Counterweight mounting structure of elevator and elevator

Abstract

The counterweight mounting structure of the elevator comprises a rack, a counterweight mounting structure, a counterweight mounting structure and a counterweight mounting structure, and the rack is provided with a guide rail which is perpendicular to the ground and extends upwards; the counter weight is connected with a guide matching piece, and the guide matching piece is in sliding connection with the guide rail so as to guide vertical lifting of the counter weight; the transmission assembly comprises a fixed pulley, a steel wire rope and a movable pulley, the fixed pulley is installed on the top of the rack, the movable pulley is installed on the top of the balance weight, the steel wire rope comprises a first end and a second end, the first end is used for being connected with the material frame, and the second end sequentially bypasses the fixed pulley and the movable pulley and then is fixed to the rack. According to the scheme, the arrangement of the movable pulley is equivalent to the addition of a connecting point of a steel wire rope on the counterweight, namely, a traditional hoisting mode of one steel wire rope is optimized into a hoisting mode of two steel wire ropes, so that the stability of the process of pulling the counterweight to lift by the steel wire ropes is effectively improved. According to the scheme, a guide rail is further arranged on the rack, the stability of the balance weight in the lifting process is further improved, and shaking of the balance weight in the lifting process is effectively relieved.

Description

Technical Field

[0001] This application relates to the technical field of goods transfer equipment, and particularly to a counterweight installation structure and a hoist for a hoist. Background Art

[0002] Some existing heavy object hoists are equipped with counterweights. The use of counterweights can reduce the load on the motor, reduce energy consumption, and improve the working efficiency of the hoist. During the operation of the hoist, a moment balance is formed between the counterweight and the load of the hoist, so that the motor does not need to excessively adjust the moment to maintain the balance state. The transmission structure between the counterweight and the material rack of the existing hoist includes a fixed pulley and a steel wire rope. The fixed pulley is fixed on the top of the hoist, one end of the steel wire rope is connected to the counterweight, and the other end is connected to the material rack after passing around the fixed pulley. The existing hoist has defects: the stability of the counterweight during lifting is poor, and it is easy to cause problems of collision with the frame of the hoist due to shaking. Utility Model Content

[0003] The purpose of the embodiments of the present utility model is to provide a counterweight installation structure and a hoist for a hoist, which can solve the above problems existing in the prior art.

[0004] To achieve the above object, the present application adopts the following technical solutions:

[0005] On the one hand, a counterweight installation structure for a hoist is provided, including:

[0006] A frame provided with a guide rail extending vertically upward from the ground;

[0007] A counterweight connected with a guiding and cooperating member, and the guiding and cooperating member is slidably connected with the guide rail to guide the vertical lifting of the counterweight;

[0008] A transmission assembly including a fixed pulley, a steel wire rope and a movable pulley. The fixed pulley is installed on the top of the frame, the movable pulley is installed on the top of the counterweight. The steel wire rope includes a first end and a second end. The first end is used to be connected with a material rack, and the second end is fixed on the frame after passing around the fixed pulley and the movable pulley in sequence.

[0009] Optionally, the frame is in a cylindrical structure extending vertically upward from the ground, and an ascending and descending cavity is formed inside it. The counterweight is installed in the ascending and descending cavity, and the guide rail is arranged in the ascending and descending cavity to be cooperatively connected with the guiding and cooperating member on the counterweight.

[0010] Optionally, the guiding and cooperating member includes a roller bracket and a roller. The roller bracket is fixed on the counterweight, the roller is rotatably installed on the roller bracket, and the roller is slidably connected with the guide rail to realize the guiding of the counterweight during the ascending and descending process.

[0011] Optionally, the guide rail is formed on the inner wall of the frame, and the guide fitting includes at least three guide fittings uniformly arranged around the counterweight.

[0012] Optionally, a group of the guide fittings are respectively installed on the top and bottom of the counterweight, and each group of the guide fittings has at least three and are evenly arranged around the circumference of the counterweight.

[0013] Optionally, each group of guide fittings has four members.

[0014] Optionally, a long positioning hole is provided on the roller bracket, and a threaded member passes through the long positioning hole to fix the roller bracket on the counterweight; and by loosening the threaded member, the relative position of the roller bracket and the threaded member can be adjusted along the long positioning hole to adjust the distance between the roller and the guide rail.

