Lift for building construction

Abstract

The utility model belongs to the technical field of building construction equipment, and particularly relates to an elevator for building construction, which comprises a frame, a platform, an elevating mechanism and a locking mechanism, and the platform is slidably arranged on the frame along the vertical direction; the lifting mechanism is used for driving the platform to lift on the rack; the locking mechanism comprises fixing teeth, a fixing frame, a locking plate and a limiting mechanism, and the multiple fixing teeth are arranged on the rack in the vertical direction at intervals; the fixed frame is arranged on the platform; the locking plate is arranged on the fixing frame, a plurality of locking teeth are arranged on the side wall of the side, close to the fixing teeth, of the locking plate at intervals in the vertical direction, and the locking plate can move relative to the fixing frame so that the locking teeth can be meshed with or separated from the fixing teeth; the limiting mechanism is used for limiting movement of the locking plate when the locking teeth are meshed with the fixed teeth, and the limiting mechanism can relieve movement limitation on the locking plate under the action of external force; compared with the prior art, the elevator has the advantages that the platform can be locked when the platform is in a static state, so that the platform is stabilized at the current position, the stability of the platform in the static state is improved, and the safety of workers in the high-altitude operation process is improved.

Description

Technical Field

[0001] This utility model belongs to the field of construction equipment technology, and in particular relates to a construction hoist. Background Technology

[0002] Building construction refers to the production activities during the implementation phase of an engineering project. It is the process of building various types of structures, or the process of turning the lines on design drawings into a physical object at a designated location. It includes foundation construction, main structure construction, roofing construction, and decoration construction.

[0003] Because construction involves a large flow of people and many outdoor and high-altitude operations, workers such as plasterers, bricklayers, concrete workers, and scaffolders still mainly rely on manual labor. Among these, elevators are a common piece of equipment in construction, designed for workers to access high-altitude areas during construction.

[0004] Chinese Patent Publication No. CN219652578U discloses a construction hoist, including a base plate. Four support rods are installed on top of the base plate, and two lifting mechanisms are installed between each pair of support rods. A platform connects the lifting mechanisms. The four support rods support the two lifting mechanisms, which are connected to the platform. The two lifting mechanisms work simultaneously to quickly adjust the platform height. The achievable platform height is determined by the lengths of the screws and support rods. The screws are less expensive and more practical. Furthermore, a connecting plate, in conjunction with a slider and a slide rail, stabilizes and limits the movement of the connecting plate and the platform, significantly reducing platform sway and improving stability.

[0005] However, this type of lift relies solely on the cooperation of the screw and the sleeve to support the platform during the lifting process. Although the cooperation of the slider and the slide rail improves the stability of the lifting process, the stability of the platform when it is stationary after it has risen to the required position is difficult to guarantee. It is still quite dangerous for workers to work at heights, so improvements are still needed. Utility Model Content

[0006] The purpose of this utility model is to address the aforementioned technical problems by providing a construction hoist that can lock the platform when it is stationary, thus stabilizing the platform in its current position and improving its stability, thereby enhancing the safety of workers during high-altitude operations.

[0007] In view of the above, this utility model provides a construction hoist, comprising:

[0008] The frame has a platform that slides vertically along its surface.

[0009] Lifting mechanism, used to drive the platform to move up and down on the frame;

[0010] It also includes a locking mechanism, which includes:

[0011] Fixed teeth: Multiple fixed teeth are spaced apart along the vertical direction on the frame;

[0012] The fixed frame is installed on the platform;

[0013] The locking plate is mounted on the fixed frame. Multiple locking teeth are spaced vertically on the side wall of the locking plate near the fixed teeth. The locking plate can move relative to the fixed frame so that these locking teeth can engage or disengage with the multiple fixed teeth.

[0014] The limiting mechanism is used to restrict the movement of the locking plate when the locking teeth and the fixed teeth are engaged. The limiting mechanism can release the restriction on the movement of the locking plate under the action of external force.

[0015] In this technical solution, when the platform needs to be raised or lowered, the locking teeth on the locking plate are first separated from the fixed teeth on the frame. At this time, the platform can be raised or lowered by the lifting mechanism. When the platform is raised or lowered to a suitable height, the locking plate is driven to move relative to the fixed frame so that the fixed teeth on the locking plate mesh with multiple fixed teeth on the frame. Then, the movement of the locking plate is restricted by the limiting mechanism. At this time, the platform is locked and workers can perform high-altitude operations.

[0016] In the above technical solution, the first end of the locking plate is rotatably connected to the fixed frame, and the second end of the locking plate is a free end.

[0017] In the above technical solution, the limiting mechanism further includes:

[0018] A fixed base is provided on a platform, and a recessed groove is provided on the top of the fixed base.

