Lifting device and tower

Abstract

The embodiment of the utility model provides a lifting device and a tower. The lifting device comprises a first frame body and a second frame body. The first frame body is provided with an operating valve mounting surface, the second frame body is provided with an operating valve mounting surface, the lifting device has a locking state and a sliding state, and when the lifting device is in the locking state, the second frame body is located at a locking position on the first frame body and is in locking fit with the first frame body; when the lifting device is in the sliding state, the second frame body is arranged on the first frame body in a sliding mode in the height direction. The lifting device can be switched between the locking state and the sliding state under the action of external force. According to the lifting device, the position of the operation valve set can be adjusted.

Description

Technical Field

[0001] This application relates to the field of oilfield engineering machinery technology, and in particular to a lifting device and a tower. Background Technology

[0002] During oil extraction, the height of the tower base often needs to be adjusted for different oil wells to meet the different tower height requirements of different oil wells.

[0003] However, in related technologies, the operating valve assembly is mounted on the base frame, and the position of the operating valve assembly on the base frame is relatively fixed, so the operating valve assembly will rise and fall with the height of the base frame, which is inconvenient for operators. Utility Model Content

[0004] In view of this, the main objective of the embodiments of this application is to provide a lifting device and tower capable of adjusting the position of the operating valve group.

[0005] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:

[0006] The first aspect of this application provides a lifting device, including:

[0007] First frame;

[0008] The second frame has an operating valve mounting surface. The lifting device has a locked state and a sliding state. When the lifting device is in the locked state, the second frame is located in the locked position on the first frame and is locked in cooperation with the first frame. When the lifting device is in the sliding state, the second frame is slidably mounted on the first frame along the height direction. The lifting device can switch between the locked state and the sliding state under the action of external force.

[0009] In one embodiment, the first frame includes a first telescopic tube extending along the height direction, and the second frame includes a connecting rod and a second telescopic tube extending along the height direction. The connecting rod is disposed on the second telescopic tube and has the operating valve mounting surface.

[0010] One of the first telescopic tube and the second telescopic tube has a telescopic cavity, and at least a portion of the other of the first telescopic tube and the second telescopic tube is slidably disposed in the telescopic cavity.

[0011] In one embodiment, the first telescopic tube has the telescopic cavity, and the bottom end of the first telescopic tube is open to form a first opening, the first opening communicating with the telescopic cavity;

[0012] When the lifting device is in the sliding state, the second telescopic tube is slidably disposed in the telescopic cavity, and a portion of the second telescopic tube can slide out of the telescopic cavity through the first opening.

[0013] In one embodiment, at least a portion of the first telescopic tube is open on one side along a first direction to form a connecting groove communicating with the telescopic cavity, and one end of the connecting rod extends into the telescopic cavity through the connecting groove to connect with the second telescopic tube; wherein, the first direction is perpendicular to the height direction.

[0014] In one embodiment, the top end of the first telescopic tube is open to form a first installation inlet, the first installation inlet communicating with the telescopic cavity, the connecting groove extending along the height direction, the top end of the connecting groove being open to form a second installation inlet, the second installation inlet communicating with the first installation inlet.

[0015] In one embodiment, the connecting groove extends along the height direction, and the first telescopic tube further includes a limiting part located at the bottom end of the connecting groove. When the lifting device is in the sliding state and the connecting rod slides to the limiting part, the limiting part abuts against the second frame to restrict the second frame from sliding towards the bottom.

[0016] In one embodiment, the limiting part includes a limiting wall, the opposite ends of which are respectively connected to the groove walls on both sides of the connecting groove, thereby closing the bottom end of the connecting groove and restricting the second frame from sliding towards the bottom; or,

[0017] The bottom of the connecting groove is open to form a second opening. The side walls on both sides of the second opening protrude to form the limiting part. A portion of the second telescopic tube protrudes to form an abutting part on the side near the connecting groove. The limiting part abuts against the abutting part to restrict the second frame from sliding towards the bottom.