[0015] Optionally, a rope fixing rod is fixedly provided inside the frame and crosses the lifting cavity, and the second end portion is fixed on the rope fixing rod.

[0016] Optionally, two steel wire ropes are arranged side by side, and the movable pulley and the fixed pulley have two wheel grooves respectively.

[0017] On the other hand, a hoist is provided, comprising a material rack, a driving mechanism and the above-mentioned counterweight installation structure, wherein the material rack is slidably installed on one side of the rack, the driving mechanism is transmission-connected to the material rack, and the material rack is driven to rise and fall by the driving mechanism.

[0018] The beneficial effects of the present application are as follows: the utility model provides a counterweight installation structure and a hoist for a hoist, a movable pulley is arranged on the top of the counterweight, the first end of the wire rope is fixed to the material rack, and the second end is fixed to the rack after passing through the fixed pulley on the top of the rack and the movable pulley on the top of the counterweight in sequence. Compared with the traditional solution of directly fixing the wire rope to the counterweight, the setting of the movable pulley in this solution is equivalent to adding a connection point of the wire rope to the counterweight, that is, the traditional hoisting of one strand of wire rope is optimized to provide a hoisting method of two strands of wire rope, thereby effectively improving the stability of the lifting process of the counterweight pulled by the wire rope. In addition, the present solution also arranges a guide rail on the rack, and a guide fitting that is slidably connected to the guide rail is arranged on the counterweight, which can play a guiding role when the counterweight is lifted and lowered, further improving the stability of the lifting process of the counterweight, and effectively reducing the shaking of the lifting process of the counterweight. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present application is further described in detail below based on the drawings and embodiments.

[0020] Figure 1Schematic structural diagram of the counterweight installation structure of the hoist according to the embodiment of the present application;

[0021] Figure 2 Schematic structural diagram of the connection between the counterweight and the transmission assembly according to the embodiment of the present application;

[0022] Figure 3 is Figure 2 enlarged view of a partial structure in

[0023] Figure 4 Cross-sectional view of the horizontal section of the frame according to the embodiment of the present application;

[0024] Figure 5 Schematic structural diagram of the hoist according to the embodiment of the present application.

[0025] In the figure:

[0026] 1. Frame; 11. Guide rail; 12. Lifting cavity; 2. Transmission assembly; 21. Fixed pulley; 22. Steel wire rope; 23. Movable pulley; 3. Counterweight; 4. Guide fitting; 41. Roller bracket; 411. Positioning long hole; 42. Roller; 5. Material rack; 6. Driving mechanism; 61. Motor; 62. Transmission mechanism. Detailed implementation manners

[0027] To make the technical problems solved by the present application, the technical solutions adopted, and the achieved technical effects clearer, the technical solutions of the embodiments of the present application will be further described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0028] In the description of the present application, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0030] Some existing heavy object lifters are equipped with counterweights. The use of counterweights can reduce the load on the motor, reduce energy consumption, and improve the working efficiency of the lifter. During the operation of the lifter, a moment balance is formed between the counterweight and the load of the lifter, so that the motor does not need to excessively adjust the moment to maintain the balanced state. The transmission structure between the counterweight and the material rack of the existing lifter includes a fixed pulley and a steel wire rope. The fixed pulley is fixed to the top of the lifter, one end of the steel wire rope is connected to the counterweight, and the other end passes around the fixed pulley and is then connected to the material rack. The existing hoist has defects: the stability of the counterweight during lifting is poor, and it is easy to cause problems of hitting the frame of the lifter due to shaking.

[0031] To overcome the above technical problems, referring to Figures 1-4 , this embodiment provides a counterweight installation structure for a hoist, including a frame 1, a counterweight 3, and a transmission assembly 2. A guide rail 11 extending vertically upward from the ground is provided on the frame 1; a guide fitting 4 is connected to the counterweight 3, and the guide fitting 4 is slidably connected to the guide rail 11 to guide the vertical lifting of the counterweight 3; the transmission assembly 2 includes a fixed pulley 21, a steel wire rope 22, and a movable pulley 23. The fixed pulley 21 is installed on the top of the frame 1, the movable pulley 23 is installed on the top of the counterweight 3, the steel wire rope 22 includes a first end and a second end, the first end is used to connect to a material rack 5, and the second end is fixed to the frame 1 after passing around the fixed pulley 21 and the movable pulley 23 in sequence.

