Anti-tilt safety device for heavy-duty freight elevator

Abstract

This invention relates to the field of mechanical safety, and to a safety device for preventing tilting of a heavy-duty freight elevator. The device includes a freight elevator car body, a groove on the bottom inner wall of the car body, a gear rotatably connected to the central axis of the groove via a rotating shaft, a first sliding groove on the rear inner wall of the car body, and a fixing ring fixedly connected to the bottom outer wall of the car body. The top inner walls of the two fixing rings are fixedly connected to the same first fixing shaft. This invention provides a safety device to prevent tilting of a heavy-duty freight elevator. When heavy goods are transported vertically in the elevator, if the goods are not centered in the car body, the car body may shift. When one side of the car body shifts, it tilts to that side. The tilting car body compresses the stabilizing device, causing the stabilizing device on the compressed side to exert additional support force on the car body, thus providing support during operation.

Description

Technical Field

[0001] This invention relates to the field of machining technology, specifically to a safety device for preventing tilting of a heavy-duty freight elevator. Background Technology

[0002] Freight elevators are mainly used for transporting goods between various work levels; lifting cars between floors in multi-level parking garages and underground parking lots, etc. The product's hydraulic system is equipped with anti-fall and overload safety protection devices. Operating buttons can be installed on each floor and the lifting platform's work surface for multi-point control. The product has a robust structure, large load capacity, smooth lifting, and is simple and convenient to install and maintain. It is an economical and practical alternative to elevators for transporting goods between low floors. Hydraulic lifting platforms specially designed to meet various special requirements can achieve better matching and compatibility with other equipment under special working conditions. Load capacity refers to the maximum total weight of passengers, cargo, fuel, fresh water, and consumable supplies that a ship is allowed to carry.

[0003] Patent application number 201920133780.5 discloses a safety device for preventing tilting of a heavy-duty freight elevator. Most freight elevator cars use brackets to support the bottom of the elevator. When the goods inside the freight elevator are not at the center of gravity, the elevator may tilt during operation due to the unstable center of gravity, which will affect the stability of the freight elevator during operation and pose a safety hazard in the long run.

[0004] Therefore, we propose a safety device to prevent tilting of heavy-duty freight elevators. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a safety device for preventing tilting of a heavy-duty freight elevator, comprising a freight elevator body, a groove formed on the bottom inner wall of the freight elevator body, a gear rotatably connected to the central axis of the groove via a rotating shaft, two first sliding grooves formed on the rear inner wall of the freight elevator body, the two first sliding grooves being symmetrically arranged about the central axis of the freight elevator body, two fixing rings fixedly connected to the bottom outer wall of the freight elevator body, the two fixing rings being symmetrically arranged about the central axis of the freight elevator body, the same first fixing shaft fixedly connected to the top inner wall of the two fixing rings, and first fixing blocks fixedly connected to the left and right outer walls of the freight elevator body, and further comprising:

[0006] The stabilizing device includes a second arc-shaped rod fixedly connected to the outer wall of the freight elevator car. A second fixed shaft is fixedly connected to the inner wall of the second arc-shaped rod. A second force-bearing plate is provided on the right side of the second arc-shaped rod. The inner wall of the second force-bearing plate is rotatably connected to the second arc-shaped plate through a rotating shaft. The inner wall of the second arc-shaped plate is rotatably connected to the second fixed shaft. There are four second arc-shaped rods, which are symmetrically arranged about the central axis of the freight elevator car.

[0007] According to the above technical solution, a second spring is fixedly connected to the inner wall of the second force plate, and the end of the second spring away from the second force plate is fixedly connected to the first fixing block. A second fixing block is fixedly connected to the outer wall of the second arc-shaped rod. There are two second fixing blocks, which are symmetrically mirrored about the central axis of the second arc-shaped rod. The right side of the second arc-shaped plate is set as an arc shape, and the right side of the second arc-shaped plate is elastically connected to the freight elevator car body.

[0008] According to the above technical solution, a support frame is fixedly connected to the bottom of the second fixing block located on the lower side, a fixing plate is provided on the top of the support frame, a third elastic component is fixedly connected to the bottom of the fixing plate, a first spring is fixedly connected to the top left side of the fixing plate, the end of the first spring away from the fixing plate is fixedly connected to the bottom of the freight elevator car, the right side of the fixing plate is rotatably connected to the first fixing shaft, the left side of the fixing plate is inclined at a certain angle to the support frame, and the right side of the fixing plate is slidably connected in the second sliding groove of the first arc plate through a rotating shaft.