[0019] The limiting plate has its lower end slidably positioned in the retraction groove in the vertical direction, and the side wall of the limiting plate is in contact with the surface of the locking plate on the side away from the locking teeth.

[0020] The elastic element is used to connect the bottom surface of the limiting plate and the retraction groove. When the elastic element is relaxed, the limiting plate can restrict the locking plate.

[0021] In the above technical solution, a torsion spring is further provided between the locking plate and the fixing frame. When the torsion spring is relaxed, the locking teeth and the fixing teeth are separated.

[0022] In the above technical solution, furthermore, when the locking plate comes into contact with the limiting plate as it approaches the fixing tooth, it can push the limiting plate downward.

[0023] In the above technical solution, a control groove is further provided on the side wall of the fixed seat, the control groove is connected to the retraction groove, a force-applying block is slidably provided in the control groove, and one end of the force-applying block is connected to the limiting plate.

[0024] In the above technical solution, the end of the force-applying block away from the limiting plate is hidden in the control groove, and a connecting groove for connecting tools is provided on the force-applying block.

[0025] The beneficial effects of this utility model are:

[0026] 1. By setting up a locking mechanism, the platform can be locked to the frame when stationary. This improves the stability of the platform when stationary, enhances the safety of workers during high-altitude operations, reduces the gravity exerted by the platform on the drive mechanism, and extends the service life of the drive mechanism.

[0027] 2. By designing the locking plate as a structure that can swing relative to the fixed frame, and setting a torsion spring between the locking plate and the fixed frame, and designing the limiting mechanism as a combination of a fixed seat, a retraction groove, a limiting plate, and an elastic element, the locking plate can automatically complete the limiting plate's movement restriction during the swinging process. When an external force is applied to the limiting plate, the locking plate can automatically move away from the fixed teeth, reducing the number of operation steps for workers.

[0028] 3. By setting up control grooves and force blocks, it is convenient for workers to apply external force to the limit plate. The force blocks are hidden in the control grooves, which prevents workers from accidentally releasing the movement restriction of the locking plate during high-altitude operations, and further improves the safety of workers during high-altitude operations. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a three-dimensional structural diagram of the present invention in the first direction.

[0031] Figure 2 This is a three-dimensional structural diagram of the second direction of this utility model.

[0032] Figure 3 This is a schematic diagram of the internal cross-sectional structure of this utility model.

[0033] Figure 4 This is a three-dimensional schematic diagram of the locking mechanism in this utility model.

[0034] Figure 5 for Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0035] The markings in the diagram are as follows:

[0036] 1. Frame; 2. Platform; 3. Lifting mechanism; 4. Fixing gear; 5. Fixing frame; 6. Locking plate; 601. Locking gear; 7. Limiting mechanism; 701. Fixing seat; 702. Retraction groove; 703. Limiting plate; 704. Elastic element; 705. Control groove; 8. Torsion spring; 9. Force application block; 901. Connecting groove; 10. Tool; Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] In the description of this utility model, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0039] Example 1

[0040] like Figures 1-2 As shown in the figure, this embodiment provides a construction hoist, including: a frame 1, a platform 2, a lifting mechanism 3, and a locking mechanism.

[0041] A platform 2 is slidably mounted on the frame 1 along the vertical direction; a lifting mechanism 3 is used to drive the platform 2 to rise and fall on the frame 1; any structure in the prior art that can drive the platform 2 to rise and fall can be used as the lifting mechanism 3 in this embodiment.

[0042] The locking mechanism includes: a fixing tooth 4, a fixing frame 5, a locking plate 6, and a limiting mechanism 7.

[0043] Multiple fixing teeth 4 are provided at intervals along the vertical direction on the frame 1. These fixing teeth 4 are set from the lowest position in the vertical direction of the platform 2 to the highest position in the vertical direction of the platform 2. The fixing teeth 4 are fixedly connected to the frame 1.

[0044] The mounting bracket 5 is fixed on the platform 2;

[0045] The locking plate 6 is mounted on the fixed frame 5. Multiple locking teeth 601 are arranged vertically on the side wall of the locking plate 6 near the fixed teeth 4. The locking plate 6 can move relative to the fixed frame 5 so that these locking teeth 601 engage or disengage with the multiple fixed teeth 4. The locking plate 6 can move relative to the fixed frame 5 by swinging or sliding relative to the fixed frame 5. When the locking plate 6 approaches the fixed teeth 4, it engages the locking teeth 601 with the fixed teeth 4. When the locking plate 6 moves away from the fixed teeth 4, it disengages the locking teeth 601 from the fixed teeth 4.

