A manual lifting basket with multiple force storage mechanisms capable of switching between no-load and heavy-load modes

Abstract

The present invention discloses a manual lifting basket with switchable no-load and heavy-load modes and multiple force storage mechanisms. The basket has a central gear and four force storage components, the central gear is connected to a main connecting rod, wherein a first force storage component and a third force storage component are provided with racks, the racks are meshed and linked with the central gear, the second force storage component is hinged to the outer end surface of the central gear, and each force storage component is both a force storage mechanism and a power-assisting mechanism. Specifically, when the basket body descends, the central gear rotates clockwise, thereby compressing the first force storage component and the second force storage component at the same time, and pulling the third force storage component. At this time, the above-mentioned force storage components can play a force storage role. When the basket body rises, the central gear rotates counterclockwise, and the multiple force storage components that have previously completed force storage are in a rebound state at this time, so they play a power-assisting role, thereby being able to act together on the counterclockwise rotation of the central gear, and finally twisting the main connecting rod to drive the entire basket body to rise, thereby saving manpower to push the basket to rise.

Description

Technical Field

[0001] The invention relates to the technical field of manual lifting pull-out baskets, and in particular to a manual lifting pull-out basket with multiple force storage mechanisms and switchable no-load and heavy-load modes. Background Art

[0002] The lifting pull-out basket is an important household product for saving modern housing space. The pull-out basket is installed in the upper cabinet through a connecting rod. When it is needed, it is pulled down and slowly lowered with the help of the connecting rod and the power storage mechanism. However, the conventional lifting pull-out basket still has the following problems. First, the power storage and power-assisting mechanisms of the existing lifting pull-out basket are often separated, and multiple power storage mechanisms and power-assisting mechanisms are not linked, which easily leads to shaking of the lowering posture of the pull-out basket body when overloaded, and the power storage control is not good enough. Secondly, most of the current lifting pull-out baskets are not switchable in mode when they are descending or ascending, such as heavy load and empty load. Heavy load means the state when the load is too heavy, and empty load means only a few items are placed on it or no items are placed on it. The power storage and The force of the assist is completely different. If the power storage mechanism is operated at full load when not loaded, it will inevitably cause power waste and even wear out the entire power storage mechanism components. Finally, the existing lifting pull-out basket is more troublesome to inspect and repair, especially after the mode adjustment button is added, the chain and the mode adjustment button are connected. Usually, if a power storage or assisting component of the lifting of the pull-out basket body is stuck or moves too much, the chain and the mode adjustment button will be stuck, that is, the locking plug on the chain does not reach the specified height in sequence but the height exceeds the lateral position of the mode adjustment button, causing the locking pin of the mode adjustment button to be tilted and unable to be pulled out from the chain. Furthermore, the working box is fixedly installed on the side of the cabinet. If the entire pull-out basket body is dismantled for internal inspection just because a button on the side of the working box is stuck, the engineering workload will be huge. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a manual lifting pull-out basket with switchable empty and heavy load modes and multiple force storage mechanisms, so as to solve the technical problems mentioned in the background technology.

[0004] In order to solve the technical problem, the present invention adopts the following technical solution:

[0005] A manual lifting basket with multiple force storage mechanisms that can switch between no-load and heavy-load modes, comprising a working box, a basket body, a main connecting rod and a secondary connecting rod, wherein both ends of the main connecting rod and the secondary connecting rod are respectively hinged to the working box and the basket body to form a linkage lifting basket, a lifting buffer force storage mechanism is installed in the working box, and the lifting buffer force storage mechanism comprises a first force storage component, a second force storage component, a third force storage component, a fourth force storage component, a central gear, a first rack and a second rack, wherein one end of the main connecting rod is hinged to the central gear, and the output end of the first force storage component is connected to the first rack, The output end of the third force storage component is connected to the second rack, wherein the first rack and the second rack are both meshed with the center gear, and the output end of the second force storage component is hingedly connected to the outer end surface of the center gear. The first force storage component, the second force storage component and the third force storage component can all store force or assist as the center gear rotates. The third force storage component and the fourth force storage component are connected by a chain. A mode adjustment button is also provided on the outside of the working box. The mode adjustment button can lock the chain to adjust the working mode between the third force storage component and the fourth force storage component.