[0009] According to the above technical solution, the inner wall of the fixed ring is rotatably connected to a first arc-shaped plate via a rotating shaft. The inner wall of the first arc-shaped plate has a through hole, and the inner wall of the through hole has a second sliding groove. The top outer wall of the first arc-shaped plate is fixedly connected to a second elastic component. The first arc-shaped plate moves relative to the right side of the fixed plate by sliding.

[0010] According to the above technical solution, a first force-bearing plate is provided at the top of the groove, a first arc-shaped elastic plate is fixedly connected to the outer wall of the first force-bearing plate, a first sliding block is fixedly connected to the bottom of the first arc-shaped elastic plate, the first sliding block is slidably connected in the groove, and there are two first arc-shaped elastic rods, which are symmetrically arranged about the central axis of the first force-bearing plate.

[0011] According to the above technical solution, a first arc-shaped rod is fixedly connected to the inner wall of the first sliding block, and two first arc-shaped rods are slidably connected to each other on their inner walls. The inner wall of the first arc-shaped rod is fully meshed with the gear. A second arc-shaped elastic plate is fixedly connected to the left outer wall of the first force plate. The end of the second arc-shaped elastic plate away from the first force plate is elastically connected to the bottom inner wall of the freight elevator car. When the first sliding block on one side slides, the first arc-shaped rod on one side causes the gear to rotate through the meshing relationship, and the gear causes the first sliding block on the other side to move relative to it.

[0012] According to the above technical solution, a second sliding block is provided on the right side of the first force-bearing plate. The second sliding block is slidably connected in the first sliding groove. A first elastic component is fixedly connected to the bottom of the second sliding block. There are two first elastic components, which are symmetrically arranged about the central axis of the second sliding block. The end of the first elastic component away from the second sliding block is fixedly connected to the bottom of the groove. A support block is fixedly connected to the outer wall of the second sliding block. The end of the support block away from the second sliding block is fixedly connected to the bottom of the first force-bearing block. When the first force-bearing plate is subjected to pressure and moves downward, the first elastic component is pressed down under pressure.

[0013] This invention provides a safety device for preventing tilting of a heavy-duty freight elevator, which has the following advantages:

[0014] (1) The present invention provides a safety device for preventing tilting of a heavy-duty freight elevator. When heavy goods are transported vertically in the elevator, if the goods are not placed in the center of the elevator car, the elevator car may shift. When one side of the elevator car shifts, the elevator car will tilt to one side. The tilted elevator car will squeeze the stabilizing device, so that the stabilizing device on the squeezed side will apply additional support force to the elevator car, thus supporting the elevator car during operation.

[0015] (2) By providing a first force plate, the first force plate supports the bottom of the vehicle carrying the heavy goods during the vertical transportation of heavy goods. When one side of the first force plate is pressed down, the first force plate presses down on the first sliding block to slide in the groove. The gear causes the first sliding block on the opposite side to move in the opposite direction, so that the first force plate always remains in a horizontal state.

[0016] (3) By providing a stabilizing device, when the goods are moved into the elevator car body, when the left side of the elevator car body is pressed down by gravity, the left side of the fixing plate moves downward and slides upward through the right side of the fixing plate in the second sliding groove of the inner wall of the first arc plate. The first arc plate moves towards the side of the elevator car body and supports the elevator car body through the contact of the second elastic component.

[0017] (4) By providing a second arc-shaped rod, when the center of gravity of the freight elevator car is unstable and one side of the freight elevator car tilts, the first fixing block fixedly connected to the outer wall of the freight elevator car compresses the second spring. By pressing down the second force plate, the second arc-shaped plates on both sides provide additional support to the outer wall of the freight elevator car. The second fixing block fixedly connected to the outer wall of the second arc-shaped rod provides stability to the left and right sides of the freight elevator car. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall front structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the cargo elevator body structure of the present invention;

[0020] Figure 3 For the present invention Figure 1 A magnified structural diagram of A in the middle;

[0021] Figure 4 This is a schematic diagram of the first load-bearing plate structure of the present invention;

[0022] Figure 5 For the present invention Figure 2 A magnified structural diagram of B in the diagram;

[0023] Figure 6 This is a schematic diagram of the stabilization device structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the first arc-shaped plate and the fixing plate structure of the present invention;

[0025] Figure 8 This is a schematic diagram of the second arc-shaped rod structure of the present invention.