[0046] The limiting mechanism 7 is used to restrict the movement of the locking plate 6 when the locking tooth 601 is engaged with the fixed tooth 4. The limiting mechanism 7 can release the restriction on the movement of the locking plate 6 under the action of external force.

[0047] In this embodiment, locking mechanisms are provided on both opposite sides of platform 2, thereby improving the locking effect of platform 2; Figure 3 The image shows two positional states of the locking plate 6. In the case of the locking plate 6 on the left side of platform 2, the locking teeth 601 engage with the fixed teeth 4 on the frame 1, and the limiting mechanism 7 restricts the movement of the locking plate 6. In the case of the locking plate 6 on the right side of platform 2, the locking teeth 601 disengage from the fixed teeth 4 on the frame 1, and the limiting mechanism 7 does not restrict the movement of the locking plate 6. Figure 3 The two locking mechanisms are in two separate states only for ease of public understanding. Under normal use, both locking mechanisms are in the same state when platform 2 needs to be raised or lowered. Figure 3 The right side of platform 2 is in the state where both locking mechanisms are engaged when platform 2 needs to be locked. Figure 3 The state on the left side of the middle platform 2.

[0048] Example 2

[0049] This embodiment provides a construction hoist, which, in addition to the technical solutions of the above embodiments, also discloses a way of setting the locking plate 6;

[0050] like Figures 3-5 As shown, in this embodiment, the first end of the locking plate 6 is rotatably connected to the fixing frame 5, and the second end of the locking plate 6 is a free end; thus, the free end of the locking plate 6 can swing with the other end as a fulcrum.

[0051] Please see Figure 5In this embodiment, the limiting mechanism 7 includes: a fixed base 701, a limiting plate 703, and an elastic element 704.

[0052] The fixing seat 701 is fixed on the platform 2, and the top of the fixing seat 701 is provided with a recess groove 702 along the vertical direction;

[0053] The lower end of the limiting plate 703 is slidably disposed in the retraction groove 702 in the vertical direction, and the side wall of the limiting plate 703 when it is in the highest position is in contact with the surface of the locking plate 6 away from the locking tooth 601.

[0054] The elastic element 704 is used to connect the bottom surface of the limiting plate 703 and the retraction groove 702. When the elastic element 704 is relaxed, the limiting plate 703 can restrict the locking plate 6. When the limiting plate 703 slides down in the retraction groove 702, it will squeeze the elastic element 704, causing the elastic element 704 to accumulate elastic force.

[0055] In this embodiment, during the lifting and lowering process of platform 2, the locking plate 6 as... Figure 5 As shown, away from the fixed tooth 4, when the platform 2 is raised and lowered to a suitable position, an external force is applied to the limiting plate 703 to drive the limiting plate 703 to slide downward so that the limiting plate 703 will not block the locking plate 6. At this time, the free end of the locking plate 6 is swung downward so that the locking tooth 601 meshes with the fixed tooth 4. At this time, the external force is removed, and the limiting plate 703 is reset upward under the drive of the elastic element 704, restricting the movement of the locking plate 6.

[0056] When it is necessary to raise or lower platform 2 again, force is applied to limit plate 703 to drive limit plate 703 to slide downward and swing the free end of locking plate 6 upward, so that locking tooth 601 separates from fixed tooth 4. At this time, the external force can be removed and platform 2 can be raised or lowered by drive mechanism.

[0057] Example 3

[0058] This embodiment provides a construction hoist, and based on embodiment 2, it also discloses a method for separating the locking tooth 601 from the fixing tooth 4;

[0059] Please see Figure 5 In this embodiment, a torsion spring 8 is provided between the locking plate 6 and the fixing frame 5. The two ends of the torsion spring 8 are respectively connected to the locking plate 6 and the fixing frame 5. When the torsion spring 8 is relaxed, the locking tooth 601 is separated from the fixing tooth 4.

[0060] In this way, during the downward swing of the free end of the locking plate 6, the torsion spring 8 is compressed, thus accumulating elastic force. During the engagement of the locking tooth 601 and the fixed tooth 4, the torsion spring 8 maintains its elastic force. When it is necessary to separate the locking tooth 601 from the fixed tooth 4, an external force is applied to the limiting plate 703 to make the limiting plate 703 slide downward. After a gap is left between the limiting plate 703 and the locking plate 6, the elastic force of the torsion spring 8 will drive the locking plate 6 to swing upward, thereby realizing the automatic separation of the locking tooth 601 from the fixed tooth 4, reducing the number of operation steps for workers.