[0018] In one embodiment, the first frame includes a plurality of first telescopic tubes, each of which is spaced apart along a second direction; the second frame includes a plurality of second telescopic tubes corresponding one-to-one with the first telescopic tubes; the connecting rod extends along the second direction, and its opposite ends along the second direction are respectively connected to at least two second telescopic tubes; wherein, the second direction is perpendicular to the height direction; and / or,

[0019] The first telescopic tube has a first fastening hole, and the second telescopic tube has a second fastening hole. The first fastening hole and the second fastening hole are respectively connected to the telescopic cavity. The lifting device also includes a fastener. When the lifting device is in the locked state, the fastener is detachably inserted through the first fastening hole, the second fastening hole, and the telescopic cavity. When the fastener is removed under the action of external force, the lifting device switches to the sliding state.

[0020] In one embodiment, the lifting device further includes a third frame, which is slidably connected to the first frame. When the lifting device is in the locked state, the first frame, the second frame, and the third frame are all locked together. When the lifting device is in the sliding state, the first frame can slide towards the bottom relative to the third frame under the action of gravity, and the second frame can slide towards the bottom relative to the first frame under the action of gravity.

[0021] A second aspect of this application provides a tower, characterized in that the tower includes a lifting base, an operating valve group, and any of the above-described lifting devices. The operating valve group is installed on the operating valve mounting surface. A first frame is disposed on the lifting base. When the lifting base moves toward the top, the lifting device switches to the sliding state under the action of an external force. The second frame can slide relative to the first frame and the lifting base toward the bottom under the action of gravity.

[0022] In one embodiment, the lifting device is slidably mounted on the lifting base in the horizontal direction.

[0023] This application provides a lifting device and a tower. The lifting device includes a first frame and a second frame with an operating valve mounting surface. The lifting device can switch between a locked state and a sliding state under the action of external force. When the lifting device is in the sliding state, the second frame is slidably mounted on the first frame along the height direction. Therefore, when it is necessary to adjust the position of the operating valve assembly, by switching the lifting device to the sliding state, the second frame can slide relative to the first frame along the height direction, thereby making the position of the second frame adjustable along the height direction. Thus, during the raising of the tower's lifting base, by switching the lifting device to the sliding state, the second frame can descend under gravity, thereby lowering the height of the operating valve mounting surface and lowering the position of the operating valve assembly, thus facilitating operation by the operator. Furthermore, when the lifting device is in the locked state, the second frame is located in the locked position on the first frame and is locked in cooperation with the first frame. Therefore, the second frame can remain relatively fixed to the first frame without adjusting the position of the operating valve assembly, so that the second frame will not slide relative to the first frame under the action of gravity, thereby improving the connection stability between the second frame and the first frame. Attached Figure Description

[0024] Figure 1 This is a partial structural diagram of a tower according to an embodiment of this application;

[0025] Figure 2 for Figure 1 A schematic diagram of the lifting device; the lifting device is in the locked state in the diagram.

[0026] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0027] Figure 4 for Figure 1 A schematic diagram of the lifting device; the lifting device is in a sliding state in the diagram.

[0028] Figure 5 for Figure 4 A magnified view of a section at point B in the middle;

[0029] Figure 6 for Figure 4 A magnified view of a section at point C.

[0030] Explanation of reference numerals in the attached figures

[0031] 100. Lifting device; 10. First frame; 11. First telescopic tube; 11a. Telescopic cavity; 11b. First opening; 11c. Connecting groove; 11d. First installation inlet; 11e. Second installation inlet; 111. Limiting part; 112. Limiting wall; 20. Second frame; 20a. Operating valve mounting surface; 21. Connecting rod; 22. Second telescopic tube; 30. Fastener; 40. Third frame; 200. Lifting base frame. Detailed Implementation

[0032] In this application, the orientation or positional relationship of "first direction", "second direction" and "altitude direction" is based on the appendix. Figure 2 The orientation or positional relationship shown is for illustrative purposes only and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0033] One embodiment of this application provides a lifting device 100; please refer to [link / reference]. Figures 2 to 4 The lifting device 100 includes a first frame 10 and a second frame 20.

