Insert blank lifting appliance
By designing adjustable limit rod components and rubber pads, the inlay block blank lifting tool solves the problems of misalignment and sway during lifting, achieving stable lifting of inlay blocks of different widths and reducing wear on the clamping head plate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BAODING XINTAI SLING MFG CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-05-15
AI Technical Summary
Existing block lifting tools are prone to misalignment and swaying during the lifting process, leading to instability and making it difficult to accommodate blocks of different widths.
A lifting device for inlay block blanks was designed, including a lifting ring, a pin assembly, an upper pull arm, a lower clamping arm, a jaw plate, and a limit rod assembly. The jaw opening can be adjusted to accommodate inlay blocks of different widths through the length adjustment and locking mechanism of the limit rod assembly. Combined with the design of rubber pads and handles, the lifting stability is improved.
The adjustable jaw width of the insert block lifting tool is realized, which is suitable for clamping insert blocks of different widths and specifications, improving the stability and reliability of lifting and reducing the wear and deformation of the jaw plate.
Smart Images
Figure CN224242555U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hoisting equipment technology, and in particular to a hoisting tool for inlaid block blanks. Background Technology
[0002] A frog is the core component of a railway turnout, consisting of a frog rail and wing rails, used to guide train wheels from one track to another. Modular frogs, also known as assembled frogs, are made by combining high-manganese steel inserts with the rails rather than being cast as a single piece, facilitating maintenance and replacement of worn parts. The inserts directly bear the pressure and friction from the wheel flanges, protecting the main structure of the frog.
[0003] Inlay blocks come in a variety of shapes, one type being the inlay block needed to support train wheels, such as... Figure 5 As shown, the length of the insert block 11 is generally four to five meters. The head 111 of the insert block 11 supports the wheel's movement, and the web plate 112 is connected to the inner side of the wing rail with high-strength bolts. When machining the insert block, it needs to be hoisted for loading and unloading. Because its head 111 is not aligned with the web plate 112, the opening of the clamp-type lifting tool needs to be as close as possible to the width of the head 111. It cannot be too large, otherwise misalignment and swaying may occur during hoisting, causing instability and making it difficult to mount and position on the machine tool.
[0004] Therefore, it is necessary to develop a mounting tool for inlay block blanks to address the aforementioned defects. Utility Model Content
[0005] The purpose of this invention is to provide a mounting tool for inlay block blanks, which can adjust the width of the jaws to accommodate inlay blocks of different widths.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0007] This utility model discloses a lifting device for inlay block blanks, including a lifting ring, a pin assembly, an upper pull arm, a lower clamping arm, and a clamping head plate. It also includes a limiting rod assembly, the length of which is adjustable. One end of the limiting rod assembly is rotatably connected to the outer wall of one of the upper pull arms via a pin, and a limiting pin is provided on the outer wall of the opposite upper pull arm. The other end of the limiting rod assembly can be engaged with the limiting pin, so that the jaws between the two oppositely arranged clamping head plates open and the opening degree matches the head width of the rail inlay block.
[0008] Furthermore, the limiting rod assembly includes a limiting rod sleeve, a limiting insert rod, and a locking pin. One end of the limiting rod sleeve is rotatably connected to a pin on the outer wall of the upper pull arm. The inner end of the limiting insert rod is coaxially guided and inserted into the opening at the cantilever end of the limiting rod sleeve. A limiting locking platform is provided at the bottom of the distal end of the limiting insert rod to engage the limiting pin. A locking pin hole is provided at the cantilever end of the limiting rod sleeve. Multiple limiting holes are provided at equal intervals on the limiting insert rod. The locking pin is locked in the locking pin hole and any one of the limiting holes.
[0009] Furthermore, the bottom end of the locking pin is provided with a coaxial screw section, and the locking pin hole is set as a threaded hole on one side wall of the limiting rod sleeve, and the screw section of the locking pin is threadedly connected to the threaded hole.
[0010] Furthermore, a handle core rod is provided at the top of the distal end of the limiting rod.
[0011] Furthermore, a handle is sleeved on the handle core rod, and the outer wall of the handle is provided with anti-slip texture.
[0012] Furthermore, it also includes a pad, which is connected to the inner wall of the pliers plate by countersunk bolts.
