Adjustable wall-attached hoop and tower crane
By introducing adjustable wall clamping hoops into the attachment device of the tower crane, the problem of customization of traditional tower cranes is solved, and efficient installation of flexible adaptation to different building structures is achieved, and production and construction efficiency is improved.
Patent Information
- Application Number
- CN202421636418.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-07-10
AI Technical Summary
The attachment devices of traditional tower cranes need to be customized according to the specific size of the building support columns, resulting in low production efficiency and limited construction efficiency, and it is impossible to flexibly adapt to different building structures.
An adjustable wall-attached hoop is designed. By adding insert plates and fixing components on the inner side of the hoop, the adjustability of the internal space of the hoop is realized, adapting to different support column sizes, and simplifying the installation process.
Improves production efficiency and construction efficiency, enhances the reliability and adaptability of the clamping hoop, and can be installed without precise measurement of the support column size.
Smart Images
Figure CN223213705U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of wall-mounted clamps, and in particular relates to an adjustable wall-mounted clamp and a tower crane. Background Art
[0002] Tower cranes are the most commonly used lifting equipment on construction sites, typically used to lift building materials for on-site construction. Therefore, the installation height of tower cranes should be higher than the construction site. However, due to the limited height of tower cranes' independent mounting, the building height is often higher than the independent mounting height of the tower crane. In this situation, fixed tower cranes often require wall mounting devices at a certain height to absorb the bending moment caused by the height. Installing wall mounting devices can increase the tower crane's operating height, and with proper installation, it can reach heights of 200 or even 300 meters. When a tower crane reaches its maximum independent mounting height, additional attachment devices must be installed on the building to achieve higher lifting heights. The tower crane industry requires attachment devices that are easy to adjust, install, secure, and maintain. The attachment device consists of an attachment frame, attachment struts, and attachment lugs. The attachment frame is installed at a certain position on the standard section of the tower crane's tower body, and the attachment lugs are mounted on embedded building components. The attachment struts have lugs at each end, which are hinged to the attachment frame and lugs via pins. In order to adapt to various building structures, the attachment ear plates are fixed to the buildings in various ways, which can be divided into three situations. The first situation is that bolts are embedded in the wall of the building before pouring concrete, and the attachment ear plates are fixed to the building by tightening the bolts and nuts; the second situation is that anchor rods are embedded in the bridge piers before pouring concrete, and cantilever beams are installed on the anchor rods, and the attachment ear plates are welded to the cantilever beams; the third situation is a steel structure building. The location of the attachment ear plate needs to consider the shape and size of the support. At this time, it is necessary to install an attachment clamp, and weld the attachment ear plate on the attachment clamp.
[0003] The traditional welding ear clamp is as follows Figure 1 As shown, attached Figure 1 In the figure, 1-1 indicates the front of the clamp, 1-2 indicates the rear of the clamp, 1-3 indicates the pin assembly, 1-4 indicates the lifting ear, and 1-5 indicates the fixing bolt and nut assembly. The specific installation process of the traditional clamp is as follows: Figure 2 As shown: 1. First, select clamps of different sizes according to the size of the support column 2-1 of different buildings; 2. Measure the installation position of the clamp and mark it on the building support column; then use a lifting tool or crane to lift the front part 2-2 and the rear part 2-3 of the clamp at the same time and lift them to the marked position; then install the fixing bolt and nut assembly, and tighten the nut several times but do not tighten it; after the standard section attachment frame is connected to the clamp, fine-tune the upper and lower positions of the clamp before tightening the front and rear connecting bolts of the clamp. Figure 3This is a schematic diagram of the installation elevation of a traditional clamp. The space inside a traditional clamp is fixed. During installation, the length and width of the building's support column must be accurately measured. The measurement error should be kept within a reasonable range to prevent a large gap between the front and back of the clamp after installation. This can lead to unfavorable operating conditions such as insufficient bolt length protruding from the nut and additional axial bending moment in the bolt. Therefore, the selection of a traditional clamp should be based on the exact dimensions of the building's support column.