[0006] In a specific embodiment, the output end of the first force storage component is connected to a first rack rod, the first rack is located on the inner side of the first rack rod, the output end of the third force storage component is connected to a second rack rod, the second rack is located on the inner side of the second rack rod, a first limiting slide is installed on one side of the working box, a first limiting slide is provided on the first rack rod, the first limiting slide and the first limiting slide are slidably cooperated to limit the up and down sliding of the first rack rod, a second limiting slide is installed on the other side of the working box, the second rack rod is provided with a second limiting slide, the second limiting slide and the second limiting slide are slidably cooperated to limit the up and down sliding of the second rack rod.

[0007] In a specific embodiment, the third force storage component is a large torsion spring, the fourth force storage component is a small torsion spring, and the upper end of the working box is provided with a rotating gear for chain rotation and pulling support. A locking plug-in is connected between the chain and the small torsion spring, and the locking plug-in is provided with a locking slot for inserting the output end of the mode adjustment button. When the output end of the mode adjustment button is inserted into the lock slot, only the large torsion spring is left to store force on the right side of the working box, and this is the heavy load mode. When the mode adjustment button is pulled out, the small torsion spring and the large torsion spring on the right side of the working box store force at the same time, and this is the no-load mode.

[0008] In a specific embodiment, the mode adjustment button includes a button body and a lock pin, and the inner side of the button body is provided with a lock pin cavity for inserting and limiting the lock pin, and the lock pin cavity is provided with a first convex portion and a second convex portion, and the lock pin is provided with a first concave portion and a second concave portion, wherein the first convex portion and the second convex portion respectively engage with the first concave portion and the second concave portion when the lock pin is inserted into the lock pin cavity to achieve the limiting of the lock pin, and a button channel is provided on the side of the working box, and the mode adjustment button is inserted from the button channel and acts on the lock slot.

[0009] In a specific embodiment, a limit lock groove is provided at the lower end of the button body, and a spring top column is provided at the bottom of the button channel. Under the action of the bottom spring, the spring top column is always pushed upward and embedded in the limit lock groove to limit the insertion and withdrawal stroke of the button body. A top column groove is also provided on the inner side of the button channel, and the spring top column is located in the top column groove.

[0010] In a specific embodiment, an unlocking groove is provided on the outer side of the top column groove, and an unlocking block is slidably provided on the unlocking groove. The unlocking block is connected to the column end of the spring top column. Pressing the unlocking block downward can drive the spring top column out of the limit lock groove, so that the mode adjustment button can be pulled out, which is convenient for installation and later maintenance.

[0011] In a specific embodiment, a bearing and a shaft locking component are coaxially provided on the inner side of the central gear, wherein the shaft locking component includes an inner connecting portion and an outer connecting portion, wherein the inner connecting portion is fixedly connected to the central gear and the shaft hole of the bearing, and the inner connecting portion is provided with at least one vertical section, the outer connecting portion is connected to a synchronization rod, the other end of the synchronization rod is connected to a second working box, the second working box is connected to a second main connecting rod and a second auxiliary connecting rod, and a handle is also provided at the lower end of the pull-out basket body.

[0012] In a specific embodiment, the first force storage component and the second force storage component are each one of a gas spring, a gas cylinder or a hydraulic cylinder. A limiting channel is provided on the outer side of the first force storage component. An upper limit portion is provided on the upper end of the first rack rod and a lower limit portion is provided on the lower end, so as to limit the up and down stroke of the first rack rod and thus limit the force storage and buffer stroke of the entire lifting buffer force storage mechanism.

[0013] In a specific embodiment, the original hinge point of the second force storage component is located at the upper left of the outer end surface of the central gear, and when the pull-out basket body descends, an initial driving force can be given to the pull-out basket body.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) A central gear and four force storage components are provided, wherein the central gear is connected to a main connecting rod, wherein a rack is provided on the first force storage component and the third force storage component, the rack is meshed and linked with the central gear, and the second force storage component is hinged to the outer end face of the central gear, and each force storage component is both a force storage mechanism and a power-assisting mechanism. Specifically, when the pull-out basket body descends, the central gear rotates clockwise, thereby compressing the first force storage component and the second force storage component at the same time, and pulling the third force storage component. At this time, the above-mentioned force storage components can play a force storage role. When the pull-out basket body rises, the central gear rotates counterclockwise, and the multiple force storage components that have previously completed force storage are in a rebound state at this time, so they play a power-assisting role, so that they can act together on the counterclockwise rotation of the central gear, and finally twist the main connecting rod to drive the entire pull-out basket body to rise, thereby saving manpower to push the pull-out basket to rise.

