two corresponding springs (42), and the direction and the contact surface of the springs (42) on each clamping block (41) are the same.

10. The quick-install structure for a manual hoist according to claim 7, characterized in that: A positioning groove (43) is also provided, and each spring (42) is provided with a corresponding positioning groove (43). The positioning groove (43) is arranged on the contact surface of the spring (42), and the spring (42) contacts the bottom surface of the positioning groove (43).

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