A quick locking assembly of an elevating platform, a locking device and a working method

Abstract

The embodiment of the application provides a kind of lifting platform quick locking assembly, locking device and operation method, wherein locking assembly includes support component, bearing crossbeam and locking component;Support component includes support vertical beam, and the same side middle part and bottom of support vertical beam are respectively provided with first crossbeam and second crossbeam in parallel;Bearing crossbeam is rotatably arranged between first crossbeam and second crossbeam;Bearing crossbeam is hollow, and the top and bottom of the end of bearing crossbeam extending support component are correspondingly provided with first through hole in vertical direction;Locking component includes screw, and the top of screw is connected with movable wedge-shaped block, and the bottom of screw is sequentially threaded first through hole of bearing crossbeam top and bottom and then extends outside bearing crossbeam;With the beneficial effects of being able to quickly lock and quickly release the lifting platform, improve construction efficiency, more safe and reliable;It is applicable to the field of lifting platform locking device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of lifting platform locking device, in particular to a lifting platform quick locking assembly, a locking device and a working method. BACKGROUND

[0002] The lifting platform is an important part of the present traffic maintenance equipment, and is widely used in tunnel, bridge and other maintenance equipment. The existing lifting platform usually adopts hydraulic, hinge and other ways to realize the lifting function. However, when the platform needs to be kept in the raised state for a long time, and the raised platform needs to bear large vertical and horizontal loads, the hydraulic lifting driving assembly needs to be kept in the raised state for a long time and bear load for a long time. Not only the resources are wasted, but also the probability of failure is greatly increased, which has great safety hazards.

[0003] In order to solve the above problems, some people use pin shaft or bolt to fix, but the pin shaft cannot resist horizontal load; and the bolt needs a long time to install and remove, which is not conducive to rapid construction. SUMMARY

[0004] In order to solve one of the above technical defects, the present application provides a lifting platform quick locking assembly, a locking device and a working method.

[0005] According to a first aspect of the present application, a lifting platform quick locking assembly is provided, comprising: a support component, a bearing cross beam and a locking component; the support component comprises a support vertical beam, and a first cross beam and a second cross beam are respectively arranged in parallel on the same side of the middle part and the bottom part of the support vertical beam; the bearing cross beam is rotatably arranged between the first cross beam and the second cross beam; the bearing cross beam is hollow, and the top and bottom of the end of the bearing cross beam extending out of the support component are correspondingly provided with first through holes in the vertical direction; the locking component comprises a screw rod, and a movable wedge-shaped block is connected to the upper part of the screw rod; the bottom part of the screw rod extends out of the outside of the bearing cross beam after sequentially penetrating the first through holes of the top and bottom of the bearing cross beam.

[0006] Preferably, a rotating sleeve is arranged in the inside of the bearing cross beam, a first threaded hole is arranged on the rotating sleeve in the vertical direction, and rotating longitudinal shafts are arranged on both sides of the rotating sleeve; the first threaded hole corresponds to the screw rod in the vertical direction, the bottom part of the screw rod is threadedly connected with the first threaded hole after penetrating the first through hole of the top of the bearing cross beam, and then penetrates the first through hole of the bottom of the bearing cross beam; the two rotating longitudinal shafts extend out of the outside of the bearing cross beam after penetrating the side walls of the bearing cross beam.

[0007] More preferably, it also includes a rotating shaft, the bottom of which passes through the first crossbeam, one end of the bearing crossbeam near the supporting vertical beam, and the second crossbeam in sequence, and is then threadedly connected to the first nut.

[0008] Preferably, the first through hole is an oblong through hole, and its length direction is arranged laterally.

[0009] Preferably, the top of the screw is provided with a spherical connector, the lower part of the spherical connector is connected to a retaining plate, the middle part of the retaining plate is provided with a second through hole, the diameter of the second through hole is smaller than the diameter of the spherical connector; the retaining plate is bolted to the bottom of the movable wedge block; the bottom of the movable wedge block is provided with a groove in the middle, the groove is adapted to the top of the spherical connector, so that the top of the spherical connector can rotate within the groove.

