Portal crane track reinforcement device

Abstract

The utility model discloses a portal crane rail reinforcing device relates to crane rail fixing technical field. The device includes support steel sheet, pressure rail block and fixed bolt, and the lower end fixed of support steel sheet has the preformed column of taking embedded steel bar, and the internal thread hole of preformed column top is equipped with helical spring. The locating block is equipped on support steel sheet, and the locating hole and first bolt through -hole are opened to pressure rail block. When installing, pressure rail block is positioned to the locating hole and locating block plug -in, and fixed bolt is rotated into internal thread hole after passing through pad and pressure rail block in proper order, and the helical spring is compressed to provide the sustained compression force. The utility model discloses the bolt connection of detachable replacement traditional welding, and the track maintenance and replacement are convenient, utilize the helical spring of being compressed to provide the sustained stable anti -looseness pre -tightening force, effectively resist vibration and impact, and the reliability and security of track fixed have been improved.

Description

Technical Field

[0001] This utility model relates to the field of gantry crane track reinforcement technology, specifically a gantry crane track reinforcement device. Background Technology

[0002] Gantry cranes are widely used in industrial production and logistics transportation. The installation and fixation reliability of their rails directly affects the safety and stability of the equipment operation.

[0003] Currently, the common method for fixing gantry crane rails is to use a combination of pre-embedded steel plates and welded pressure plates. Specifically, steel plates with L-shaped threaded steel bars are usually pre-embedded in the rail foundation, the rails are laid on top of the pre-embedded steel plates, and then pressure plates are welded to the pre-embedded steel plates on both sides of the rails to achieve the clamping and fixing of the rails.

[0004] However, the above-mentioned traditional fixing methods have obvious shortcomings. The connection between the pressure plate and the embedded steel plate is welded, which is a permanent fixation. Once the track needs to be replaced, adjusted or the foundation needs to be repaired, cutting operations must be carried out. This is not only cumbersome and labor-intensive, but also easily damages the original embedded structure, affecting subsequent repair and reuse.

[0005] Therefore, we propose a gantry crane track reinforcement device. Summary of the Invention

[0006] (I) Technical problem to be solved: In view of the shortcomings of the prior art, this utility model provides a gantry crane track reinforcement device. This utility model replaces welding with detachable bolt connection and uses spring to provide continuous anti-loosening pre-tightening force, realizing the reusability and anti-vibration loosening of the track reinforcement device, which can effectively solve the problems in the background art.

[0007] (II) Technical Solution: To achieve the above objectives, the technical solution adopted by this utility model is as follows: A gantry crane track reinforcement device, comprising a supporting steel plate, a rail pressing block, and fixing bolts. Embedded columns are fixedly installed at both ends of the lower outer surface of the supporting steel plate. The upper end of each embedded column extends through to the upper outer surface of the supporting steel plate. Embedded reinforcing bars are fixedly installed on the lower outer surface of each embedded column. There are two sets of both embedded columns and embedded reinforcing bars. A transverse connecting rib is fixedly installed at the bottom between the two sets of embedded reinforcing bars. An internal threaded hole is opened on the upper outer surface of the embedded column, and a helical spring is installed in the internal threaded hole. Positioning blocks are fixedly installed on both sides of the upper outer surface of the supporting steel plate. A first bolt through hole is opened at the rear end of the upper outer surface of the rail pressing block, extending through to the lower outer surface of the rail pressing block. A positioning hole is opened in the middle of the upper outer surface of the rail pressing block, extending through to the middle of the lower outer surface of the rail pressing block.

[0008] Preferably, a pad is placed on the upper part of the rail block, and a second bolt through hole is opened in the middle of the upper outer surface of the pad, which extends to the lower outer surface of the pad.

[0009] Preferably, the fixing bolt passes through the second bolt through hole of the pad block and the first bolt through hole of the rail block from top to bottom, and then is threadedly connected to the internal thread hole of the embedded column.

[0010] Preferably, the head of the fixing bolt is pressed against the upper surface of the pad to provide a preload force for clamping the track.

[0011] Preferably, in the installed state, the helical spring is in a compressed state to provide a continuous preload to the fixing bolt; in the installed state, the compression of the helical spring is 10% to 30% of its free length.

[0012] Preferably, the positioning block and the positioning hole are connected by insertion.

[0013] (III) Beneficial Effects: Compared with the prior art, this utility model provides a gantry crane track reinforcement device, which has the following beneficial effects: This gantry crane rail reinforcement device replaces the traditional welded connection with a detachable mechanical connection by using fixing bolts, rail blocks and threaded holes in the pre-embedded column. When the rail needs to be replaced or the foundation needs to be repaired, the rail blocks can be removed simply by loosening the fixing bolts. The operation is simple and quick, avoiding permanent damage to the pre-embedded structure caused by cutting operations in the traditional method, and reducing maintenance costs and workload.