[0032] Based on the counterweight installation structure of the hoist in this embodiment, a movable pulley 23 is provided at the top of the counterweight 3. The first end of the steel wire rope 22 is fixed to the material rack 5, and the second end sequentially bypasses the fixed pulley 21 at the top of the rack 1 and the movable pulley 23 at the top of the counterweight 3 and then is fixed to the rack 1. Compared with the traditional solution of directly fixing the steel wire rope 22 to the counterweight 3, the setting of the movable pulley 23 in this solution is equivalent to adding a connection point of the steel wire rope 22 to the counterweight 3, that is, the hoisting method is optimized from the traditional single-strand steel wire rope 22 hoisting to double-strand steel wire ropes 22 for hoisting. This structure disperses the pulling force on the counterweight 3, making the counterweight 3 more evenly stressed during the lifting and lowering process, thus effectively improving the stability of the steel wire rope 22 pulling the counterweight 3 up and down. In addition, a guide rail 11 is also provided on the rack 1, and a guide fitting 4 slidably connected to the guide rail 11 is provided on the counterweight 3, which can play a guiding role when the counterweight 3 is lifted and lowered, further improving the stability of the counterweight 3 during the lifting and lowering process and effectively reducing the sway of the counterweight 3 during the lifting and lowering process.

[0033] In one embodiment, in combination with Figure 1 and Figure 4 , the rack 1 has a cylindrical structure extending vertically upward from the ground, and an elevating cavity 12 is formed inside it. The counterweight 3 is installed in the elevating cavity 12, and the guide rail 11 is arranged in the elevating cavity 12 to be cooperatively connected with the guide fitting 4 on the counterweight 3.

[0034] The elevating cavity 12 formed inside the cylindrical rack 1 provides a closed elevating space in which the counterweight 3 is installed, which can further improve the stability and reliability of the counterweight 3 during the lifting and lowering process. At the same time, it is convenient to set the guide rail 11. At the same time, it can reduce the influence and damage of external environmental factors on the internal mechanism of the elevating cavity 12. Specifically, the rack 1 can be set into a square cylinder, a cylindrical cylinder or a cylinder of other shapes according to actual requirements.

[0035] In one embodiment, the guide fitting 4 includes a roller bracket 41 and a roller 42. The roller bracket 41 is fixed to the counterweight 3, the roller 42 is rotatably installed on the roller bracket 41, and the roller 42 is slidably connected to the guide rail 11 to realize the guiding of the counterweight 3 during the lifting and lowering process.

[0036] The roller bracket 41 is fixed to the counterweight 3, providing stable support for the roller 42. The contact between the roller 42 and the guide rail 11 is rolling friction. Compared with sliding friction, the resistance of rolling friction is smaller, which can significantly reduce the friction and wear of the counterweight 3 during the lifting and lowering process. This not only prolongs the service life of the roller 42, the guide rail 11 and the counterweight 3, but also reduces the heat and noise generated by friction.

[0037] In one embodiment, with reference to Figure 3, the guide rail 11 is formed on the inner wall of the frame 1, and the guide fitting 4 includes at least three guide fittings 4 that are circumferentially and uniformly arranged around the counterweight 3.

[0038] Traditional guiding structures often rely on complex chute and protrusion structures to ensure tight fitting and stable movement between the guide rail 11 and the guide fitting 4, while preventing them from accidentally disengaging. However, this design not only increases the manufacturing cost but also may lead to complication in maintenance. In this embodiment, by cleverly using the wall plate around the lifting cavity 12 directly as the guide rail 11, a great simplification in structure is achieved. Not only is the necessity of installing an independent track eliminated, but the number of components is also reduced, thereby reducing the overall weight and cost. At the same time, by circumferentially and uniformly arranging at least three guide fittings 4 around the counterweight 3, a comprehensive limit on the counterweight 3 in the horizontal direction is realized. This multi-point positioning structure ensures the stability and accuracy of the counterweight 3 during the lifting process, effectively preventing shaking or deviation. In addition, since complex structures such as chutes and protrusions are eliminated, the wear and noise generated by friction between components can be reduced, improving the reliability and service life of the system.