[0004] Traditional clamps are suitable for projects such as power plant boiler steel structures, steel bridges, and the construction of unfinished buildings. Different attachment lug fixing methods are used to adapt to the different working conditions of the building attachment point. When the attachment point is on a square or round support column and the support column cannot be pre-embedded with bolts, a clamp with welded lugs is required to secure it to the building support column. Due to the variety of buildings and their support columns, the internal dimensions of the clamp also vary. In order to adapt a clamp to support columns of various sizes, a clamp with scalable dimensions is required. Utility Model Content
[0005] Technical Problem Solved: This utility model discloses an adjustable wall clamp that incorporates an insert plate inside the clamp to adjust the clamp's internal space. This adjustable wall clamp improves the adjustability and reliability of the original clamp and eliminates the need for customers to prioritize the size of the building's support column when purchasing the clamp, thereby increasing manufacturer production efficiency and ensuring construction efficiency at customer project sites.
[0006] Technical solution:
[0007] An adjustable wall-mounted clamp comprises a clamp front portion, a clamp rear portion, and a plurality of adjustable fixing components;
[0008] The front and rear parts of the clamp are placed on the floor, and after assembly, the building support column is enclosed in a rectangular space formed by the two parts; an attachment ear plate is provided on the bottom edge of the front part of the clamp;
[0009] The front and rear portions of the clamp are provided with a plurality of through holes, each of which corresponds to a set of adjustable fixing components; one set of adjustable fixing components is provided on the bottom edge of the rear portion of the clamp, opposite to the attachment ear plate, and the other adjustable fixing components are evenly and symmetrically distributed on the two side edges of the front and rear portions of the clamp;
[0010] The adjustable fixing assembly includes a fixing bolt, a washer, a nut, a fixing steel plate and a plurality of inserts of different thicknesses;
[0011] The fixing steel plate is arranged on the inner side of the front part or the rear part of the clamp, and the fixing bolt passes through the fixing steel plate, the washer, the front part or the rear part of the clamp and is connected with the nut in sequence; the distance from the washer to the side surface of the front part or the rear part of the clamp is the same as the total thickness of the multiple plug-ins; the plug-in plate is embedded and installed between the fixing steel plate and the inner side of the front part or the rear part of the clamp.
[0012] Furthermore, the total thickness of the plugging plates of the two adjustable fixing assemblies located on the two side edges of the front part and the rear part of the clamp and symmetrical to each other is the same.
[0013] Furthermore, the two adjustable fixing components located on the two side edges of the front and rear parts of the clamp and symmetrical to each other use the same inserting plates.
[0014] Furthermore, the front portion of the clamp and the rear portion of the clamp are assembled and closed by connecting bolts.
[0015] Furthermore, a hole is provided in the middle of the fixing steel plate by using a countersink drilling process. After the bolt penetrates the fixing steel plate, the bolt head sinks into the hole of the fixing steel plate, making the contact surface between the fixing steel plate and the building support column flat.
[0016] Furthermore, the inserting plate is made of channel steel with a hole drilled in the middle.
[0017] In a second aspect, the utility model discloses a tower crane, which comprises a tower crane body and the adjustable wall-mounted clamp as described above.
[0018] Beneficial effects:
[0019] This utility model discloses an adjustable wall clamp with an insert plate added to the inner side of the clamp to adjust the clamp's internal space. This adjustable wall clamp improves the adjustability and reliability of the original clamp and eliminates the need for customers to specifically consider the size of the building's support column when purchasing the clamp, thereby increasing manufacturer production efficiency and ensuring construction efficiency at the customer's project site. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 Schematic diagram of the structure of a traditional clamp, (a) is a top view, (b) is a side view;
[0021] Figure 2 This is the installation structure diagram of the traditional clamp;
[0022] Figure 3 This is a schematic diagram of the installation elevation of the traditional clamp;
[0023] Figure 4Schematic diagram of the adjustable wall-mounted clamp structure of the present invention; (a) is a front structural diagram of the clamp, (b) is an AA cross-sectional diagram, (c) is a rear structural diagram of the clamp, and (d) is a BB cross-sectional diagram;
[0024] Figure 5 Schematic diagram of the fixed steel plate structure; (a) is the side view of the fixed steel plate, (b) is the top view of the fixed steel plate;
[0025] Figure 6 Schematic diagram of the plugboard structure; (a) is a side view of the plugboard, (b) is a top view of the plugboard;
[0026] Figure 7 This is the installation structure diagram of the adjustable wall-mounted clamp of the utility model;
[0027] Figure 8 This is a diagram showing the installation method of the adjustable wall-mounted clamp of the present invention. DETAILED DESCRIPTION
[0028] The following embodiments may enable those skilled in the art to more fully understand the present invention, but are not intended to limit the present invention in any way.