[0026] In the diagram: 1. Elevator body; 101. Groove; 102. First sliding groove; 103. Gear; 104. Fixing ring; 105. First fixing shaft; 106. First fixing block; 2. First force-bearing plate; 201. First arc-shaped spring plate; 202. First sliding block; 203. First arc-shaped rod; 204. Second sliding block; 205. First elastic component; 206. Support block; 207. Second arc-shaped spring plate; 3. Stabilizing device; 301. First arc-shaped plate; 3011. Through hole; 3012. Second sliding groove; 3013. Second elastic component; 302. Fixing plate; 3021. First spring; 3022. Third elastic component; 303. Support frame; 3031. Second fixing block; 304. Second arc-shaped rod; 3041. Second fixing shaft; 3042. Second force-bearing plate; 3043. Second arc-shaped plate; 3044. Second spring. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1: See Figures 1-5 The present invention provides a technical solution: a safety device for preventing tilting of a heavy-duty freight elevator, comprising a freight elevator body 1, a groove 101 formed on the bottom inner wall of the freight elevator body 1, a gear 103 rotatably connected to the central axis of the groove 101 via a rotating shaft, two first sliding grooves 102 formed on the rear inner wall of the freight elevator body 1, the two first sliding grooves 102 being symmetrically arranged about the central axis of the freight elevator body 1, two fixing rings 104 fixedly connected to the bottom outer wall of the freight elevator body 1, the two fixing rings 104 being symmetrically arranged about the central axis of the freight elevator body 1, the same first fixing shaft 105 fixedly connected to the top inner wall of the two fixing rings 104, and first fixing blocks 106 fixedly connected to the left and right outer walls of the freight elevator body 1, and further comprising:

[0029] The stabilizing device 3 includes a second arc-shaped rod 304 fixedly connected to the outer wall of the elevator car 1. A second fixed shaft 3041 is fixedly connected to the inner wall of the second arc-shaped rod 304. A second force-bearing plate 3042 is provided on the right side of the second arc-shaped rod 304. A second arc-shaped plate 3043 is rotatably connected to the inner wall of the second force-bearing plate 3042 via a rotating shaft. The inner wall of the second arc-shaped plate 3043 is rotatably connected to the second fixed shaft 3041. There are four second arc-shaped rods 304, and the four second arc-shaped rods 304 are symmetrical about the central axis of the elevator car 1. This invention provides a safety device to prevent tilting of a heavy-duty freight elevator. When heavy goods are transported vertically in the elevator, if the goods are not centered in the elevator car 1, the elevator car 1 may shift. When one side of the elevator car 1 shifts, the elevator car 1 will tilt to one side. The tilted elevator car 1 squeezes the stabilizing device 3, causing the stabilizing device 3 on the squeezed side to apply additional support force to the elevator car 1, thus supporting the elevator car 1 during operation.

[0030] A first force-bearing plate 2 is provided at the top of the groove 101. A first arc-shaped elastic plate 201 is fixedly connected to the outer wall of the first force-bearing plate 2. A first sliding block 202 is fixedly connected to the bottom of the first arc-shaped elastic plate 201. The first sliding block 202 is slidably connected within the groove 101.

[0031] The inner wall of the first sliding block 202 is fixedly connected to a first arc-shaped rod 203. The two first arc-shaped rods 203 are slidably connected on their respective inner walls. The inner wall of the first arc-shaped rod 203 is fully engaged with the gear 103. The left outer wall of the first force plate 2 is fixedly connected to a second arc-shaped spring plate 207. The end of the second arc-shaped spring plate 207 away from the first force plate 2 is elastically connected to the bottom inner wall of the freight elevator car 1. By setting the first force plate 2, the invention provides support for the bottom of the vehicle carrying the heavy goods during the vertical transportation of heavy goods. When one side of the first force plate 2 is pressed down, the first force plate 2 presses down and the first sliding block 202 slides in the groove 101. The gear 103 causes the first sliding block 202 on the opposite side to move in opposite directions, so that the first force plate 2 always remains in a horizontal state.