[0010] Preferably, the bottom of the screw is provided with a rotating handle.

[0011] According to a second aspect of the embodiments of this application, a quick locking device for a lifting platform is provided, comprising: a fixed platform and a lifting platform, wherein the fixed platform and the lifting platform are connected together by a lifting drive assembly; the locking device further comprises at least one locking component as described in any of the above claims; a fixed wedge block corresponding to the number and position of the locking components is provided on the lower part of the lifting platform; the upper part of the support beam is connected to the upper part of the fixed platform, and the movable wedge block abuts against the fixed wedge block.

[0012] Preferably, at least one set of limiting blocks is provided at the top of the fixed platform and at the bottom of the lifting platform.

[0013] According to a third aspect of the embodiments of this application, a method for operating a quick locking device for a lifting platform is provided, wherein the locking operation of the locking device includes the following steps:

[0014] S10, Install the locking assembly;

[0015] S101 connects the upper part of the support beam to the upper part of the fixed platform;

[0016] S102, rotate the bearing beam so that it is at a certain angle relative to the first beam, so that the locking component leaves a gap between itself and the fixed wedge block in the horizontal direction;

[0017] S20, start the lifting drive component, the lifting drive component drives the lifting platform to rise;

[0018] S30, after the lifting platform rises to the designated height, the locking assembly locks the lifting platform;

[0019] S301, rotate the load-bearing crossbeam so that the load-bearing crossbeam is parallel to the first crossbeam;

[0020] S302, rotate the screw upwards to raise the movable wedge block connected above the screw; stop rotating the screw when the movable wedge block is pressed against the fixed wedge block set at the bottom of the lifting platform;

[0021] S40, disable the lift drive component.

[0022] Preferably, the unlocking operation of the locking device includes the following steps:

[0023] S50, activate the lifting drive assembly;

[0024] S60, rotate the screw downwards to lower the movable wedge block connected above the screw by a certain height;

[0025] S70, rotate the load-bearing crossbeam so that it is at a certain angle relative to the first crossbeam, so that the locking component leaves a gap between itself and the fixed wedge block in the horizontal direction;

[0026] S80, the lifting drive assembly lowers the lifting platform to a specified height;

[0027] S90, removes the support beam from the fixed platform.

[0028] The support component provided in this embodiment supports the entire locking assembly; the load-bearing beam can drive the locking component to rotate around the support assembly, placing the locking component in a working position and a non-working position; the screw drives the movable wedge block to rise and fall, thereby locking and unlocking the lifting platform. When the lifting platform is raised, the locking assembly can quickly lock and bear vertical and horizontal loads; when the lifting platform needs to be lowered, it can quickly unlock, effectively improving construction efficiency and reducing construction costs. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0030] Figure 1 This is a structural schematic diagram of a quick-locking assembly for a lifting platform provided in Embodiment 1 of this application;

[0031] Figure 2 This is a schematic diagram of the structure of a support component for a quick-locking assembly of a lifting platform provided in Embodiment 1 of this application;

[0032] Figure 3This is another structural schematic diagram of a quick-locking assembly for a lifting platform provided in Embodiment 1 of this application;

[0033] Figure 4 This is a schematic diagram of the load-bearing crossbeam of a quick-locking assembly for a lifting platform provided in Embodiment 1 of this application;

[0034] Figure 5 This is a schematic diagram of the rotating sleeve of a quick-locking assembly for a lifting platform provided in Embodiment 1 of this application;

[0035] Figure 6 A cross-sectional view of a quick-locking assembly for a lifting platform provided in Embodiment 1 of this application;

[0036] Figure 7 This is a schematic diagram of the screw structure of a quick-locking assembly for a lifting platform provided in Embodiment 1 of this application;

[0037] Figure 8 This is a schematic diagram of the non-working state of a quick-locking assembly for a lifting platform provided in Embodiment 1 of this application;

[0038] Figure 9 This is a structural schematic diagram of another non-working state of a quick-locking assembly for a lifting platform provided in Embodiment 1 of this application;

[0039] Figure 10 This is a schematic diagram of the lifting platform in its highest position, as provided in Embodiment 2 of this application, for a quick-locking device for a lifting platform.

