A new type of elevator

Abstract

The application provides a new type of hoist, which comprises a pulley shaft assembly 0 and a stand column, the upper end of the stand column is provided with a stand column fixing link plate, a winding drum is not used in the transmission process, the structure is simple, maintenance is convenient, damage is not easy, the safety factor is high, and the effective space is not affected; the hoist can normally work in an ultra-low temperature environment; and the hoist can be widely used in various large-scale hoists. The application further provides a protection mechanism, when the loading platform rises, one side of the rotary platform will be subjected to the dead weight to progressively rotate around the rotary shaft, then the limiting block will limit the rotary platform, so that the loading platform and the rotary platform form a 30-degree angle, safety accidents are prevented, the automatic lifting rail assembly falls when rising, the rail also falls, when falling to the plane, the top rod contacts the ground to rise, the rail is pushed open, personnel are convenient to go in and out, the safety of the operator in the operation process is ensured, and the truck is blocked when the truck slips, so that safety accidents are avoided.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, and in particular to a flexible turning bed device with a trackless lifting structure. Background Technology

[0002] A new type of lifting machine is widely used in various large-scale production operations, especially in environments involving height. However, the unique working environment of quick-freezing warehouses demands rapid operation and places high demands on the temperature and humidity resistance of tools installed within. Ultra-low temperature cold storage, in particular, suffers from low inbound and outbound efficiency due to its limited space and special working environment. The narrow and long working aisles, high shelves, and numerous pipe layers within cold storage necessitate manual climbing for the loading and unloading of frozen goods, which is extremely inconvenient. Furthermore, the low temperatures require workers to wear thermal protective clothing, further hindering their movement and reducing efficiency. The frost-covered floors during pipe cutting pose a safety hazard. Currently, there is no suitable lifting platform capable of handling loading and unloading operations in such confined, ultra-low temperature environments. Based on this, our company has developed two new types of lifting machines suitable for this working environment. Summary of the Invention

[0003] To address the aforementioned shortcomings of the prior art, the present invention provides a novel hoist.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows:

[0005] A novel hoist includes: a pulley shaft assembly and a column. A column fixing connection plate is provided at the upper end of the column, and a top frame is provided at the upper end of the column. A top frame fixing connection plate is provided below the top frame, and the top frame fixing connection plate is connected to the column fixing connection plate by bolts. A sliding sleeve positioning channel steel is provided above the top frame. A motor plate is provided above one side of the top frame, and a motor is provided above the motor plate. A pulley is provided on the motor's shaft, and a flexible coupling is provided on the motor's shaft. The top frame is equipped with... The device includes a bearing housing with a connecting shaft inside. A pulley is mounted on the connecting shaft. The end of the connecting shaft furthest from the bearing housing is connected to the motor shaft via a flexible coupling. A V-belt is fitted onto the pulley. A screw jack is located at the midpoint of one side of the sliding sleeve positioning channel steel. A screw jack is mounted on the screw jack, and a screw connecting flange is located at one end of the screw. A sliding sleeve is positioned between the sliding sleeve positioning channel steels, and a sliding tensioner is fitted onto the sliding sleeve. The midpoint of one side of the sliding tensioner connects to the screw connecting flange. The connection includes a channel steel platform reinforcing tube installed in the middle of the sliding tensioner's interior. There are five pulley shaft assemblies in total, with two located on either side below the top frame, one located in the middle above the top frame, and the remaining two located on either side above the sliding tensioner. A column sleeve is fitted onto the column, and a column sleeve fixing plate is installed on the column sleeve. A column embedded plate is installed at the lower end of the column. A cargo platform is located below the top frame, and the cargo platform is connected via the column sleeve. The fixing plate is connected to the column sleeve. A limit block is provided on one inner wall of the cargo platform. A rotary shaft is provided on the side of the cargo platform near the limit block. A rotary platform is provided on the rotary shaft. An automatic lifting railing assembly is provided on the side of the cargo platform near the limit block. A hook upright plate is provided on the upper part of the cargo platform near the column sleeve. A hook upright plate fixing plate is provided below the hook upright plate. A fixing plate reinforcing plate is provided below the hook upright plate fixing plate. A wire rope end fixing station plate is provided on the upper part of the top frame away from the motor.

[0006] As an improvement, the pulley shaft assembly includes: a pulley shaft fixing plate, two of which are provided. A pulley shaft is provided on the top of the pulley shaft fixing plate, and pulleys are provided at both ends of the pulley shaft. Bearings are provided inside the pulleys, and the pulleys are sleeved on both ends of the pulley shaft through the bearings.