[0034] The second frame 20 has an operating valve mounting surface 20a. The lifting device 100 has a locked state and a sliding state. When the lifting device 100 is in the locked state, the second frame 20 is located in the locked position on the first frame 10 and is locked in cooperation with the first frame 10. When the lifting device 100 is in the sliding state, the second frame 20 is slidably mounted on the first frame 10 along the height direction. The lifting device 100 can switch between the locked state and the sliding state under the action of external force.

[0035] Specifically, the operating valve mounting surface 20a is used to install the operating valve assembly. When the lifting device 100 is in a sliding state, the operating valve assembly can slide and rise and fall with the second frame 20, thereby realizing the adjustment of the height position of the operating valve assembly.

[0036] The second frame 20 is mounted on the first frame 10. When the lifting device 100 is locked, the second frame 20 and the first frame 10 cannot slide relative to each other; they are mutually locked. However, when the lifting device 100 is in a sliding state, the second frame 20 and the first frame 10 can slide relative to each other, and they are not locked.

[0037] The specific position of the locking position of the second frame 20 can be set according to the actual situation. It is sufficient that the second frame 20 can still slide towards the bottom along the height direction after the lifting device 100 switches to the sliding state.

[0038] For example, when the second frame 20 is in the locked position, the entire area of ​​the second frame 20 is contained within the first frame 10. When the lifting device 100 switches to the sliding state, the second frame 20 slides towards the bottom, and a portion of it slides out of the first frame 10.

[0039] The lifting device 100 can switch between a locked state and a sliding state under the action of external force, and its specific implementation method is not limited. For example, when the lifting device 100 is in the locked state, the first frame 10 and the second frame 20 are fastened together by fasteners 30 (such as pins, bolts, etc.). By removing the fasteners 30 by external force, the limiting effect of the fasteners 30 on the first frame 10 and the second frame 20 is removed, thereby allowing the first frame 10 and the second frame 20 to slide relative to each other in the height direction.

[0040] The first frame 10 and the second frame 20 are both frame structures on the lifting device 100. The number of frame structures on the lifting device 100 is not limited. Depending on the actual situation, in some embodiments, the lifting device 100 may only include the first frame 10 and the second frame 20. In other embodiments, the lifting device 100 may also include other frame structures.

[0041] For example, please see Figures 2 to 4 The lifting device 100 also includes a third frame 40, which is slidably connected to the first frame 10. When the lifting device 100 is in the locked state, the first frame 10, the second frame 20 and the third frame 40 are all locked together. When the lifting device 100 is in the sliding state, the first frame 10 can slide towards the bottom relative to the third frame 40 under the action of gravity, and the second frame 20 can slide towards the bottom relative to the first frame 10 under the action of gravity.

[0042] In other words, the second frame 20 is slidably mounted on the first frame 10, and the first frame 10 is slidably mounted on the third frame 40, all three being arranged along the height direction. This further increases the height adjustment range of the lifting device 100.

[0043] In the locked state, the first frame 10, the second frame 20, and the third frame 40 are mutually locked. The specific locking method is not limited. For example, the third frame 40 also has fastening holes, and the first frame 10, the second frame 20, and the third frame 40 are locked together by fasteners 30.

[0044] Of course, in other embodiments, the lifting device 100 may also include a plurality of third frames 40, each third frame 40 being arranged along the height direction, and adjacent third frames 40 being able to slide along the height direction.

[0045] It should be noted that the structure of the third frame 40 can be the same as or different from that of the first frame 10.