[0032] A second sliding block 204 is provided on the right side of the first force-bearing plate 2. The second sliding block 204 is slidably connected in the first sliding groove 102. A first elastic component 205 is fixedly connected to the bottom of the second sliding block 204. There are two first elastic components 205, which are symmetrically arranged about the central axis of the second sliding block 204. The end of the first elastic component 205 away from the second sliding block 204 is fixedly connected to the bottom of the groove 101. A support block 206 is fixedly connected to the outer wall of the second sliding block 204. The end of the support block 206 away from the second sliding block 204 is fixedly connected to the bottom of the first force-bearing block. When a heavy cargo is sent into the freight elevator, the first force-bearing plate 2 supports the bottom of the carrier carrying the cargo. The first elastic component 205 at the bottom of the first sliding block 202 presses down, causing the first force-bearing plate 2 to move downward when it contacts the carrier. The sliding connection of the first sliding block 202 in the groove 101 keeps the carrier side of the first force-bearing plate 2 balanced.

[0033] Example 2: Please refer to Figures 6-8Based on Embodiment 1, the present invention provides the following technical solution: A second spring 3044 is fixedly connected to the inner wall of the second force-bearing plate 3042; the end of the second spring 3044 away from the second force-bearing plate 3042 is fixedly connected to the first fixing block 106; a second fixing block 3031 is fixedly connected to the outer wall of the second arc-shaped rod 304; there are two second fixing blocks 3031, and the two second fixing blocks 3031 are symmetrically mirrored about the central axis of the second arc-shaped rod 304. This invention incorporates a second arc-shaped rod 304. When the center of gravity of the elevator car 1 is unstable and one side of the elevator car 1 tilts, the first fixing block 106, fixedly connected to the outer wall of the elevator car 1, compresses the second spring 3044. This causes the second force plate 3042 to press down, and the second arc-shaped plates 3043 on both sides provide additional support to the outer wall of the elevator car 1. The second fixing block 3031, fixedly connected to the outer wall of the second arc-shaped rod 304, stabilizes the left and right sides of the elevator car 1. During the vertical operation of the elevator car 1, the second fixing blocks 3031 on both sides slide up and down along the I-beam. When the elevator car 1 tilts to one side, the first fixing block 106 on the outer wall of the elevator car 1 compresses the second force plate 3042. After compression, the second force plate 3042 applies additional support force to the elevator car 1 through the second arc-shaped plates 3043 on both sides, preventing the elevator car 1 from continuously tilting during operation.

[0034] A support frame 303 is fixedly connected to the bottom of the second fixing block 3031 located on the lower side. A fixing plate 302 is provided on the top of the support frame 303. A third elastic component 3022 is fixedly connected to the bottom of the fixing plate 302. A first spring 3021 is fixedly connected to the top left side of the fixing plate 302. The end of the first spring 3021 away from the fixing plate 302 is fixedly connected to the bottom of the freight elevator car 1. The right side of the fixing plate 302 is rotatably connected to the first fixing shaft 105. By setting a stabilizing device 3, when the goods are moved into the freight elevator car 1, when the left side of the freight elevator car 1 is pressed down by gravity, the left side of the fixing plate 302 moves downward. When the right side of the fixing plate 302 slides upward in the second sliding groove 3012 on the inner wall of the first arc plate 301, the first arc plate 301 moves toward one side of the freight elevator car 1. The second elastic component 3013 contacts the freight elevator car 1, thus supporting the freight elevator car 1.