[0007] As an improvement, a steel wire rope is provided on the pulley, and a tensioner is provided at both ends of the steel wire rope. The steel wire rope is connected to the hook upright plate and the steel wire rope end fixing plate respectively through the tensioner.

[0008] As an improvement, the automatic lifting guardrail assembly includes: a support rod and a top rod, with a guardrail provided above the support rod. The support rod and the guardrail are movably connected. A limit plate is provided on the top rod, and there are two limit plates in total. The support rod is located on both sides of the cargo platform, the top rod passes through the cargo platform, and the limit plates are located on both sides of the cargo platform.

[0009] The beneficial effects of this invention are as follows:

[0010] This invention achieves synchronous lifting or lowering of four lifting points by rotating a lead screw driven by a motor, which in turn moves a pulley and a tensioner. It eliminates the need for a drum during transmission, resulting in a simple structure, easy maintenance, durability, high safety, and no impact on usable space. It can operate normally in ultra-low temperature environments and is widely applicable to various large-scale hoists. The invention also includes a safety mechanism. When the cargo platform rises, one side of the rotating platform rotates around its own weight, and a limit block restricts this rotation, creating a 30-degree angle between the cargo platform and the rotating platform to prevent accidents. During the lifting of the automatic lifting railing assembly, the top rod descends, and the railing follows. Upon reaching the ground, the top rod rises upon contact with the ground, opening the railing for easy access and ensuring operator safety. This also prevents the truck from slipping and avoids accidents. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the present invention.

[0012] Figure 2 This is a top view of the present invention;

[0013] Figure 3 This is a side view of the present invention;

[0014] Figure 4 This is a perspective view of the present invention with some structural elements omitted.

[0015] Figure 5 This is a schematic diagram of the sliding tensioner in this invention;

[0016] Figure 6 This is a schematic diagram of the pulley shaft assembly in this invention;

[0017] Figure 7 This is a schematic diagram of the automatic lifting barrier assembly in this invention;

[0018] Figure 8 for Figure 2 Enlarged structural diagram at point A;

[0019] Figure 9 This is a perspective view of another embodiment of the present invention;

[0020] Figure 10 This is a top view of another embodiment of the present invention.

[0021] Appendix Label Reference Table:

[0022] 1. Motor; 2. Pulley; 3. Flexible coupling; 4. Connecting shaft; 5. Bearing housing; 7. V-belt; 8. Screw jack; 9. Screw connecting flange; 10. Sliding tensioner; 11. Screw; 20. Pulley shaft assembly; 201. Pulley shaft fixing plate; 202. Pulley shaft; 203. Pulley; 30. Hook upright plate; 31. Rope tensioner; 32. Wire rope; 33. Hook upright plate fixing plate; 39. Wire rope end fixing plate; 60. Limit block; 61. Rotary shaft; 62. Rotary platform; 63. Automatic lifting railing assembly; 631. Support rod; 632. Railing; 633. Top rod; 634. Limit plate; 66. Cargo platform; 77. Motor plate; 78. Sliding sleeve; 79. Channel steel platform reinforcing tube; 80. Top frame fixing connection plate; 81. Column fixing connection plate; 82. Top frame; 83. Sliding sleeve positioning channel steel; 95. Column; 96. Column sleeve; 97. Column sleeve fixing plate; 98. Column embedded plate; 901. Copper nut; 101. Copper nut fixing plate. Detailed Implementation