[0046] Another embodiment of this application provides a tower; please refer to [link / reference]. Figure 1 The tower includes a lifting base frame 200, an operating valve group, and a lifting device 100 as described in any embodiment of this application. The operating valve group is installed on the operating valve mounting surface 20a. The first frame 10 is set on the lifting base frame 200. When the lifting base frame 200 moves towards the top, the lifting device 100 switches to a sliding state under the action of external force. The second frame 20 can slide towards the bottom relative to the first frame 10 and the lifting base frame 200 under the action of gravity.

[0047] Specifically, during the lifting process of the lifting base 200, the locking state of the lifting device 100 is released, allowing it to switch to a sliding state. When the lifting base 200 rises, the second frame 20 can fall under the influence of gravity to reduce its height. When the lifting base 200 lowers, the second frame 20 can move (i.e., rise) towards the first frame 10 with the support of the ground, thereby maintaining the operating valve mounting surface 20a within a certain height range.

[0048] It should be noted that, depending on the actual situation, in some embodiments, the first frame 10 may be directly connected to the lifting base 200, while in other embodiments, the first frame 10 may be indirectly connected to the lifting base 200 through other frame structures.

[0049] Furthermore, the specific connection method between the lifting device 100 and the lifting base 200 can be set according to the actual situation. The two can be connected in a fixed way or in a movable way.

[0050] For example, the lifting device 100 is slidably mounted on the lifting base 200 in the horizontal direction. That is, the lifting device 100 as a whole can slide relative to the lifting base 200 in the horizontal direction, thereby adjusting the horizontal position of the lifting device 100 and thus realizing the position adjustment of the operating valve assembly in two degrees of freedom.

[0051] In the lifting device 100 of this embodiment, the lifting device 100 can switch between a locked state and a sliding state under the action of an external force. When the lifting device 100 is in the sliding state, the second frame 20 is slidably mounted on the first frame 10 along the height direction. Therefore, when it is necessary to adjust the position of the operating valve assembly, by switching the lifting device 100 to the sliding state, the second frame 20 can slide relative to the first frame 10 along the height direction, thereby making the position of the second frame 20 adjustable along the height direction. Thus, during the raising of the tower's lifting base 200, by switching the lifting device 100 to the sliding state, the second frame 20 can descend under the action of gravity, thereby lowering the height of the operating valve mounting surface 20a and lowering the position of the operating valve assembly, thus facilitating operation by the operator. Furthermore, when the lifting device 100 is in the locked state, the second frame 20 is located in the locked position on the first frame 10 and is locked in cooperation with the first frame 10. Therefore, the second frame 20 and the first frame 10 can be kept relatively fixed without adjusting the position of the operating valve assembly, so that the second frame 20 will not slide relative to the first frame 10 under the action of gravity, thereby improving the connection stability between the second frame 20 and the first frame 10.

[0052] In one embodiment, please refer to Figures 2 to 4 The first frame 10 includes a first telescopic tube 11 extending in the height direction, and the second frame 20 includes a connecting rod 21 and a second telescopic tube 22 extending in the height direction. The connecting rod 21 is disposed on the second telescopic tube 22 and has an operating valve mounting surface 20a.

[0053] One of the first telescopic tube 11 and the second telescopic tube 22 has a telescopic cavity 11a, and at least a portion of the other of the first telescopic tube 11 and the second telescopic tube 22 is slidably disposed in the telescopic cavity 11a. This allows for better relative sliding between the first frame 10 and the second frame 20, thereby facilitating the adjustment of the position of the operating valve mounting surface 20a.

[0054] Specifically, the operating valve assembly is installed on the operating valve mounting surface 20a of the connecting rod 21. The connecting rod 21 is set on the second telescopic tube 22 and can slide with the second telescopic tube 22, thereby driving the operating valve assembly to adjust its position along the height direction.