[0040] Figure 11 for Figure 10 Enlarged view of part B in the image;

[0041] Figure 12 A flowchart illustrating the locking operation of a quick-locking device for a lifting platform, provided in Embodiment 3 of this application;

[0042] Figure 13 This is a flowchart illustrating step S10 of the operation method of a quick locking device for a lifting platform provided in Embodiment 3 of this application;

[0043] Figure 14 This is a flowchart illustrating step S30 of the operation method of a quick locking device for a lifting platform provided in Embodiment 3 of this application;

[0044] Figure 15 This application provides a schematic diagram of a lifting platform in its lowest position as part of a quick-locking device for a lifting platform.

[0045] Figure 16This application provides a schematic diagram illustrating the state of a lifting platform during its ascent or descent using a quick-locking device for a lifting platform.

[0046] Figure 17 for Figure 16 Enlarged view of part A in the image;

[0047] Figure 18 This application provides a flowchart of the unlocking operation of a locking device for a lifting platform quick locking device, as shown in Embodiment 3 of this application.

[0048] In the picture:

[0049] 10 is a supporting component, 20 is a load-bearing crossbeam, 30 is a locking component, 40 is a rotating sleeve, 50 is a rotating shaft, 60 is a first nut, 70 is a fixed platform, 80 is a lifting platform, 90 is a lifting drive assembly, 100 is a fixed wedge block, 110 is a limiting block, 101 is a supporting vertical beam, 102 is a first crossbeam, 103 is a second crossbeam, 201 is a first through hole, 301 is a screw, 302 is a movable wedge block, 303 is a clamping plate, 401 is a first threaded hole, 402 is a rotating longitudinal shaft, 3011 is a spherical connector, and 3012 is a rotating handle. Detailed Implementation

[0050] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0051] In the process of developing this application, the inventors discovered that providing a lifting platform that can quickly lock and bear vertical and horizontal loads after being raised, and can quickly release the lock when the lifting platform needs to be lowered, thereby improving construction efficiency, enhancing safety, reducing construction costs, and realizing a low-carbon and environmentally friendly lifting platform quick-locking component, is a technical problem that urgently needs to be solved by those skilled in the art.

[0052] Example 1

[0053] Figure 1 This is a structural schematic diagram of a quick-locking assembly for a lifting platform provided in Embodiment 1 of this application. Figure 2 This is a structural schematic diagram of the support component of a quick-locking assembly for a lifting platform provided in Embodiment 1 of this application. Figure 3 This is another structural schematic diagram of a quick-locking assembly for a lifting platform provided in Embodiment 1 of this application. Figure 4 This is a schematic diagram of the load-bearing crossbeam of a quick-locking assembly for a lifting platform provided in Embodiment 1 of this application, as shown below.Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, to address the aforementioned problems, this application provides a quick-locking assembly for a lifting platform, comprising: a support component 10, a load-bearing crossbeam 20, and a locking component 30. Specifically, both the support component 10 and the load-bearing crossbeam 20 are hollow internal structures assembled and welded from steel plates; the support component 10 is inverted F-shaped and includes a support vertical beam 101, with a first crossbeam 102 and a second crossbeam 103 arranged parallel to each other on the same side of the support vertical beam 101 at the middle and bottom, respectively; the load-bearing crossbeam 20 is rotatable. The support beam 20 is movably positioned between the first crossbeam 102 and the second crossbeam 103. The top and bottom of the end of the support beam 20 extending from the support member 10 are vertically respectively provided with first through holes 201. The first through holes 201 are oblong through holes, extending laterally along their length. The locking member 30 includes a screw 301, with a movable wedge block 302 connected above the screw 301. The bottom of the screw 301 passes through the first through holes 201 at the top and bottom of the support beam 20 and extends outward from the support beam 20. The screw can deflect at a certain angle within the first through hole to adapt to different environmental requirements.