[0016] (2) The present invention provides a third force storage component and a fourth force storage component, which are connected by a chain. A mode adjustment button is also provided on the side of the working box, and a lock slot is provided at the connection between the chain and the fourth force storage component, so that the mode adjustment can be quickly positioned and inserted into the lock slot. When the mode adjustment button is inserted, only the large torsion spring of the third force storage component participates in the force storage, which belongs to the heavy load mode. When the mode adjustment button is pulled out, the small torsion spring of the fourth force storage component participates in the force storage. At this time, most of the bearing force is located at the small torsion spring, thereby avoiding the problem that the large torsion spring is occupied by both heavy load and no-load, causing the large torsion spring to wear faster.

[0017] (3) As for the maintenance of the mode adjustment button, the present invention provides an unlocking groove on the outer side of the top column groove, and an unlocking block is connected to the unlocking groove, and the unlocking block is connected to the column end of the spring top column. Pressing the unlocking block downward can drive the spring top column out of the limit lock groove, and the button body and the lock pin of the mode adjustment button can be plugged in through a plurality of concave parts and convex parts, and the convex parts and the concave parts are arc-shaped structures, thereby ensuring that the button body can be pulled out from the button channel after being out of the limit of the spring top column, and finally the lock pin is pulled out, so that a simple maintenance method can be used to solve the problem of the mode adjustment button and the chain being stuck.

[0018] (4) In the present invention, the second force storage component has an original hinge point located at the upper left of the central gear. When the pull-out basket body is pulled out of the cabinet and lowered, it can rely on its first assisting period to give the pull-out basket body an initial driving force, so that the lowering of the pull-out basket body becomes more labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 : This is the overall structure assembly diagram of the lifting basket of the present invention;

[0020] Figure 2 : This is a schematic diagram of the structure of the working box and the lifting buffer storage mechanism in the lifting basket of the present invention;

[0021] Figure 3 :Disassembly of the mode adjustment button in the lifting basket of the present invention Figure 1 ;

[0022] Figure 4 :Disassembly of the mode adjustment button in the lifting basket of the present invention Figure 2 ;

[0023] Figure 5 : This is a cross-sectional view of the mode adjustment button in the lifting basket of the present invention;

[0024] Figure 6 : This is a radial dissection diagram of the overall structure of the lifting basket of the present invention;

[0025] Figure 7 : This is a schematic diagram of the central gear, bearing, shaft lock and synchronization rod structure in the lifting basket of the present invention ( Figure 6 (enlarged view of part A in the middle);

[0026] Figure 8 : This is a schematic diagram of the button body and the lock pin structure in the patented mode adjustment button of the present invention;

[0027] Fig. 9 : It is a schematic diagram of the unlocking slot and unlocking block structure in the second embodiment of the present invention;

[0028] Fig.10 : This is a schematic diagram of the overall structure of the lifting basket of the present invention (right side upward viewing angle);

[0029] Fig.11 : This is a schematic diagram of the main body of the pull-out basket of the present invention being at the upper end;

[0030] Fig.12 : It is a schematic diagram of the main body of the pull-out basket of the present invention being lowered or raised halfway;

[0031] Fig.13 : This is a schematic diagram of the main body of the pull-out basket of the present invention being lowered to the bottom;

[0032] In the figure: working box 1, basket body 2, main connecting rod 3, auxiliary connecting rod 4, first force storage component 5, second force storage component 6, third force storage component 7, fourth force storage component 8, central gear 11, first rack 51, second rack 71, chain 10, mode adjustment button 9, first rack rod 52, second rack rod 72, first limiting slide 53, first limiting slide rail 521, second limiting slide 73, second limiting slide rail 721, rotating gear 12, lock plug 101, lock slot 102, button Button body 91, locking pin 92, locking pin cavity 910, first convex portion 911, second convex portion 912, first concave portion 921, second concave portion 922, button channel 12, limit lock groove 913, spring top column 121, top column groove 122, unlocking groove 123, unlocking block 124, bearing 13, lock shaft member 14, internal connection portion 141, external connection portion 142, vertical section 141a, synchronization rod 15, handle 19, second working box 16, second main connecting rod 17, second secondary connecting rod 18. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0034] refer to Figures 1 to 13 :