[0055] Depending on the actual situation, in some embodiments, the first telescopic tube 11 may have a telescopic cavity 11a, and a portion or all of the second telescopic tube 22 may be located within the telescopic cavity 11a and be able to slide relative to the first telescopic tube 11.

[0056] Of course, in other embodiments, the second telescopic tube 22 may have a telescopic cavity 11a, and a portion or all of the first telescopic tube 11 may be located within the telescopic cavity 11a. The second telescopic tube 22 may slide relative to the first telescopic tube 11.

[0057] In one embodiment, please refer to Figure 4 and Figure 5 The first telescopic tube 11 has a telescopic cavity 11a, and the bottom end of the first telescopic tube 11 is open to form a first opening 11b, which is connected to the telescopic cavity 11a.

[0058] When the lifting device 100 is in a sliding state, the second telescopic tube 22 is slidably disposed in the telescopic cavity 11a, and a portion of the second telescopic tube 22 can slide out of the telescopic cavity 11a through the first opening 11b.

[0059] In other words, the first opening 11b is located at the bottom end of the first telescopic tube 11, and is used to allow the second telescopic tube 22 located in the telescopic cavity 11a to extend out. As a result, the sliding distance of the second telescopic tube 22 can be increased, allowing for a wider range of height adjustment of the operating valve assembly.

[0060] In one embodiment, please refer to Figure 2 , Figure 4 and Figure 5 At least a portion of the first telescopic tube 11 is open along one side in the first direction to form a connecting groove 11c communicating with the telescopic cavity 11a. One end of the connecting rod 21 extends into the telescopic cavity 11a through the connecting groove 11c to connect with the second telescopic tube 22. The first direction is perpendicular to the height direction. This facilitates the connection between the connecting rod 21 and the second telescopic tube 22, allowing the second telescopic tube 22 to slide along the height direction to adjust the position of the operating valve assembly on the connecting rod 21.

[0061] The first direction can be any direction within the horizontal plane. That is, the first telescopic tube 11 can have a connecting groove 11c formed on any side along the circumference, so that the connecting rod 21 can extend into the telescopic cavity 11a, thereby facilitating its connection with the second telescopic tube 22.

[0062] It is understandable that the connecting groove 11c also extends along the height direction, which allows the first telescopic tube 11 to not cause significant interference to the movement of the connecting rod 21 during the sliding of the second telescopic tube 22 relative to the first telescopic tube 11 along the height direction.

[0063] In one embodiment, please refer to Figures 4 to 6The top end of the first telescopic tube 11 is open to form a first installation inlet 11d, which communicates with the telescopic cavity 11a. The connecting groove 11c extends along the height direction, and the top end of the connecting groove 11c is open to form a second installation inlet 11e, which communicates with the first installation inlet 11d. This facilitates the installation of the connecting rod 21 and the second telescopic tube 22 onto the first telescopic tube 11, and makes the first frame 10 and the second frame 20 easy to assemble and disassemble.

[0064] Specifically, the first installation inlet 11d is used to allow the second telescopic tube 22 to be installed into the telescopic cavity 11a from the top end of the first telescopic tube 11. The second installation inlet 11e is used to allow the connecting rod 21 to be simultaneously inserted into the connecting groove 11c from the top end of the first telescopic tube 11, thus reducing the interference of the second telescopic tube 22 on the connecting rod 21.

[0065] In one embodiment, please refer to Figure 4 and Figure 5 The connecting groove 11c extends along the height direction. The first telescopic tube 11 also includes a limiting part 111 located at the bottom end of the connecting groove 11c. When the lifting device 100 is in a sliding state and the connecting rod 21 slides to the limiting part 111, the limiting part 111 abuts against the second frame 20 to restrict the second frame 20 from sliding to the bottom. This prevents the second telescopic tube 22 and the connecting rod 21 from sliding out from the bottom end of the first telescopic tube 11, thereby improving the connection stability between the first frame 10 and the second frame 20.