[0054] The support component provided in this embodiment supports the entire locking assembly. The load-bearing beam can drive the locking component to rotate around the support assembly, with a rotation angle of up to 90 degrees, placing the locking component in a working position and a non-working position. The screw drives the movable wedge block to rise and fall, thereby locking and unlocking the lifting platform. When the lifting platform is raised, the locking assembly can quickly lock and bear vertical and horizontal loads. When the lifting platform needs to be lowered, it can quickly unlock, effectively improving construction efficiency and reducing construction costs.

[0055] Furthermore, the bottom of the screw 301 is provided with a third through hole, and a rotating handle 3012 is installed inside the third through hole. Specifically, the diameter of the third through hole is larger than the outer diameter of the rotating handle 3012, and the middle part of the rotating handle 3012 passes through the third through hole. The middle part of the rotating handle can move freely within the third through hole. Rotating the handle horizontally will rotate the screw, realizing the screw's rising and falling. This, in turn, drives the movable wedge block to rise and fall.

[0056] Figure 5 This is a schematic diagram of the rotating sleeve of a quick-locking assembly for a lifting platform provided in Embodiment 1 of this application, as shown below. Figure 5As shown, further, a rotating sleeve 40 is provided inside the bearing beam, and a first threaded hole 401 is provided vertically along the upper edge of the rotating sleeve 40. Rotating longitudinal shafts 402 are provided on both sides of the rotating sleeve 40. The first threaded hole 401 corresponds to the screw 301 in the vertical direction. The bottom of the screw 301 passes through the first through hole 201 at the top of the bearing beam 20 and is threaded to the first threaded hole 401, and then passes through the first through hole 201 at the bottom of the bearing beam 20. The two rotating longitudinal shafts 402 pass through the side wall of the bearing beam 20 and extend out of the bearing beam 20.

[0057] Specifically, during the manufacturing process of the load-bearing beam 20, one side of the web is first welded together with the top and bottom plates. Then, one of the rotating longitudinal shafts 402 of the rotating shaft cylinder 40 passes through a pre-drilled hole in one side of the web. The other side of the web is then welded together, allowing the other rotating longitudinal shaft 402 to pass through a pre-drilled hole in the other side of the web. More specifically, the height of the rotating shaft cylinder 40 is less than the vertical distance between the top and bottom plates of the load-bearing beam 20; the shaft diameter of the rotating longitudinal shaft 402 is less than the diameter of the pre-drilled hole in the web, allowing the rotating shaft cylinder 40 to deflect inside the load-bearing beam 20 under the drive of the screw 301, thus accommodating measurement errors in the actual environment or manufacturing errors in the factory.

[0058] Specifically, the first crossbeam 102 and the second crossbeam 103 are provided with an opening at the end away from the supporting vertical beam 101, so as to facilitate the installation of a second nut that is threadedly connected to the screw 301 in the first crossbeam 102 or the second crossbeam 103, so that the connection between the supporting component 10 and the bearing crossbeam 20 through the screw 301 is more stable.

[0059] Figure 6 This is a cross-sectional view of a quick-locking assembly for a lifting platform provided in Embodiment 1 of this application, as shown below. Figure 6 As shown, further, it also includes a rotating shaft 50. The bottom of the rotating shaft 50 passes through the first crossbeam 102, one end of the bearing crossbeam 20 near the supporting vertical beam 101, and the second crossbeam 103, and is then threadedly connected to the first nut 60. The rotating shaft rotatably connects one end of the bearing crossbeam to the support component, and the support component supports the bearing crossbeam.