[0035] Example 1: First refer to Figure 1-Figure 2The invention patent of this embodiment discloses a manual lifting basket with multiple power storage mechanisms that can switch between no-load and heavy-load modes, including a working box 1, a basket body 2, a main connecting rod 3 and a secondary connecting rod 4, wherein both ends of the main connecting rod 3 and the secondary connecting rod 4 are respectively hinged to the working box 1 and the basket body 2 to form a linkage lifting basket. When lifting, the main connecting rod 3 is connected to the transmission component in the working box 1 as the main force-bearing and power-assisting connecting rod. A lifting buffer power storage mechanism is installed in the working box 1, and the lifting buffer power storage mechanism includes a first power storage mechanism. The main connecting rod 3 is connected to the central gear 11, that is, the main connecting rod 3 is linked to the central gear 11, the output end of the first power storage component 5 is connected to the first rack 51, the output end of the third power storage component 7 is connected to the second rack 71, the first rack 51 and the second rack 71 are both meshed and linked with the central gear 11, and as a preferred embodiment, the first power storage component 5 is located at the central gear 11. The third force storage component 7 is located on the upper left side of the wheel 11, and the third force storage component 7 is located on the upper right side of the center gear 11, so the first rack 51 is located on the left side of the center gear 11, and the second rack 71 is located on the right side of the center gear 11. When the center gear 11 rotates, the first rack 51 and the second rack 71 slide up and down, thereby storing power or assisting transmission with the first force storage component 5 and the third force storage component 7. Specifically, the first force storage component 5 is preferably a hydraulic telescopic rod, and the third force storage component is preferably a tension spring. When storing power, the center gear rotates clockwise, and the first The first rack 51 at the end of the force storage component 5 is compressed upward, and the second rack 71 at the end of the third force storage component 7, which is the tension spring, is pulled downward, so that the spring is stretched, thereby the first and third force storage components complete force storage, and the output end of the second force storage component 6 is hingedly connected to the outer end face of the central gear 11, and the position of its initial original hinge point is located at the upper left of the outer end face of the central gear 11, and the first force storage component 5, the second force storage component 6 and the third force storage component 7 can all store force or assist as the central gear 11 rotates;

[0036] refer to Figure 2 Combined with Figure 11-13, force storage principle: Specifically, the force storage here is energy storage, which refers to compressing or stretching the above-mentioned force storage component, compressing its corresponding rebound device or stretching its stretching mechanism, so that its force storage component can obtain a rebound or back-stretching force, such as a compression cylinder, such as a stretching spring, both of which can obtain force storage, so here, a preferred embodiment is given, as shown in the accompanying drawings of the specification, the first force storage component 5 is preferably a cylinder, the third force storage component 7 is a tension spring with large tension, and in the original position of the first rack 51 and the third rack 71, the uppermost end of the first rack 51 is meshed with the center rack, and the lowermost end of the second rack 71 is meshed with the center rack. When the pull-out basket body 2 When descending, because the basket body 2 moves from a high place to a low place, and more items may be placed on the basket body 2, the potential energy can be converted into kinetic energy, but these kinetic energies are stored by these force storage components. Specifically, when the lifting basket descends, the main connecting rod 3 drives the central gear 11 to rotate clockwise, and the first rack 51 will be linked upward to compress the cylinder, that is, compress the first force storage component 5 (cylinder) to compress it to store energy or accumulate force, and the second rack 71 will be linked downward to stretch the third force storage component 7 (large tension spring), so that the spring is stretched and the energy storage or force storage is also completed. Here, the energy storage of the first force storage component 5 and the third force storage component 7 is completed at the same time.