[0066] Specifically, the limiting part 111 is located at the bottom end of the connecting groove 11c. It can prevent the second frame 20 from sliding further to the bottom by abutting against the second frame 20, thus preventing the second frame 20 from coming off.

[0067] Depending on the specific implementation, in some embodiments, the limiting part 111 may abut against the second telescopic tube 22 to restrict the second frame 20 from continuing to slide downwards. In other embodiments, the limiting part 111 may abut against the connecting rod 21 to restrict the second frame 20 from continuing to slide downwards. Of course, it may also abut against both the connecting rod 21 and the second telescopic tube 22 simultaneously to restrict the second frame 20 from continuing to slide downwards.

[0068] It should be noted that the specific shape of the limiting part 111 is not limited. It only needs to be able to perform the function of abutting and limiting.

[0069] For example, please refer to Figure 4 and Figure 5 The limiting part 111 includes a limiting wall 112, the two opposite ends of which are connected to the groove walls on both sides of the connecting groove 11c, thereby closing the bottom end of the connecting groove 11c and restricting the second frame 20 from sliding towards the bottom. Thus, a better limiting effect can be achieved.

[0070] It should be noted that the limiting wall 112 and the groove walls on both sides of the connecting groove 11c can be an integral structure, that is, the bottom end of the connecting groove 11c is a closed end, and the bottom end of the connecting groove 11c is not connected to the outside in the height direction, thereby restricting the second frame 20 from sliding out of the connecting groove 11c from the bottom end.

[0071] In fact, when the second frame 20 slides to the bottom end of the first telescopic tube 11, the limiting wall 112 abuts against the connecting rod 21 to prevent the second frame 20 from continuing to slide to the bottom.

[0072] For example, the bottom end of the connecting groove 11c is open to form a second opening, and the side walls on both sides of the second opening protrude to form a limiting part 111. A portion of the second telescopic tube 22 near the connecting groove 11c protrudes to form an abutting part. The limiting part 111 abuts against the abutting part to restrict the second frame 20 from sliding towards the bottom. Thus, a better limiting effect can be achieved.

[0073] In other words, the bottom end of the connecting groove 11c is not closed, but open. Furthermore, the limiting part 111 consists of two protruding structures located at the second opening. Additionally, a protruding structure, i.e., an abutting part, is also formed on the outer wall of the second telescopic tube 22. When the abutting part slides downwards to abut against the limiting part 111, the limiting part 111 can prevent the abutting part from continuing to move downwards, thus preventing the second frame 20 from moving downwards as a whole.

[0074] In one specific embodiment, the third frame 40 includes a third telescopic tube, and a connecting groove is also formed on one side of the third telescopic tube along the first direction. When the lifting device 100 is in the locked state, at least a portion of the connecting groove of the third telescopic tube and the connecting groove 11c of the second telescopic tube 22 overlap and communicate along the first direction. The connecting rod 21 passes through the connecting grooves of the third telescopic tube and the second telescopic tube 22 in sequence to connect with the second telescopic tube 22.

[0075] It is understandable that, in order to facilitate the passage of the connecting rod 21, a limiting part can also be provided at the bottom of the connecting groove of the third telescopic tube.

[0076] For example, the bottom end of the connecting groove of the third telescopic tube is open and has a raised structure, while a raised structure is also formed on the outer side wall of the first telescopic tube 11. The raised structures of the third telescopic tube and the first telescopic tube 11 abut against each other to prevent the first telescopic tube 11 from sliding out from the bottom end of the connecting groove of the third telescopic tube.

[0077] In one embodiment, please refer to Figure 4The first frame 10 includes multiple first telescopic tubes 11, which are spaced apart along a second direction. The second frame 20 includes multiple second telescopic tubes 22 corresponding one-to-one with the first telescopic tubes 11. A connecting rod 21 extends along the second direction, and its opposite ends along the second direction are respectively connected to at least two second telescopic tubes 22. The second direction is perpendicular to the height direction. By providing multiple telescopic tubes, the relative sliding between the first frame 10 and the second frame 20 can be smoother, and the connection stability of the first telescopic tubes 11, the second telescopic tubes 22, and the connecting rod 21 can be improved.