[0023] To make the content of this invention easier to understand, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0024] like Figure 1As shown, a novel hoist includes: a pulley shaft assembly 20 and a column 95. A column fixing connection plate 81 is provided at the upper end of the column 95. A top frame 82 is provided at the upper end of the column 95. A top frame fixing connection plate 80 is provided below the top frame 82. The top frame fixing connection plate 80 and the column fixing connection plate 81 are connected by bolts. A sliding sleeve positioning channel steel 83 is provided above the top frame 82. A motor plate 77 is provided above one side of the top frame 82. A motor 1 is provided above the motor plate 77. A pulley 2 is provided on the shaft of the motor 1. A flexible coupling is provided on the shaft of the motor 1. A bearing seat 5 is provided on the top frame 82 of the shaft coupling 3. A connecting shaft 4 is provided inside the bearing seat 5. A pulley 2 is also provided on the connecting shaft 4. The end of the connecting shaft 4 away from the bearing seat 5 is connected to the rotating shaft of the motor 1 through the flexible coupling 3. A V-belt 7 is fitted on the pulley 2. A screw jack 8 is provided in the middle of one side of the sliding sleeve positioning channel steel 83. A screw jack 8 is provided on the screw jack 8. A screw connecting flange 9 is provided at one end of the screw 11. A sliding sleeve 78 is provided between the sliding sleeve positioning channel steels 83. A sliding tensioner 10 is fitted on the sliding sleeve 78. The tensioner 10 is connected to the screw connecting flange 9 at the middle of one side. A channel steel platform reinforcing tube 79 is provided in the middle of the interior of the sliding tensioner 10. There are five pulley shaft assemblies 20 in total. Two of the pulley shaft assemblies 20 are located on both sides below the top frame 82, one of the pulley shaft assemblies 20 is located in the middle above the top frame 82, and the remaining two pulley shaft assemblies 20 are located on both sides above the sliding tensioner 10. A column sleeve 96 is fitted on the column 95. A column sleeve fixing plate 97 is provided on the column sleeve 96. A column embedded plate 98 is provided at the lower end of the column 95. The top frame... A cargo platform 66 is provided below the frame 82. The cargo platform 66 is connected to the column sleeve 96 via the column sleeve fixing plate 97. A limit block 60 is provided on one inner wall of the cargo platform 66. A rotating shaft 61 is provided on the side of the cargo platform 66 near the limit block 60. A rotating platform 62 is provided on the rotating shaft 61. An automatic lifting railing assembly 63 is provided on the side of the cargo platform 66 near the limit block 60. A hook upright plate 30 is provided on the upper side of the cargo platform 66 near the column sleeve 96. A wire rope end fixing station plate 39 is provided on the upper side of the top frame 82 away from the motor 1.

[0025] The pulley shaft assembly 20 includes: a pulley shaft fixing plate 201, two of which are provided. A pulley shaft 202 is provided above the pulley shaft fixing plate 201. A pulley 203 is provided at both ends of the pulley shaft 202. A bearing is provided inside the pulley 203. The pulley 203 is sleeved on both ends of the pulley shaft 202 through the bearing.

[0026] The pulley 203 is equipped with a wire rope 32, and the two ends of the wire rope 32 are equipped with rope tensioners 31. The wire rope 32 is connected to the hook upright plate 30 and the wire rope end fixing station plate 39 respectively through the rope tensioners 31.

[0027] The automatic lifting guardrail assembly 63 includes a support rod 631 and a top rod 633. A guardrail 632 is provided above the support rod 631. The support rod 631 and the guardrail 632 are movably connected. A limit plate 634 is provided on the top rod 633. There are two limit plates 634. The support rod 631 is located on both sides of the cargo platform 66. The top rod 633 passes through the cargo platform 66, and the limit plates 634 are located on both sides of the cargo platform 66.

[0028] Example 1

[0029] Start motor 1, which drives the connecting shaft 4 to rotate. Then, the V-belt 7 drives the screw jack 8 to move. The movement of the screw jack 8 causes the sliding tensioner 10 to move linearly. The movement of the sliding tensioner 10 causes the pulley shaft assembly 20 on the sliding tensioner 10 to move, thereby causing the wire rope 32 to move up and down, thus moving the cargo platform 66 up and down.

[0030] When the cargo platform 66 rises, one side of the slewing platform 62 falls under its own weight and then rotates around the slewing axis 61. When it hits the limit block 60, the slewing platform 62 forms a 30-degree angle with the cargo platform 66, thus preventing accidents. The top rod 633 also falls under its own weight, and then it is restricted by the limit plate 634, preventing it from falling further and keeping the railing 632 horizontal. When the cargo platform 66 rises and falls, the slewing platform 62 is pushed back to its previous position by the bottom surface. After the lower end of the top rod 633 touches the bottom surface, the upper end of the top rod 633 pushes open the railing 632, lifting it up. This facilitates personnel access and ensures the safety of operators during operation, and also prevents the truck from slipping, thus avoiding accidents. Because one side of the top rod 633 is inclined, this allows the railing 632 to tilt backward at a certain angle periodically.

[0031] Example 2

[0032] refer to Figure 9 and Figure 10 According to the actual use, the present invention connects the rotating shaft of the motor 1 to one end of the lead screw 11 through the flexible coupling 3, and then replaces the copper nut 901 in the middle of one side of the sliding tensioner, and then fixes it with the copper nut fixing plate 101. Then the motor 1 is started, and the motor 1 drives the lead screw 11 to rotate, so that the copper nut 901 moves linearly on the lead screw 11, and the sliding tensioner 10 moves linearly. One end of the lead screw 11 will enter the interior of the channel steel platform reinforcing tube 79, and then the cargo platform 66 is lifted using the same raw materials as in Embodiment 1.