[0014] This gantry crane track reinforcement device uses a helical spring installed at the bottom of the internal threaded hole of the pre-embedded column. When the fixing bolt is screwed in, the spring is compressed, keeping it in a compressed state. The helical spring provides a continuous and stable axial preload for the fixing bolt, which can effectively counteract the tendency of the bolt to loosen due to vibration and impact generated by the operation of the crane, thereby ensuring the long-term reliability of the track clamping force. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a gantry crane track reinforcement device according to the present invention.

[0016] Figure 2 This is a partial structural schematic diagram of a gantry crane track reinforcement device according to the present invention.

[0017] Figure 3 This is a schematic diagram of the rail pressure block in a gantry crane rail reinforcement device according to the present invention.

[0018] Figure 4 This is a schematic diagram of the pad block in a gantry crane track reinforcement device according to the present invention.

[0019] In the diagram: 1. Supporting steel plate; 2. Embedded column; 3. Embedded reinforcing bar; 4. Horizontal connecting stiffener plate; 5. Rail block; 6. Pad block; 7. Fixing bolt; 8. Internal threaded hole; 9. Helical spring; 10. Positioning block; 11. First bolt through hole; 12. Positioning hole; 13. Second bolt through hole. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] like Figure 1-4 As shown, the present invention provides a gantry crane track reinforcement device, which mainly includes a supporting steel plate 1, a pre-embedded component, a rail pressing block 5, a pad block 6, and a fixing bolt 7.

[0022] The embedded component consists of two embedded columns 2, embedded reinforcing bars 3 welded to the lower end of the embedded columns 2, and a transverse connecting plate 4 connecting the two embedded reinforcing bars 3. This embedded component is placed before the concrete of the track foundation is poured. After the concrete solidifies, the supporting steel plate 1 and the upper ends of the embedded columns 2 protrude from the foundation surface, forming a solid embedded foundation. An internally threaded hole 8 is provided on the outer surface of the upper end of the embedded column 2 for connecting and fixing bolts 7. A helical spring 9 is installed at the bottom of the internally threaded hole 8.

[0023] Positioning blocks 10 are fixedly installed on both sides of the upper outer surface of the supporting steel plate 1. The function of the positioning blocks 10 is to position the pressure rail blocks 5 during installation.

[0024] The rail clamping block 5 is used to directly clamp the bottom of the crane rail (not shown in the figure). A first bolt through hole 11 is provided at the rear end of the upper outer surface of the rail clamping block 5, extending from top to bottom through the rail clamping block 5. A positioning hole 12 is provided in the middle of the upper outer surface of the rail clamping block 5, also extending from top to bottom through the rail clamping block 5. The positioning hole 12 is adapted to the positioning block 10 on the supporting steel plate 1, forming a plug-in fit.

[0025] The pad 6 is placed on top of the rail block 5, and a second bolt through hole 13 is opened in its center.

[0026] The fixing bolt 7 is the final fastener. Its installation sequence is as follows: from top to bottom, it passes through the second bolt through hole 13 of the pad block 6 and the first bolt through hole 11 of the pressure rail block 5, and finally screws into the internal thread hole 8 of the embedded column 2.

[0027] The installation and working principle of this utility model are as follows: First, when pouring the foundation for the gantry crane track, the entire pre-embedded assembly (including the supporting steel plate 1, the pre-embedded column 2, the pre-embedded reinforcing bar 3, and the transverse connecting stiffener 4) is pre-embedded in the designed position. After the concrete has solidified, the upper surface of the supporting steel plate 1, the top of the pre-embedded column 2, and the positioning block 10 are exposed on the foundation surface.

[0028] Next, place the crane rail at the center of the upper surface of the support steel plate 1. Then, align the positioning hole 12 of the rail clamping block 5 with the positioning block 10 on the support steel plate 1 and insert it downwards, so that the lower part of the rail clamping block 5 is locked onto one side of the rail bottom. Then, place the pad block 6 on the rail clamping block 5, aligning its second bolt through hole 13 with the first bolt through hole 11 of the rail clamping block 5.