[0061] Example 4

[0062] This embodiment provides a construction hoist, and based on embodiment 2 and / or embodiment 3, it also discloses a method in which the locking plate 6 approaches the fixing tooth 4;

[0063] Please see Figure 5 In this embodiment, the contact position between the locking plate 6 and the limiting plate 703 is arc-shaped, and the side wall of the top of the limiting plate 703 away from the fixing tooth 4 is also arc-shaped. In this way, when the free end of the locking plate 6 swings downward and approaches the fixing tooth 4, it can push the limiting plate 703 downward. Thus, only external force needs to be applied to the locking plate 6, without the need to apply external force to the limiting plate 703 to make the limiting plate 703 slide downward, which simplifies the operation steps of the worker locking the platform 2 and makes it more convenient to use.

[0064] Example 5

[0065] This embodiment provides a construction hoist, and based on Embodiment 2 and / or Embodiment 3 and / or Embodiment 4, it also discloses a method of applying external force to the limiting plate 703 during the unlocking process of the platform 2;

[0066] A control groove 705 is provided on the side wall of the fixed base 701. The control groove 705 is connected to the retraction groove 702. A force-applying block 9 is slidably provided in the control groove 705 in the vertical direction. One end of the force-applying block 9 is connected to the limiting plate 703. When the worker applies a downward force to the force-applying block 9, the limiting plate 703 can be driven to slide downward in the retraction groove 702.

[0067] In this preferred embodiment, the end of the force-applying block 9 furthest from the limiting plate 703 is hidden in the control groove 705. This prevents workers from accidentally touching the force-applying block 9 during high-altitude operations, which could unintentionally release the restriction on the movement of the locking plate 6. The force-applying block 9 has a connecting groove 901 for connecting the tool 10. The connecting groove 901 can be designed as a slotted groove, a cross groove, a hexagonal groove, etc. The tool 10 can be placed on the platform 2, and when it is necessary to release the restriction on the movement of the locking plate 6, the tool 10 can be connected to the connecting groove 901. After the operation is completed, the tool 10 can be removed. Figure 5The image shows the tool 10 connected in the connecting slot 901. Applying force to the tool 10 can drive the force application block 9 to move, thereby driving the limit plate 703 to move.

[0068] The embodiments of the present invention have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A construction hoist, comprising: A frame (1) is provided with a platform (2) that slides vertically on the frame (1); A lifting mechanism (3) is used to drive the platform (2) to move up and down on the frame (1); Its characteristic is that it further includes a locking mechanism, the locking mechanism comprising: Fixed teeth (4), a plurality of fixed teeth (4) are provided at intervals along the vertical direction on the frame (1); A fixing frame (5) is mounted on the platform (2); A locking plate (6) is provided on the fixing frame (5). On the side wall of the locking plate (6) near the fixing teeth (4), a plurality of locking teeth (601) are provided at intervals in the vertical direction. The locking plate (6) can move relative to the fixing frame (5) so that these locking teeth (601) can engage or disengage with the plurality of fixing teeth (4). The limiting mechanism (7) is used to restrict the movement of the locking plate (6) when the locking tooth (601) meshes with the fixed tooth (4). The limiting mechanism (7) can release the restriction on the movement of the locking plate (6) under the action of external force. The first end of the locking plate (6) is rotatably connected to the fixing frame (5), and the second end of the locking plate (6) is a free end.

2. The construction hoist according to claim 1, characterized in that, The limiting mechanism (7) includes: A fixed base (701) is provided on the platform (2), and a retraction groove (702) is provided on the top of the fixed base (701); The lower end of the limiting plate (703) is slidably disposed in the retraction groove (702) in the vertical direction, and the side wall of the limiting plate (703) is in contact with the surface of the locking plate (6) away from the locking tooth (601). An elastic element (704) is used to connect the bottom surface of the limiting plate (703) and the retraction groove (702). When the elastic element (704) is relaxed, the limiting plate (703) can restrict the locking plate (6).

3. A construction hoist according to claim 2, characterized in that: A torsion spring (8) is provided between the locking plate (6) and the fixing frame (5). When the torsion spring (8) is relaxed, the locking tooth (601) is separated from the fixing tooth (4).

4. A construction hoist according to claim 2 or 3, characterized in that: When the locking plate (6) comes into contact with the limiting plate (703) as it approaches the fixing tooth (4), it can push the limiting plate (703) downward.

5. A construction hoist according to claim 2, characterized in that: The side wall of the fixed base (701) is provided with a control groove (705), which is connected to the retraction groove (702). A force-applying block (9) is slidably provided in the control groove (705), and one end of the force-applying block (9) is connected to the limiting plate (703).

6. A construction hoist according to claim 5, characterized in that: The end of the force-applying block (9) away from the limiting plate (703) is hidden in the control groove (705), and the force-applying block (9) is provided with a connecting groove (901) for a connecting tool (10).

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