[0039] In one embodiment, a set of the guide fittings 4 are respectively installed at the top and bottom of the counterweight 3, and each set of the guide fittings 4 has at least three and is circumferentially and uniformly arranged around the counterweight 3.

[0040] By providing guide fittings 4 at both the top and bottom, multi-point support can be realized in the direction perpendicular to the ground, further improving the stability of the counterweight 3 during the lifting process and reducing the risk of shaking and deviation.

[0041] In one embodiment, each set of the guide fittings 4 has four.

[0042] The circumferential and uniform arrangement of the four guide fittings 4 makes the force on the counterweight 3 more uniform in all directions. Compared with three guide fittings 4, the four guide fittings 4 provide more contact points and support points, which means that during the lifting process of the counterweight 3, more forces are dispersed to each point, thereby reducing the force pressure on a single point and further improving the stability of the system.

[0043] In one embodiment, a positioning long hole 411 is provided on the roller bracket 41, and a threaded member passes through the positioning long hole 411 to fix the roller bracket 41 to the counterweight 3; and by loosening the threaded member, the relative position of the roller bracket 41 and the threaded member can be adjusted along the positioning long hole 411 to adjust the distance between the roller 42 and the guide rail 11.

[0044] By loosening the threaded member and moving the roller bracket 41 along the positioning slot 411, the user can easily adjust the relative position between the roller 42 and the guide rail 11. This adjustment capability is essential to ensure the proper gap between the roller 42 and the guide rail 11, which helps reduce friction, wear and noise while maintaining the smooth lifting and lowering of the counterweight 3. In addition, in actual applications, the size, shape or installation position of the guide rail 11 and the counterweight 3 may change for various reasons. This adjustable design allows the system to adapt to these changes and ensure a good fit between the roller 42 and the guide rail 11, both in the initial installation stage and during maintenance after long-term use.

[0045] Regarding the locking form of the roller bracket 41 by the threaded member, optionally, the threaded member includes a bolt and a nut, the bolt is fixed to the counterweight 3, the bolt passes through the positioning long hole 411 and is threadedly connected with the nut, loosening the nut can adjust the position of the roller bracket 41, and tightening the nut can lock the roller bracket 41. In another optional manner, the threaded member includes a bolt, a threaded hole is provided on the counterweight 3, the bolt passes through the positioning long hole 411 and is threadedly connected with the threaded hole, loosening the bolt can adjust the position of the roller bracket 41, and tightening the bolt can lock the roller bracket 41.

[0046] In one embodiment, a rope fixing rod is fixedly provided inside the frame 1 and crosses the lifting cavity 12, and the second end portion is fixed on the rope fixing rod.

[0047] A rope fixing rod is arranged in the frame 1 to provide a fixed fulcrum for the second end of the steel wire rope 22, so as to facilitate reliable fixing of the second end and help improve the reliability of the entire structure.

[0048] In one embodiment, two steel wire ropes 22 are arranged side by side, and the movable pulley 23 and the fixed pulley 21 have two wheel grooves respectively.

[0049] The two steel wire ropes 22 share the weight of the counterweight 3, reducing the stress load of a single steel wire rope 22, thereby improving the stability and safety of the entire system. In addition, the two steel wire ropes 22 arranged side by side help to maintain the balance of the counterweight 3 during the lifting process. Even if there is a slight eccentric load or external disturbance, the two steel wire ropes 22 can balance the stress of the counterweight 3 through their interaction, reducing shaking and deviation.

[0050] On the other hand, this embodiment also provides a hoist, including a material rack 5, a driving mechanism 6 and the above-mentioned counterweight installation structure, wherein the material rack 5 is slidably installed on one side of the frame 1, and the driving mechanism 6 is transmission-connected to the material rack 5, and the material rack 5 is driven to rise and fall by the driving mechanism 6.

[0051] Based on the counterweight installation structure of this embodiment, the hoist of this embodiment has the advantage of good operating stability.

[0052] During operation, the driving mechanism 6 drives the material rack 5 to move up and down, and the counterweight 3 moves up and down in the opposite direction through the linkage between the steel wire rope 22 and the material rack 5 .