[0029] Finally, the fixing bolt 7 is passed through the pad 6 and the rail clamping block 5 and screwed into the internal threaded hole 8 of the embedded column 2. During the tightening of the fixing bolt 7, the tail of the bolt contacts and compresses the helical spring 9 located at the bottom of the internal threaded hole 8. When the head of the fixing bolt 7 presses against the upper surface of the pad 6, the helical spring 9 is compressed to 10% to 30% of its free length, reaching a stable state of compression. At this time, the rebound force generated by the helical spring 9 continues to act on the fixing bolt 7, providing it with an upward reaction force. This reaction force ultimately transforms into a continuous downward clamping force on the pad 6, the rail clamping block 5, and the rail, i.e., the preload. This preload effectively resists the vibration and impact generated during crane operation, preventing the fixing bolt 7 from loosening and ensuring the long-term reliability of the rail fixation.

[0030] When it is necessary to replace the track or carry out basic maintenance, simply loosen and remove the fixing bolts 7, and then remove the pad block 6 and the rail pressure block 5 in sequence. The whole process does not require cutting, is convenient and quick, and will not cause any damage to the pre-embedded structure.

[0031] Furthermore, to ensure the reliability and consistency of the performance of the helical spring 9, its parameters are optimized and limited. The helical spring 9 is preferably made of high-quality spring steel such as 60Si2MnA or 55CrSi. These materials have high fatigue strength and anti-relaxation properties, and can adapt to the long-term vibration environment of the crane rail.

[0032] Regarding the dimensional parameters of the spring: the free length (i.e., the original length when not compressed) of the helical spring 9 is preferably 1.5 to 2 times the depth of the internal threaded hole 8 to ensure sufficient compression stroke. The outer diameter of the spring is slightly smaller than the diameter of the internal threaded hole 8 to ensure that it can be freely compressed within the hole without jamming. The spring's winding ratio (i.e., the ratio of the spring's mean diameter to the spring wire diameter) is controlled between 4 and 10 to ensure good elastic properties.

[0033] More importantly, the stiffness coefficient of the helical spring 9 needs to be precisely calculated and selected, preferably within the range of 50 N / mm to 200 N / mm. This stiffness range is designed to ensure that when the fixing bolt 7 is tightened to the specified torque, the helical spring 9 can be compressed to a predetermined length (10% to 30% of its free length), generating a moderately large, stable, and reliable preload. This preload is sufficient to offset the effects of normal operating vibrations, while also preventing excessive stress on the threaded joint of the fixing bolt 7 or excessive bending moment on the embedded column 2.

[0034] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A gantry crane rail reinforcement device, comprising a supporting steel plate (1), a rail clamping block (5), and fixing bolts (7), characterized in that: Pre-embedded columns (2) are fixedly installed on both the left and right ends of the lower outer surface of the supporting steel plate (1). The upper end of the pre-embedded column (2) extends through to the upper outer surface of the supporting steel plate (1). Pre-embedded reinforcing bars (3) are fixedly installed on the lower outer surface of the pre-embedded column (2). There are two sets of both the pre-embedded column (2) and the pre-embedded reinforcing bars (3). A transverse connecting rib plate (4) is fixedly installed at the bottom between the two sets of pre-embedded reinforcing bars (3). An internal threaded hole (8) is opened on the upper outer surface of the pre-embedded column (2). A helical spring (9) is provided in the internal threaded hole (8). Positioning blocks (10) are fixedly installed on both sides of the upper outer surface of the support steel plate (1). A first bolt through hole (11) is opened at the rear end of the upper outer surface of the rail block (5). The first bolt through hole (11) penetrates to the lower outer surface of the rail block (5). A positioning hole (12) is opened in the middle of the upper outer surface of the rail block (5). The positioning hole (12) penetrates to the middle of the lower outer surface of the rail block (5).

2. The gantry crane track reinforcement device according to claim 1, characterized in that: A pad (6) is placed on the upper part of the pressure block (5). A second bolt through hole (13) is opened in the middle of the upper outer surface of the pad (6). The second bolt through hole (13) extends to the lower outer surface of the pad (6).

3. The gantry crane track reinforcement device according to claim 2, characterized in that: The fixing bolt (7) passes through the second bolt through hole (13) of the pad block (6) and the first bolt through hole (11) of the rail block (5) from top to bottom, and then is threadedly connected to the internal thread hole (8) of the embedded column (2).

4. The gantry crane track reinforcement device according to claim 3, characterized in that: The head of the fixing bolt (7) is pressed against the upper surface of the pad (6) to provide a preload force for pressing the track.

5. The gantry crane track reinforcement device according to claim 4, characterized in that: In the installed state, the helical spring (9) is in a compressed state to provide a continuous preload to the fixing bolt (7); in the installed state, the compression of the helical spring (9) is 10% to 30% of its free length.

6. The gantry crane track reinforcement device according to claim 5, characterized in that: The positioning block (10) and the positioning hole (12) are connected by insertion.

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