[0035] The inner wall of the fixed ring 104 is rotatably connected to the first arc plate 301 via a rotating shaft. The inner wall of the first arc plate 301 has a through hole 3011, and the inner wall of the through hole 3011 has a second sliding groove 3012. The top outer wall of the first arc plate 301 is fixedly connected to the second elastic component 3013. When the goods are being loaded, the left side of the elevator car 1 is pressed down under the pressure of the goods. Through the pressure of the elevator car 1 on the left side of the fixed plate 302, the right side of the fixed plate 302, under the action of the first fixed shaft 105, pushes the first arc plate 301 toward one side of the elevator car 1, which provides support for the rear of the elevator car 1.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A safety device for preventing tilting of a heavy-duty freight elevator, comprising a freight elevator body (1), wherein a groove (101) is provided on the bottom inner wall of the freight elevator body (1), and a gear (103) is rotatably connected to the central axis of the groove (101) via a rotating shaft; a first sliding groove (102) is provided on the rear inner wall of the freight elevator body (1), wherein there are two first sliding grooves (102), which are symmetrically arranged about the central axis of the freight elevator body (1); a fixing ring (104) is fixedly connected to the bottom outer wall of the freight elevator body (1), wherein there are two fixing rings (104), which are symmetrically arranged about the central axis of the freight elevator body (1); the same first fixing shaft (105) is fixedly connected to the top inner wall of the two fixing rings (104); and first fixing blocks (106) are fixedly connected to the left and right outer walls of the freight elevator body (1), characterized in that, Also includes: The stabilizing device (3) includes a second arc-shaped rod (304) fixedly connected to the outer wall of the elevator car (1). The inner wall of the second arc-shaped rod (304) is fixedly connected to a second fixed shaft (3041). A second force plate (3042) is provided on the right side of the second arc-shaped rod (304). The inner wall of the second force plate (3042) is rotatably connected to a second arc-shaped plate (3043) via a rotating shaft. The inner wall of the second arc-shaped plate (3043) is rotatably connected to the second fixed shaft (3041). There are four second arc-shaped rods (304), and the four second arc-shaped rods (304) are symmetrically arranged about the central axis of the elevator car (1).

2. The anti-tilting safety device for a heavy-duty freight elevator according to claim 1, characterized in that: A second spring (3044) is fixedly connected to the inner wall of the second force plate (3042). The end of the second spring (3044) away from the second force plate (3042) is fixedly connected to the first fixing block (106). A second fixing block (3031) is fixedly connected to the outer wall of the second arc rod (304). There are two second fixing blocks (3031). The two second fixing blocks (3031) are symmetrically mirrored about the central axis of the second arc rod (304).

3. The anti-tilting safety device for a heavy-duty freight elevator according to claim 2, characterized in that: The bottom of the second fixing block (3031) located on the lower side is fixedly connected to a support frame (303). The top of the support frame (303) is provided with a fixing plate (302). The bottom of the fixing plate (302) is fixedly connected to a third elastic component (3022). The top left side of the fixing plate (302) is fixedly connected to a first spring (3021). The end of the first spring (3021) away from the fixing plate (302) is fixedly connected to the bottom of the freight elevator car (1). The right side of the fixing plate (302) is rotatably connected to the first fixing shaft (105).

4. The anti-tilting safety device for a heavy-duty freight elevator according to claim 1, characterized in that: The inner wall of the fixed ring (104) is rotatably connected to a first arc plate (301) via a rotating shaft. The inner wall of the first arc plate (301) is provided with a through hole (3011), and the inner wall of the through hole (3011) is provided with a second sliding groove (3012). The top outer wall of the first arc plate (301) is fixedly connected to a second elastic component (3013).

5. The anti-tilting safety device for a heavy-duty freight elevator according to claim 1, characterized in that: The top of the groove (101) is provided with a first force plate (2), the outer wall of the first force plate (2) is fixedly connected with a first arc-shaped spring plate (201), the bottom of the first arc-shaped spring plate (201) is fixedly connected with a first sliding block (202), and the first sliding block (202) is slidably connected in the groove (101).

6. The anti-tilting safety device for a heavy-duty freight elevator according to claim 5, characterized in that: The inner wall of the first sliding block (202) is fixedly connected to a first arc-shaped rod (203), and the two first arc-shaped rods (203) are slidably connected on their respective inner walls. The inner wall of the first arc-shaped rod (203) is fully meshed with the gear (103). The left outer wall of the first force plate (2) is fixedly connected to a second arc-shaped elastic plate (207), and the end of the second arc-shaped elastic plate (207) away from the first force plate (2) is elastically connected to the bottom inner wall of the freight elevator car body (1).

7. The anti-tilting safety device for a heavy-duty freight elevator according to claim 5, characterized in that: A second sliding block (204) is provided on the right side of the first force plate (2). The second sliding block (204) is slidably connected in the first sliding groove (102). A first elastic component (205) is fixedly connected to the bottom of the second sliding block (204). There are two first elastic components (205). The two first elastic components (205) are symmetrically arranged about the central axis of the second sliding block (204). The end of the first elastic component (205) away from the second sliding block (204) is fixedly connected to the bottom of the groove (101). A support block (206) is fixedly connected to the outer wall of the second sliding block (204). The end of the support block (206) away from the second sliding block (204) is fixedly connected to the bottom of the first force plate.

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