[0033] refer to Figure 1 The way the wire rope 32 is wound on the pulley assembly 20 is determined by the formula: S = hn (S = distance the free end of the rope moves, h = height the weight is lifted, n = number of rope segments). Therefore, the pulley assembly uses two rope segments to suspend the object. The force required to lift the object moves a distance twice the distance the object moves. The lead screw 11 pulls the sliding tensioner 10 to move 1 meter, lifting the cargo platform 66 2 meters. When the cargo platform 66 falls, the motor 1 reverses, causing the sliding tensioner 10 to move backward. The cargo platform 66, relying on its own weight, constantly tightens the wire rope, causing it to descend.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel hoist, characterized in that, include: The pulley shaft assembly (20) and the column (95) are provided. The upper end of the column (95) is provided with a column fixing connection plate (81). The upper end of the column (95) is provided with a top frame (82). The lower part of the top frame (82) is provided with a top frame fixing connection plate (80). The top frame fixing connection plate (80) and the column fixing connection plate (81) are connected by bolts. The top of the top frame (82) is provided with a sliding sleeve positioning channel steel (83). The top of one side of the top frame (82) is provided with a motor plate (77). The top of the motor plate (77) is provided with a motor (1). The rotating shaft of the motor (1) is provided with a... A pulley (2) is provided on the shaft of the motor (1), a flexible coupling (3) is provided on the shaft of the motor (1), a bearing seat (5) is provided on the top frame (82), a connecting shaft (4) is provided inside the bearing seat (5), a pulley (2) is also provided on the connecting shaft (4), one end of the connecting shaft (4) away from the bearing seat (5) is connected to the shaft of the motor (1) through the flexible coupling (3), a V-belt (7) is fitted on the pulley (2), a screw jack (8) is provided in the middle of one side of the sliding sleeve positioning channel steel (83), a screw jack (11) is provided on the screw jack (8), and one end of the screw jack (11) is provided with a screw jack (11). A screw-connecting flange (9) is provided, and a sliding sleeve (78) is provided between the sliding sleeve positioning channel steel (83). A sliding tensioner (10) is fitted on the sliding sleeve (78). The middle of one side of the sliding tensioner (10) is connected to the screw-connecting flange (9). A channel steel platform reinforcing tube (79) is provided in the middle of the interior of the sliding tensioner (10). A total of five pulley shaft assemblies (20) are provided. Two of the pulley shaft assemblies (20) are located on both sides below the top frame (82), one of the pulley shaft assemblies (20) is located in the middle of the top frame (82), and the remaining two pulley shaft assemblies are located in the middle of the top frame (82). The assembly (20) is located on both sides above the sliding tensioner (10). A column sleeve (96) is fitted on the column (95), and a column sleeve fixing plate (97) is provided on the column sleeve (96). A column embedded plate (98) is provided at the lower end of the column (95). A cargo platform (66) is provided below the top frame (82). The cargo platform (66) is connected to the column sleeve (96) through the column sleeve fixing plate (97). A limit block (60) is provided on one inner wall of the cargo platform (66), and a rotating shaft (61) is provided on the side of the cargo platform (66) near the limit block (60).A rotary platform (62) is provided on the rotary shaft (61). An automatic lifting railing assembly (63) is provided on the side of the cargo platform (66) near the limiting block (60). A hook plate (30) is provided on the upper side of the cargo platform (66) near the column sleeve (96). A hook plate fixing plate (33) is provided below the hook plate (30). A fixing plate reinforcing plate (34) is provided below the hook plate fixing plate (33). A wire rope end fixing station plate (39) is provided on the upper side of the top frame (82) away from the motor (1). The pulley shaft assembly (20) includes: a pulley shaft fixing plate (201), two of which are provided; a pulley shaft (202) is provided above the pulley shaft fixing plate (201); pulleys (203) are provided at both ends of the pulley shaft (202); bearings are provided inside the pulleys (203); and the pulleys (203) are sleeved at both ends of the pulley shaft (202) through the bearings. A steel wire rope (32) is provided on the pulley (203), and a tensioner (31) is provided at both ends of the steel wire rope (32). The steel wire rope (32) is connected to the hook upright plate (30) and the steel wire rope end fixing station plate (39) respectively through the tensioner (31). The automatic lifting guardrail assembly (63) includes: a support rod (631) and a top rod (633). A guardrail (632) is provided above the support rod (631). The support rod (631) and the guardrail (632) are movably connected. A limit plate (634) is provided on the top rod (633). There are two limit plates (634). The support rod (631) is located on both sides of the cargo platform (66). The top rod (633) passes through the cargo platform (66), and the limit plates (634) are located on both sides of the cargo platform (66).

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