[0029] See also Figure 4 The utility model discloses an adjustable wall-mounted clamp, which comprises a clamp front portion, a clamp rear portion and a plurality of adjustable fixing components;
[0030] The front and rear parts of the clamp are placed on the floor, and after assembly, the building support column is enclosed in a rectangular space formed by the two parts; an attachment ear plate is provided on the bottom edge of the front part of the clamp;
[0031] The front and rear portions of the clamp are provided with a plurality of through holes, each of which corresponds to a set of adjustable fixing components; one set of adjustable fixing components is provided on the bottom edge of the rear portion of the clamp, opposite to the attachment ear plate, and the other adjustable fixing components are evenly and symmetrically distributed on the two side edges of the front and rear portions of the clamp;
[0032] The adjustable fixing assembly includes a fixing bolt, a washer, a nut, a fixing steel plate and a plurality of inserts of different thicknesses;
[0033] The fixing steel plate is arranged on the inner side of the front part or the rear part of the clamp, and the fixing bolt passes through the fixing steel plate, the washer, the front part or the rear part of the clamp and is connected with the nut in sequence; the distance from the washer to the side surface of the front part or the rear part of the clamp is the same as the total thickness of the multiple plug-ins; the plug-in plate is embedded and installed between the fixing steel plate and the inner side of the front part or the rear part of the clamp.
[0034] The attachment clamp of the present invention is equipped with devices such as insert plates 3 of different thicknesses, fixing bolt assemblies 4, and fixing steel plates 2 on the inner side of the clamp. By fixing the gap between the ear plate and the clamp frame and measuring the approximate size of the building support column, insert plates 3 of different thicknesses are installed, and the size of the space inside the clamp is adjusted, so that the clamp is fixed on the building support column. During the installation process, the front part 1a and the rear part 1b of the clamp must be placed on the floor first, and then the fixing steel plate 2 is attached to the inner side of the front part 1a and the rear part 1b of the clamp. The fixing bolt 4 is inserted from the middle hole of the fixing steel plate and passes through the front part 1a or the rear part 1b of the clamp. Washers and nuts are installed to ensure that the distance from the washer to the side of the front part or the rear part of the clamp is the same as the total thickness of the insert plates to be installed. Then, the insert plates 3 are installed. Insert plates 3 of different thicknesses are selected in advance. The installation order should be followed from thick to thin. The thicker insert plates 3 should be installed first, and then the middle ones. The thickness of the plug plate 3 is installed first, and the thinner plug plate 3 is installed last. After installing the plug plate 3, the space inside the clamp should fit the surface of the building support column as much as possible. The same operation steps are performed on the other two sides to ensure that the number and thickness of the plug plates 3 added on the left and right sides of the inner side of the clamp are consistent. Then, pre-tighten the bolts opposite the attachment ear plate according to 50% of the specified bolt pre-tightening force, and then pre-tighten the bolts on the left and right sides according to 100% of the specified bolt pre-tightening force. Finally, pre-tighten the bolts opposite the attachment ear plate according to 100% of the specified bolt pre-tightening force.
[0035] The clamp with welded attachment ear plate refers to a device used to fix the wall support rod to the supporting column of the building. The wall ear seat is welded on one side and the left and right sides are fixed and clamped with bolts.