[0037] refer to Figure 2 Combined with Figure 11-13 , Assistance principle: Specifically, the assistance here is to release the aforementioned stored force or energy to help the basket body 2 rise, thereby saving manpower to push. Specifically, when the basket body 2 rises, the main connecting rod 3 drives the center gear 11 to rotate counterclockwise. Originally, the first rack 51 rises to the top, that is, the first rack 51 is the lowest part and meshes with the center gear 11, and on the contrary, the second rack 71 is the top and meshes with the center rack. When the lifting basket rises, on the contrary, the center gear 11 rotates counterclockwise, and the first rack 51 will be linked downward, because the output end of the cylinder is just extended downward, so it can provide assistance for the counterclockwise rotation of the left side of the center gear 11, that is, assist the rotation of the center gear 11. Similarly, the second rack 71 will also be linked upward with the center rack, because the spring has an automatic contraction characteristic, the originally stretched spring is contracted at this time, and can also give a counterclockwise rotation assistance to the right side of the center gear 11, thereby achieving assistance.

[0038] refer to Figure 2 Combined with Figure 11-13Similarly, the second force storage component 6 is preferably also a cylinder, and its original position (the state where the basket body 2 is at the top) is located at the upper left of the outer end surface of the central gear 11. When the lifting basket is lowered, the central gear 11 rotates clockwise, and its formation is divided into four sections. The first section is a small section when the central gear 11 just starts to rotate, and the second force storage component 6 is in an upward extension period. At this time, the second force storage component 6 can provide an initial assistance for the pulling out of the basket body 2, that is, to assist the pulling basket to be pulled out from the cabinet. In the second section, when the basket body 2 is pulled out a short distance, the second force storage component 6 enters a compression stroke, that is, a stage of storing energy until the basket body 2 drops to the lowest point, then the energy storage of the second force storage component 6 also reaches the maximum. In the third section, when the lifting basket rises, the central gear 11 rotates counterclockwise, and the second force storage component 6 When the force component 6 is in the upward extension period, that is, releasing the stored energy, it can assist the first force storage component 5 and the third force storage component 7 to rotate the center gear 11 counterclockwise, that is, provide an initial power for the starting action of the pull-out basket to rise. In the fourth section, when the pull-out basket body 2 is about to rise to the top, the hinge point of the second force storage component 6 rotates to the top of the center gear 11, and its released stored energy reaches the maximum, so as to help the pull-out basket quickly enter the designated position inside the cabinet. After passing the top point, there is another short compression energy storage stroke, and at this time, the rising stage of the pull-out basket body 2 is just about to be completed, so the force of the first force storage component 5 or the third force storage component 7 can be converted into the compression force of the second force storage component 6, so as to prepare for the second force storage component 6 to provide an initial driving force when the pull-out basket body 2 is pulled out next time.

[0039] refer to Figure 1 , Figure 4 and Figure 5 Specifically, the third force storage component 7 and the fourth force storage component 8 are connected by a chain 10, and a mode adjustment button 9 is also provided on the outside of the working box 1. The mode adjustment button 9 can lock the chain 10 to adjust the working mode between the third force storage component 7 and the fourth force storage component 8. When the pull-out basket body 2 is unloaded, the mode adjustment button 9 can be pulled out to separate it from the chain 10. At this time, the fourth force storage component 8 participates in the work. On the one hand, when the third force storage component 7 and the fourth force storage component 8 act together, the fourth force storage component 8 adopts a small spring, a soft spring, and the entire third force storage component The whole composed of the component 7, the chain 10 and the fourth force storage component 8 will preferably stretch the fourth force storage component 8. Then, at this time, the third force storage component 7 and the fourth force storage component 8 can be avoided from being stretched at the same time, which may cause the third force storage component 7 to be damaged due to long-term use. When it is used as a heavy load, that is, when a lot of heavy objects are placed in the pull-out basket body 2, the mode adjustment button 9 can be inserted to isolate the fourth force storage spring, so that only the third force storage component 7 can participate in force storage and assisting. Because the third force storage component 7 is a large torsion spring, it can withstand greater tension and provide greater assistance at the same time, so it can cope with heavy loads.

[0040] refer to Figure 2 In a preferred embodiment, the output end of the first force storage component 5 is connected to the first rack rod 52, the first rack rod 51 is located on the inner side of the first rack rod 52, the output end of the third force storage component 7 is connected to the second rack rod 72, the second rack rod 71 is located on the inner side of the second rack rod 72, a first limiting slide 53 is installed on one side of the working box 1, a first limiting slide rail 521 is provided on the first rack rod 52, the first limiting slide rail 521 and the first limiting slide rail 53 are slidably matched to limit the up and down sliding of the first rack rod 52, a second limiting slide rail 73 is installed on the other side of the working box 1, the second rack rod 72 is provided with a second limiting slide rail 721, the second limiting slide rail 721 and the second limiting slide rail 73 are slidably matched to limit the up and down sliding of the second rack rod 72.