[0078] Specifically, the number of first telescopic tubes 11 and second telescopic tubes 22 is the same, and they are correspondingly slidably connected. The connecting rod 21 extends along the second direction, and it can be connected to each of the second telescopic tubes 22 respectively, or it can be connected to only a portion of the second telescopic tubes 22.

[0079] It should be noted that the second direction is also perpendicular to the height direction, meaning it can be any direction within the horizontal plane. Therefore, depending on the specific circumstances, the second direction can be perpendicular to the first direction, the same as it, or at any angle.

[0080] In one embodiment, the first telescopic tube 11 has a first fastening hole, and the second telescopic tube 22 has a second fastening hole. The first and second fastening holes are respectively connected to the telescopic cavity 11a. The lifting device 100 also includes a fastener 30. When the lifting device 100 is in the locked state, the fastener 30 is detachably inserted through the first fastening hole, the second fastening hole, and the telescopic cavity 11a. When the fastener 30 is removed under external force, the lifting device 100 switches to the sliding state. This allows the operator to easily switch the state of the lifting device 100 to adjust the relative position of the operating valve assembly.

[0081] Specifically, when the lifting device 100 is in the locked state, the first fastening hole and the second fastening hole are aligned and communicate with the telescopic cavity 11a respectively. The fastener 30 passes through the first fastening hole, the second fastening hole and the telescopic cavity 11a, thereby restricting the relative sliding of the first frame 10 and the second frame 20.

[0082] Of course, when the operator removes the fastener 30, the first frame 10 and the second frame 20 will not be restricted by the fastener 30, thus enabling relative sliding.

[0083] It should be noted that the specific structural type of the fastener 30 is not limited, as long as it can pass through the first fastening hole, the second fastening hole and the telescopic cavity 11a to limit the relative sliding of the first frame 10 and the second frame 20.

[0084] For example, fastener 30 can be a pin, bolt, etc.

[0085] In one specific embodiment, when the lifting device 100 is in the locked state, the second telescopic tube 22 is housed in the first telescopic tube 11, and the first telescopic tube 11 is housed in the third telescopic tube. This allows both the first telescopic tube 11 and the second telescopic tube 22 to be housed in the third telescopic tube, thereby greatly reducing the external dimensions of the lifting device 100 in the locked state.

[0086] When the lifting device 100 is in the sliding state with the maximum height, the top of the first frame 10 is slidably connected to the bottom of the third frame 40, and the bottom of the first frame 10 is slidably connected to the top of the third frame 40, thereby greatly increasing the height range of the operating valve group.

[0087] In the description of this application, the references to terms such as "in one embodiment," "in some embodiments," "in a specific embodiment," or "exemplary," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of the different embodiments or examples.

[0088] The above are merely preferred embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the protection scope of this application.

Claims

1. A lifting device, characterized in that The utility model relates to a telescopic lifting device, comprising: a first frame body; a second frame body having an operating valve mounting surface, the lifting device having a locking state and a sliding state, when the lifting device is in the locking state, the second frame body is located at a locking position on the first frame body and is locked with the first frame body, when the lifting device is in the sliding state, the second frame body is slidably arranged on the first frame body along a height direction, and the lifting device can be switched between the locking state and the sliding state under external force.

2. The lift device of claim 1, wherein, The first frame body comprises a first telescopic pipe extending along the height direction, the second frame body comprises a connecting rod and a second telescopic pipe extending along the height direction, the connecting rod is arranged on the second telescopic pipe, and the connecting rod has the operating valve mounting surface; one of the first telescopic pipe and the second telescopic pipe has a telescopic cavity, and at least a part of the other of the first telescopic pipe and the second telescopic pipe is slidably arranged in the telescopic cavity.