[0036] See also Figure 8 The installation process of the adjustable wall clamp of the present invention can be divided into two situations. One situation is the same as the traditional clamp, and the front and rear parts of the clamp are lifted at the same time by a crane for assembly; the other situation is to tighten the building support column with fixing bolts, and manually adjust the front and rear parts of the clamp by knocking up and down. After the connecting bolts are installed, the fixing nuts are tightened.
[0037] Figure 5 This is a schematic diagram of the fixed steel plate structure. The center of the fixed steel plate is countersunk. After the bolts penetrate the fixed steel plate, the bolt heads sink into the plate, ensuring a smooth contact surface between the fixed steel plate and the building support column. Inserts can be added between the fixed steel plate and the clamp structure to adjust the internal space of the clamp.
[0038] Figure 6 The diagram below shows the structure of the insert plate. When a large number of pads are required, the insert plates can be replaced by drilling holes in the middle of the channel steel.
Claims
1. An adjustable wall-mounted clamp, characterized in that: The adjustable wall-mounted clamp comprises a clamp front portion, a clamp rear portion, and a plurality of adjustable fixing components; The front and rear parts of the clamp are placed on the floor, and after assembly, the building support column is enclosed in a rectangular space formed by the two parts; an attachment ear plate is provided on the bottom edge of the front part of the clamp; The front and rear portions of the clamp are provided with a plurality of through holes, each of which corresponds to a set of adjustable fixing components; one set of adjustable fixing components is provided on the bottom edge of the rear portion of the clamp, opposite to the attachment ear plate, and the other adjustable fixing components are evenly and symmetrically distributed on the two side edges of the front and rear portions of the clamp; The adjustable fixing assembly includes a fixing bolt, a washer, a nut, a fixing steel plate and a plurality of inserts of different thicknesses; The fixing steel plate is arranged on the inner side of the front part or the rear part of the clamp, and the fixing bolt passes through the fixing steel plate, the washer, the front part or the rear part of the clamp and is connected with the nut in sequence; the distance from the washer to the side surface of the front part or the rear part of the clamp is the same as the total thickness of the multiple plug-ins; the plug-in plate is embedded and installed between the fixing steel plate and the inner side of the front part or the rear part of the clamp.
2. The adjustable wall-mounted clamp according to claim 1, characterized in that: The total thickness of the plugging plates of the two adjustable fixing components that are located on the two side edges of the front part and the rear part of the clamp and are symmetrical to each other is the same.
3. The adjustable wall-mounted clamp according to claim 1, characterized in that: The two adjustable fixing components located on the two side edges of the front part and the rear part of the clamp and symmetrical to each other use the same plugging plates.
4. The adjustable wall-mounted clamp according to claim 1, characterized in that: The front portion of the clamp and the rear portion of the clamp are assembled and closed by connecting bolts.
5. The adjustable wall-mounted clamp according to claim 1, characterized in that: A hole is provided in the middle of the fixing steel plate by using a countersink drilling process. After the bolt penetrates the fixing steel plate, the bolt head sinks into the hole of the fixing steel plate, making the contact surface between the fixing steel plate and the building support column flat.
6. The adjustable wall-mounted clamp according to claim 1, characterized in that: The inserting plate is made of channel steel with a hole drilled in the middle.
7. A tower crane, characterized in that: The tower crane comprises a tower crane body and the adjustable wall-mounted clamp as described in any one of claims 1 to 6.
8. The tower crane according to claim 7, wherein: The total thickness of the plugging plates of the two adjustable fixing components that are located on the two side edges of the front part and the rear part of the clamp and are symmetrical to each other is the same.
9. The tower crane according to claim 7, wherein: A hole is provided in the middle of the fixing steel plate by using a countersink drilling process. After the bolt penetrates the fixing steel plate, the bolt head sinks into the hole of the fixing steel plate, making the contact surface between the fixing steel plate and the building support column flat.
10. The tower crane according to claim 7, wherein: The inserting plate is made of channel steel with a hole drilled in the middle.