[0041] refer to Figure 2 and Figure 3 In a preferred embodiment, the third force storage component 7 is a large torsion spring, the fourth force storage component 8 is a small torsion spring, and the upper end of the working box 1 is provided with a rotating gear 12 for the chain 10 to rotate and provide pulling support. The rotating gear 12 has a rotating shaft and a bearing 13 for rotation. A lock plug-in 101 is connected between the chain 10 and the small torsion spring. The lock plug-in 101 is provided with a lock slot 102 for inserting the output end of the mode adjustment button 9. When the output end of the mode adjustment button 9 is inserted into the lock slot 102, only the large torsion spring is left to store force on the right side of the working box 1, and this is the heavy load mode. When the mode adjustment button 9 is pulled out, the right side of the working box 1 has a small torsion spring and a large torsion spring storing force at the same time, and this is the no-load mode.

[0042] refer to Figure 2 , Figure 3-Figure 5, Embodiment 2: On the basis of Embodiment 1, if a certain force storage or assisting component of the lifting and lowering of the basket body 2 is stuck or moves too much, it is easy to cause the chain 10 and the mode adjustment button 9 to get stuck, that is, the lock plug 101 on the chain 10 does not reach the specified height in sequence but exceeds the horizontal position of the mode adjustment button 9, causing the lock pin 92 of the mode adjustment button 9 to be tilted and unable to be pulled out from the chain 10. Furthermore, the work box 1 is fixedly installed on the side of the cabinet. If the entire basket body 2 is removed for internal inspection just because a button on the side of the work box 1 is stuck, the engineering workload is huge. This embodiment provides an embodiment that can facilitate the inspection of the mode adjustment button 9. Specifically, the mode adjustment button 9 includes a button body 91 and a lock pin 92. The inner side of the button body 91 is provided with a lock pin cavity 910 for inserting and limiting the lock pin 92. The lock pin cavity 910 is provided with a first convex portion 911 and a second convex portion 912, the lock pin 92 is provided with a first concave portion 921 and a second concave portion 922, wherein the first convex portion 911 and the second convex portion 912 respectively engage with the first concave portion 921 and the second concave portion 922 when the lock pin 92 is inserted into the lock pin cavity 910 to limit the lock pin 92. Preferably, the first convex portion 911, the second convex portion 912, the first concave portion 921 and the second concave portion 922 are all arc-shaped transition structures. Preferably, the button body 91 is made of plastic material, and the lock pin 92 is made of metal material, that is, the button body 91 can be separated from the lock pin 92 under a certain force. Of course, in some embodiments, the lock slot 102 has a certain up and down stroke, but considering that the insertion of the lock pin 92 is required to complete the switching between the heavy load and light load modes, the stroke is generally just right. Here, for the problem that such lock pin 92 is easy to get stuck, the fir tree solution is proposed to perfectly solve the above technical problems.