[0053] Optionally, the driving mechanism 6 includes a motor 61 and a transmission mechanism 62, the transmission mechanism 62 includes a first synchronous wheel, a second synchronous wheel and a synchronous belt, the first synchronous wheel is connected to the output shaft of the motor 61, the second synchronous wheel is installed on the top of the frame 1, the synchronous belt is sleeved on the first synchronous wheel and the second synchronous wheel, the material rack 5 is fixedly connected to one side of the synchronous belt, the motor 61 drives the first synchronous wheel to rotate, and then drives the synchronous belt to operate, and the operating synchronous belt drives the material rack 5 to rise and fall.

[0054] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and other directions or positional relationships are only for the convenience of description and simplification of operation, 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 cannot be understood as a limitation of this application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0055] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0056] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0057] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the present application without creative work, and these methods will fall within the scope of protection of the present application.

Claims

1. A counterweight installation structure for a hoist, characterized in that: include: The frame (1) is provided with a guide rail (11) extending upward perpendicularly to the ground; The counterweight (3) is connected to a guide fitting (4), wherein the guide fitting (4) is slidably connected to the guide rail (11) to guide the vertical lifting of the counterweight (3); A transmission assembly (2) comprises a fixed pulley (21), a steel wire rope (22) and a movable pulley (23), wherein the fixed pulley (21) is mounted on the top of the frame (1), and the movable pulley (23) is mounted on the top of the counterweight (3); the steel wire rope (22) comprises a first end and a second end, wherein the first end is used to be connected to a material rack (5), and the second end is fixed to the frame (1) after passing through the fixed pulley (21) and the movable pulley (23) in sequence.

2. The counterweight installation structure of the hoist according to claim 1, characterized in that: The frame (1) is a cylindrical structure extending upward perpendicularly to the ground, and a lifting chamber (12) is formed inside the frame. The counterweight (3) is installed in the lifting chamber (12), and the guide rail (11) is arranged in the lifting chamber (12) to be matched and connected with the guide fitting (4) on the counterweight (3).

3. The counterweight installation structure of the hoist according to claim 2, characterized in that: The guide fitting (4) comprises a roller bracket (41) and a roller (42); the roller bracket (41) is fixed on the counterweight (3); the roller (42) is rotatably mounted on the roller bracket (41); and the roller (42) is slidably connected to the guide rail (11) to guide the counterweight (3) during its lifting and lowering process.

4. The counterweight installation structure of the hoist according to claim 3, characterized in that: The guide rail (11) is formed on the inner wall of the frame (1), and the guide fitting member (4) comprises at least three guide fitting members (4) uniformly arranged in the circumferential direction around the counterweight (3).

5. The counterweight installation structure of the hoist according to claim 4, characterized in that: A group of guide fittings (4) are respectively installed on the top and bottom of the counterweight (3), and each group of guide fittings (4) has at least three members which are evenly arranged around the counterweight (3).

6. The counterweight installation structure of the hoist according to claim 5, characterized in that: Each group of guide fittings (4) has four.

7. The counterweight installation structure of the hoist according to claim 4, characterized in that: The roller bracket (41) is provided with a positioning long hole (411), and a threaded member passes through the positioning long hole (411) to fix the roller bracket (41) on the counterweight (3); and by loosening the threaded member, the relative position of the roller bracket (41) and the threaded member can be adjusted along the positioning long hole (411) to adjust the distance between the roller (42) and the guide rail (11).

8. The counterweight installation structure of the hoist according to claim 4, characterized in that: A rope fixing rod is fixedly arranged inside the frame (1) and crosses the lifting chamber (12), and the second end portion is fixed on the rope fixing rod.

9. The counterweight installation structure of the hoist according to claim 1, characterized in that: The steel wire ropes (22) are provided with two wires arranged side by side, and the movable pulley (23) and the fixed pulley (21) respectively have two wheel grooves.

10. A hoist, characterized in that: It comprises a material rack (5), a driving mechanism (6) and a counterweight installation structure as described in any one of claims 1 to 9, wherein the material rack (5) is slidably installed on one side of the frame (1), the driving mechanism (6) is transmission-connected to the material rack (5), and the material rack (5) is driven to rise and fall by the driving mechanism (6).

Images