3. The lift device of claim 2, wherein, The first telescopic pipe has the telescopic cavity, and a bottom end of the first telescopic pipe is open to form a first opening, the first opening being in communication with the telescopic cavity; when the lifting device is in the sliding state, the second telescopic pipe is slidably arranged in the telescopic cavity, and a part of the second telescopic pipe can slide out of the telescopic cavity through the first opening.

4. The lift device of claim 3, wherein, At least a part of one side of the first telescopic pipe along a first direction is open to form a connecting groove in communication with the telescopic cavity, one end of the connecting rod extends into the telescopic cavity through the connecting groove to be connected with the second telescopic pipe, and the first direction is perpendicular to the height direction.

5. The lift device of claim 4, wherein, A top end of the first telescopic pipe is open to form a first mounting inlet, the first mounting inlet being in communication with the telescopic cavity, the connecting groove extends along the height direction, a top end of the connecting groove is open to form a second mounting inlet, and the second mounting inlet is in communication with the first mounting inlet.

6. Lift according to claim 4 or 5, characterized in that The connecting groove extends along the height direction, the first telescopic pipe further comprises a limiting part at a bottom end of the connecting groove, when the lifting device is in the sliding state and the connecting rod slides to the limiting part, the limiting part abuts against the second frame body to limit the second frame body from sliding towards a bottom side.

7. The lifting device of claim 6, wherein, The limiting part comprises a limiting wall, opposite ends of the limiting wall are respectively connected with groove walls on two sides of the connecting groove, the bottom end of the connecting groove is closed to limit the second frame body from sliding towards the bottom side, and the limiting wall is connected with the groove walls on the two sides of the connecting groove. Alternatively, a bottom end of the connecting groove is open to form a second opening, side walls on two sides of the second opening are protruded to form the limiting part, a part of an area on a side of the second telescopic pipe close to the connecting groove is protruded to form an abutting part, the limiting part abuts against the abutting part to limit the second frame body from sliding towards the bottom side.

8. Lift according to any of claims 2-5, characterized in that The first frame body comprises a plurality of the first telescopic pipes, each of which is arranged along a second direction; the second frame body comprises a plurality of the second telescopic pipes corresponding to the first telescopic pipes one by one; the connecting rod extends along the second direction, and opposite ends of the connecting rod along the second direction are connected to at least two of the second telescopic pipes respectively; wherein the second direction is perpendicular to the height direction; and / or, The first telescopic pipe has a first fastening hole, and the second telescopic pipe has a second fastening hole; the first fastening hole and the second fastening hole are in communication with the telescopic cavity respectively; the lifting device further comprises a fastener, which is detachably arranged in the first fastening hole, the second fastening hole and the telescopic cavity when the lifting device is in the locking state; the lifting device is switched to the sliding state when the fastener is detached under the action of an external force.

9. The lift device according to any one of claims 1 to 5, characterized in that The lifting device further comprises a third frame body, which is in sliding connection with the first frame body; when the lifting device is in the locking state, the first frame body, the second frame body and the third frame body are all in locking fit; when the lifting device is in the sliding state, the first frame body can slide towards the bottom side relative to the third frame body under the action of gravity, and the second frame body can slide towards the bottom side relative to the first frame body under the action of gravity.

10. A tower characterized in that, The tower comprises a lifting chassis, an operating valve group and the lifting device according to any one of claims 1-9; the operating valve group is installed on the operating valve installation surface; the first frame body is arranged on the lifting chassis; when the lifting chassis moves towards the top side, the lifting device is switched to the sliding state under the action of an external force, and the second frame body can slide towards the bottom side relative to the first frame body and the lifting chassis under the action of gravity.

11. Tower according to claim 10, characterized in that In the horizontal direction, the lifting device is slidably arranged on the lifting chassis.

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