[0043] Specifically, a button channel 12 is provided on the side of the working box 1, and the mode adjustment button 9 is inserted from the button channel 12 and acts on the lock slot 102. As another possible problem, after the lock pin 92 is inserted into the button channel 12, it is easy for the lock pin 92 to come out of the lock slot 102 due to the opposite force of the basket being repeatedly lifted and lowered. Here, reference is made to Figure 5 , a solution is proposed, the lower end of the button body 91 is provided with a limit lock groove 913, the bottom of the button channel 12 is provided with a spring top column 121, the spring top column 121 is always pushed upward under the action of the bottom spring and embedded in the limit lock groove 913 to limit the insertion and extraction stroke of the button body 91, the inner side of the button channel 12 is also provided with a top column groove 122, the spring top column 121 is located in the top column groove 122, and the outer side of the top column groove 122 is provided with an unlocking groove 123, reference Fig. 9The unlocking groove 123 is slidably provided with an unlocking block 124, which is connected to the column end of the spring top column 121, and the unlocking block 124 also slides up and down in the unlocking groove 123 with the spring top column 121, and the up and down sliding can be achieved by a guide rail or a guide groove, and pressing the unlocking block 124 downward can drive the spring top column 121 to disengage from the limiting lock groove 913. On the one hand, when there is no problem of the locking pin 92 being stuck, the spring top column 121 presses against the limiting lock groove 913 at the bottom of the adjusting button 9 to prevent the adjusting button 9 from falling off by itself. On the other hand, when the locking pin 92 is stuck When there is a problem, the unlocking block 124 can be pressed downward to disengage it from the limiting lock groove 913 at the lower end of the adjusting button 9, so that the button body 91 can be pulled out by a clamp or manually (the button body 91 and the locking pin 92 mentioned above can be pulled out by force), thereby leaking the locking pin 92. Because the volume of the locking pin 92 is much smaller than the diameter of the button channel 12, the locking pin 92 can be pulled out from the clamped chain 10 with pliers, and finally the mode adjustment button 9 can be installed back through various resets of the working box 1. This maintenance work can be completed from the side of the working box 1, and it is only a small project and is very convenient.

[0044] refer to Figure 6-Figure 7 Specifically, the preferred working box 1 is installed on both sides of the pull basket body 2. In this way, after the working boxes 1 on both sides are synchronized, they have eight force storage components, which can easily cope with the rise and fall of the pull basket body 2. The inner side of the central gear 11 is coaxially provided with a bearing 13 and a shaft lock 14, wherein the shaft lock 14 includes an inner connecting portion 141 and an outer connecting portion 142, wherein the inner connecting portion 141 is fixedly connected to the central gear 11 and the shaft hole of the bearing 13, and the inner connecting portion 141 is at least provided with There is a vertical section 141a. Similarly, the axial holes of the bearing 13 and the center gear 11 are also provided with at least one vertical section 141a. The vertical section 141a can ensure that the rotation between the bearing 13, the center gear 11 and the locking shaft 14 will not slip. The external connection part 142 is connected to the synchronization rod 15, and the other end of the synchronization rod 15 is connected to the second working box 16. The second working box 16 is connected to the second main connecting rod 17 and the second auxiliary connecting rod 18. The lower end of the pull-out basket body 2 is also provided with a handle 19.

[0045] Specifically, the first force storage component 5 and the second force storage component 6 are each one of a gas spring, a gas cylinder or a hydraulic cylinder. A limiting channel is provided on the outer side of the first force storage component 5. An upper limit portion is provided on the upper end of the first rack rod 52 and a lower limit portion is provided on the lower end, so as to limit the up and down stroke of the first rack rod 52 and thus limit the force storage and buffer stroke of the entire lifting buffer force storage mechanism.

[0046] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A manual lifting basket with multiple power storage mechanisms that can switch between no-load and heavy-load modes, comprising a working box, a basket body, a main connecting rod and a secondary connecting rod, wherein both ends of the main connecting rod and the secondary connecting rod are respectively hinged to the working box and the basket body to form a linkage lifting basket, and a lifting buffer power storage mechanism is installed in the working box, characterized in that: The lifting and buffering force storage mechanism includes a first force storage component, a second force storage component, a third force storage component, a fourth force storage component, a center gear, a first rack and a second rack, wherein one end of the main connecting rod is hinged to the center gear, the output end of the first force storage component is connected to the first rack, and the output end of the third force storage component is connected to the second rack, wherein the first rack and the second rack are both meshed and linked with the center gear, and the output end of the second force storage component is hingedly connected to the outer end surface of the center gear, and the first force storage component, the second force storage component and the third force storage component can all store force or assist with the rotation of the center gear, and the third force storage component and the fourth force storage component are connected by a chain, and a mode adjustment button is also provided on the outside of the working box, and the mode adjustment button can lock the chain to adjust the working mode between the third force storage component and the fourth force storage component.

2. A manual lifting basket with multiple power storage mechanisms capable of switching between empty and heavy load modes as claimed in claim 1, characterized in that: The output end of the first force storage component is connected to the first rack rod, the first rack is located on the inner side of the first rack rod, the output end of the third force storage component is connected to the second rack rod, the second rack is located on the inner side of the second rack rod, a first limiting slide is installed on one side of the working box, a first limiting slide is provided on the first rack rod, the first limiting slide is slidably matched with the first limiting slide to limit the up and down sliding of the first rack rod, a second limiting slide is installed on the other side of the working box, the second rack rod is provided with a second limiting slide, the second limiting slide is slidably matched with the second limiting slide to limit the up and down sliding of the second rack rod.