[0060] Figure 7 This is a schematic diagram of the screw structure of a quick-locking assembly for a lifting platform provided in Embodiment 1 of this application. Figure 8 This is a structural diagram of a lifting platform quick-locking assembly in its non-working state, provided in Embodiment 1 of this application. Figure 9 This is a structural schematic diagram of another non-working state of a quick-locking assembly for a lifting platform provided in Embodiment 1 of this application, as shown below. Figure 7 , Figure 8 and Figure 9As shown, further, a spherical connector 3011 is provided at the top of the screw 301, and a retaining plate 303 is connected to the lower part of the spherical connector 3011. A second through hole is provided in the middle of the retaining plate 303, and the diameter of the second through hole is smaller than the diameter of the ball of the spherical connector 3011. The retaining plate 303 is bolted to the bottom of the movable wedge block 302. A groove is provided in the middle of the bottom of the movable wedge block 302, and the groove is adapted to the top of the spherical connector 3011, so that the top of the spherical connector 3011 can rotate in the groove. The retaining plate limits the upper part of the spherical connector, so that the upper part of the spherical connector will not fall below the retaining plate, and can rotate in the groove of the movable wedge block, so that the movable wedge block can deflect at a certain angle according to the actual operating environment, thereby locking the lifting platform.

[0061] Example 2

[0062] Figure 10 This is a schematic diagram showing the lifting platform in its highest position, as provided in Embodiment 2 of this application, for a quick-locking device for a lifting platform. Figure 11 for Figure 10 Enlarged view of part B in the image, as shown Figure 10 and Figure 11 As shown, this application embodiment provides a quick locking device for a lifting platform, including: a fixed platform 70 and a lifting platform 80, which are connected together by a lifting drive assembly 90; the locking device further includes at least one locking component as described in any of the above descriptions; the lower part of the lifting platform 80 is provided with fixed wedge blocks 100 corresponding to the number and position of the locking components, and the fixed wedge blocks 100 can be disposed on the outer side of the lower crossbeam of the lifting platform 80; the upper part of the supporting vertical beam 101 is connected to the upper part of the fixed platform 70, and the movable wedge block 302 is in abutting connection with the fixed wedge block 100. Specifically, the upper part of the supporting vertical beam 101 can be connected to the outer side of the upper crossbeam of the fixed platform 70. By locking the lifting platform to the fixed platform with the locking assembly, the lifting drive assembly does not need to be under load for a long time, saving resources, effectively reducing the failure rate of the lifting drive assembly, and making it safer and more environmentally friendly. At the same time, it solves the problem that the horizontal load caused by the use of pin shafts in the prior art cannot be resisted, and the problem that the bolt installation and removal takes a long time and is not conducive to rapid construction.

[0063] Specifically, multiple locking components can be set and evenly distributed on the fixed platform 70. This allows for multiple locking positions to be formed between the fixed platform and the lifting platform, resulting in better locking effect and higher safety.

[0064] Furthermore, at least one set of limiting blocks 110 are correspondingly provided on the top of the fixed platform 70 and the bottom of the lifting platform 80. Specifically, the limiting blocks 110 are vertically positioned on the outer top of the fixed platform 70 and the outer bottom of the lifting platform 80, respectively. The limiting blocks can prevent the lifting platform from over-lifting; in addition, when the lifting platform rises to a specified height, the movable wedge block and the fixed wedge block abut against each other. The movable wedge block provides upward support to the lifting platform, and the limiting blocks prevent the lifting platform from over-lifting and provide downward force to the lifting platform. The movable wedge block and the limiting blocks work together to effectively constrain the vertical movement of the lifting platform.