3. A manual lifting basket with multiple power storage mechanisms capable of switching between empty and heavy load modes as claimed in claim 1, characterized in that: The third force storage component is a large torsion spring, and the fourth force storage component is a small torsion spring. The upper end of the working box is provided with a rotating gear for chain rotation and pulling support. A lock plug is connected between the chain and the small torsion spring. The lock plug is provided with a lock slot for inserting the output end of the mode adjustment button. When the output end of the mode adjustment button is inserted into the lock slot, only the large torsion spring is left to store force on the right side of the working box, and this is the heavy load mode. When the mode adjustment button is pulled out, the small torsion spring and the large torsion spring are stored on the right side of the working box at the same time, and this is the no-load mode.

4. A manual lifting basket with multiple power storage mechanisms capable of switching between empty and heavy load modes as claimed in claim 1, characterized in that: The mode adjustment button includes a button body and a lock pin, the inner side of the button body is provided with a lock pin cavity for inserting and limiting the lock pin, the lock pin cavity is provided with a first convex portion and a second convex portion, the lock pin is provided with a first concave portion and a second concave portion, wherein the first convex portion and the second convex portion respectively engage with the first concave portion and the second concave portion when the lock pin is inserted into the lock pin cavity to achieve the limiting of the lock pin, and a button channel is provided on the side of the working box, and the mode adjustment button is inserted from the button channel and acts on the lock slot.

5. A manual lifting basket with multiple power storage mechanisms capable of switching between no-load and heavy-load modes as claimed in claim 4, characterized in that: A limit lock groove is provided at the lower end of the button body, and a spring top column is provided at the bottom of the button channel. Under the action of the bottom spring, the spring top column is always pushed upward and embedded in the limit lock groove to limit the insertion and withdrawal stroke of the button body. A top column groove is also provided on the inner side of the button channel, and the spring top column is located in the top column groove.

6. A manual lifting basket with multiple power storage mechanisms capable of switching between empty and heavy load modes as claimed in claim 5, characterized in that: An unlocking groove is provided on the outer side of the top column groove, and an unlocking block is slidably provided on the unlocking groove. The unlocking block is connected to the column end of the spring top column. Pressing the unlocking block downward can drive the spring top column out of the limit lock groove, so that the mode adjustment button can be pulled out, which is convenient for installation and later maintenance.

7. A manual lifting basket with multiple force storage mechanisms capable of switching between empty and heavy load modes as claimed in claim 1, characterized in that: A bearing and a shaft locking component are coaxially arranged on the inner side of the central gear, wherein the shaft locking component includes an inner connecting portion and an outer connecting portion, wherein the inner connecting portion is fixedly connected to the central gear and the shaft hole of the bearing, and at least one vertical section is provided on the inner connecting portion, and the outer connecting portion is connected to a synchronization rod, and the other end of the synchronization rod is connected to a second working box, and the second working box is connected to a second main connecting rod and a second auxiliary connecting rod, and a handle is also provided at the lower end of the pull-out basket body.

8. A manual lifting basket with multiple force storage mechanisms capable of switching between empty and heavy load modes as described in any one of claims 1 to 7, characterized in that: The first force storage component and the second force storage component are both one of a gas spring, a cylinder or a hydraulic cylinder.

9. A manual lifting basket with multiple force storage mechanisms capable of switching between empty and heavy load modes as described in any one of claims 2 to 7, characterized in that: A limiting channel is provided on the outer side of the first force storage component, an upper limit portion is provided on the upper end of the first rack rod, and a lower limit portion is provided on the lower end, so as to limit the up and down stroke of the first rack rod and thus limit the force storage and buffer stroke of the entire lifting buffer force storage mechanism.

10. A manual lifting basket with multiple power storage mechanisms capable of switching between empty and heavy load modes as claimed in claim 9, characterized in that: The original hinge point of the second force storage component is located at the upper left of the outer end surface of the central gear, and when the pull-out basket body descends, it can give the pull-out basket body an initial driving force.

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