[0065] Example 3

[0066] Figure 12 This is a flowchart illustrating the locking operation of a quick-locking device for a lifting platform, as provided in Embodiment 3 of this application. Figure 13 This is a flowchart illustrating step S10 of the operating method of a quick locking device for a lifting platform provided in Embodiment 3 of this application. Figure 14 This is a flowchart illustrating step S30 of the operation method of a quick-locking device for a lifting platform provided in Embodiment 3 of this application. Figure 12 , Figure 13 and Figure 14 As shown, Embodiment 3 of this application provides a method for operating a quick-locking device for a lifting platform. The locking operation of the locking device includes the following steps:

[0067] S10, Install the locking assembly;

[0068] S101, connect the upper part of the support beam 101 to the upper part of the fixed platform 70;

[0069] S102, rotate the bearing beam 20 so that it is at a certain angle relative to the first beam 102, so that the locking component 30 leaves a gap between it and the fixed wedge block 100 in the horizontal direction; so that the lifting assembly can rise smoothly;

[0070] S20, start the lifting drive component 90, the lifting drive component 90 drives the lifting platform 80 to rise;

[0071] S30, after the lifting platform 80 rises to the designated height, the locking assembly locks the lifting platform 80;

[0072] S301, rotate the bearing beam 20 so that the bearing beam 20 is parallel to the first beam 102;

[0073] S302, rotate the screw 301 upward to raise the movable wedge block 302 connected above the screw 301; until the movable wedge block 302 abuts against the fixed wedge block 100 set at the lower part of the lifting platform 80, then stop rotating the screw 301.

[0074] S40, disable the lifting drive component 90.

[0075] Figure 15 This is a schematic diagram showing the lifting platform in its lowest position, according to an embodiment of the present application, of a quick-locking device for a lifting platform. Figure 16 This is a schematic diagram illustrating the state of a lifting platform during its ascent or descent, provided in an embodiment of this application, for a quick-locking device for a lifting platform. Figure 17 for Figure 16 Enlarged view of part A in the image, such as Figure 15 , Figure 16 and Figure 17 As shown, by using the above-described locking operation steps, after the lifting platform rises to the specified height, the locking assembly can quickly lock the lifting platform onto the fixed platform and bear the vertical and horizontal loads, so that the lifting drive assembly is in a stress-free state, which can effectively protect the lifting drive assembly and improve the safety and reliability of the locking operation.

[0076] Figure 18 The flowchart of the locking and unlocking operation of the locking device for the operating method of the quick locking device for a lifting platform provided in Embodiment 3 of this application is as follows: Figure 18 As shown, the unlocking operation of the locking device further includes the following steps:

[0077] S50, start the lifting drive assembly 90;

[0078] S60, rotate screw 301 downwards to lower the movable wedge block 302 connected above screw 301 to a certain height;

[0079] S70, rotate the bearing beam 20 so that it is at a certain angle relative to the first beam 102, so that the locking component 30 leaves a gap between itself and the fixed wedge block 100 in the horizontal direction; so that the fixed wedge block 100 can descend smoothly with the lifting platform;

[0080] S80, the lifting drive assembly 90 drives the lifting platform 80 to descend to the specified height;

[0081] S90, remove the support beam 101 from the fixed platform 70.

[0082] By employing the above-described unlocking procedure, the lifting platform can be quickly unlocked when it needs to be lowered, switching to the lifting drive component under load, which improves work efficiency and reduces construction costs.

[0083] In the description of this application, it should be understood that the terms "middle", "longitudinal", "lateral", "length", "width", "height", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0084] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0085] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0086] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0087] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A quick locking device for a lifting platform, characterized in that, include: The fixed platform (70), the lifting platform (80), and the locking assembly are connected together by a lifting drive assembly (90); the locking assembly includes a support component (10), a load-bearing beam (20), and a locking component (30). The support component (10) includes a support vertical beam (101), and a first horizontal beam (102) and a second horizontal beam (103) are respectively arranged parallel to each other on the same side of the support vertical beam (101) at the middle and bottom. The supporting crossbeam (20) is rotatably disposed between the first crossbeam (102) and the second crossbeam (103); the supporting crossbeam (20) is hollow, and the top and bottom of the end of the supporting crossbeam (20) extending out of the supporting member (10) are respectively provided with first through holes (201) in the vertical direction. The locking component (30) includes a screw (301), a movable wedge block (302) is connected above the screw (301), and the bottom of the screw (301) passes through the first through hole (201) at the top and bottom of the bearing beam (20) and then extends out of the bearing beam (20). The lower part of the lifting platform (80) is provided with fixed wedge blocks (100) corresponding to the number and position of the locking components. The upper part of the supporting vertical beam (101) is connected to the upper part of the fixed platform (70), and the movable wedge block (302) is in contact with the fixed wedge block (100).

2. The quick locking device for a lifting platform according to claim 1, characterized in that, The bearing crossbeam is provided with a rotating sleeve (40), and the rotating sleeve (40) is provided with a first threaded hole (401) along the vertical edge. Both sides of the rotating sleeve (40) are provided with a rotating longitudinal shaft (402). The first threaded hole (401) corresponds to the screw (301) in the vertical direction. The bottom of the screw (301) passes through the first through hole (201) at the top of the bearing beam (20) and is threaded to the first threaded hole (401) and then passes through the first through hole (201) at the bottom of the bearing beam (20). The two rotating longitudinal axes (402) respectively pass through the side wall of the bearing beam (20) and extend out of the bearing beam (20).

3. A quick locking device for a lifting platform according to claim 1 or 2, characterized in that, It also includes a rotating shaft (50), the bottom of which passes through the first crossbeam (102), one end of the bearing crossbeam (20) near the supporting vertical beam (101) and the second crossbeam (103) in sequence, and is then threaded together with the first nut (60).

4. The quick locking device for a lifting platform according to claim 1, characterized in that, The first through hole (201) is an oblong through hole, and its length direction is arranged laterally.

5. A quick locking device for a lifting platform according to claim 1, characterized in that, The top of the screw (301) is provided with a spherical connector (3011), and the lower part of the spherical connector (3011) is connected to a retaining plate (303). The middle part of the retaining plate (303) is provided with a second through hole, the diameter of which is smaller than the diameter of the ball of the spherical connector (3011). The retaining plate (303) is bolted to the bottom of the movable wedge block (302). The movable wedge block (302) has a groove in the middle of its bottom, which is adapted to the top of the spherical connector (3011) so that the top of the spherical connector (3011) can rotate within the groove.

6. The quick locking device for a lifting platform according to claim 1, characterized in that, The bottom of the screw (301) is provided with a rotating handle (3012).

7. A quick locking device for a lifting platform according to any one of claims 1-6, characterized in that: At least one set of limiting blocks (110) are provided on the top of the fixed platform (70) and the bottom of the lifting platform (80).

8. A method of operation for using the quick locking device of any one of claims 1-7 for a lifting platform, characterized in that, The locking operation of the locking device includes the following steps: S10, Install the locking assembly; S101, the upper part of the supporting vertical beam (101) is connected to the upper part of the fixed platform (70); S102, rotate the bearing beam (20) so that it is at a certain angle relative to the first beam (102), so that the locking component (30) leaves a gap with the fixed wedge block (100) in the horizontal direction; S20, start the lifting drive assembly (90), the lifting drive assembly (90) drives the lifting platform (80) to rise; S30, after the lifting platform (80) rises to the specified height, the locking assembly locks the lifting platform (80); S301, rotate the bearing beam (20) so that the bearing beam (20) is parallel to the first beam (102); S302, rotate the screw (301) upward to raise the movable wedge block (302) connected above the screw (301); until the movable wedge block (302) abuts against the fixed wedge block (100) set at the lower part of the lifting platform (80), then stop rotating the screw (301). S40, disable the lifting drive assembly (90).

9. The operating method of the quick locking device for a lifting platform according to claim 8, characterized in that, The unlocking operation of the locking device includes the following steps: S50, start the lifting drive assembly (90); S60, rotate the screw (301) downwards to lower the movable wedge block (302) connected above the screw (301) by a certain height; S70, rotate the bearing beam (20) so that it is at a certain angle relative to the first beam (102) so that the locking component (30) leaves a gap with the fixed wedge block (100) in the horizontal direction; S80, the lifting drive assembly (90) drives the lifting platform (80) to descend to the specified height; S90, the support beam (101) is removed from the fixed platform (70).

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