[0013] Furthermore, a continuous positioning groove is provided in the center of the inner side wall of the clamp head plate, and a matching boss is provided on the pad at the corresponding position of the positioning groove; the countersunk bolt for installing the pad is located in the middle of the boss.
[0014] Furthermore, the pad is specifically made of hard rubber.
[0015] Compared with the prior art, the advantages of this utility model for a mounting block blank lifting device are as follows:
[0016] This utility model discloses a lifting tool for inlay block blanks. A limiting rod assembly, with one end rotatably connected by a pin, has its other end engaged with a limiting pin, allowing the two opposing upper pull arms to maintain an open angle. By adjusting the length of the limiting rod assembly, the jaw opening between the clamping plates can be adjusted to match the rail inlay block. This utility model's inlay block blank lifting tool can adjust the jaw width to accommodate inlay blocks of different widths.
[0017] Furthermore, the limiting rod assembly is formed by interlocking limiting rod sleeves and limiting rods. Adjusting the overlap length of the limiting rod inserted into the hole of the limiting rod sleeve allows for adjustment of the overall length, thus adjusting the opening angle of the upper pull arm. By adding a locking pin hole and a limiting hole, and using a locking pin for locking, the total length of the limiting rod assembly is locked, preventing compression and retraction during use. The connection between the screw section at the bottom of the locking pin and the threaded hole on the side wall of the limiting rod sleeve prevents the locking pin from falling off due to vibration during use. Adding a handle core rod at the far end of the limiting rod facilitates hand operation and prevents the limiting rod from falling off the limiting pin. The addition of a handle makes it easy for the operator to hold the device. Adding a pad to the inner wall of the pliers head plate protects the pliers head plate, reducing wear and impact deformation. The addition of a positioning groove and a boss for positioning the pad during installation ensures accurate installation and prevents it from falling off during use. By using pads made of hard rubber blocks, the web portion can also be adapted to bending and deformation, thus ensuring full contact between the pads and the web portion. Attached Figure Description
[0018] The present invention will be further described below with reference to the accompanying drawings.
[0019] Figure 1 This is a schematic diagram of the main structure of the inlay block blank lifting tool of this utility model;
[0020] Figure 2 This is a right-side structural schematic diagram of the inlay block blank lifting tool of this utility model;
[0021] Figure 3 for Figure 1 A magnified schematic diagram of a portion of the central I section;
[0022] Figure 4 This is a schematic diagram of the main structure of the limiting rod in this utility model;
[0023] Figure 5 This is a schematic diagram of the cross-sectional profile of the guide rail insert.
[0024] Explanation of reference numerals in the attached drawings: 1. Lifting ring; 2. Pin assembly; 3. Upper pull arm; 4. Lower clamping arm; 5. Clamping head plate; 501. Positioning groove; 6. Pad; 601. Bolt countersunk hole; 7. Limiting pin; 8. Limiting rod sleeve; 801. Locking pin hole; 9. Limiting insert rod; 901. Limiting hole; 902. Limiting clamping platform; 903. Handle; 10. Locking pin; 11. Rail insert block; 111. Head; 112. Web. Detailed Implementation
[0025] The core of this utility model is to provide a mounting tool for inlay block blanks, which can adjust the width of the jaws to accommodate inlay blocks of different widths.
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. 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.
[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0028] Refer to the attached diagram. Figure 1 This is a schematic diagram of the main structure of the inlay block blank lifting tool of this utility model; Figure 2 This is a right-side structural schematic diagram of the inlay block blank lifting tool of this utility model; Figure 3 for Figure 1 A magnified schematic diagram of a portion of the central I section; Figure 4 This is a schematic diagram of the main structure of the limiting rod in this utility model; Figure 5 This is a schematic diagram of the cross-sectional profile of the guide rail insert.
[0029] In one specific implementation, such as Figures 1-5As shown, the present invention's inlay block blank lifting tool is similar to existing lifting clamps in that it also includes a lifting ring 1, a pin assembly 2, an upper pull arm 3, a lower clamping arm 4, and a clamping head plate 5. The pin assembly 2 consists of four pins, which connect the top intersection points of the two sets of upper pull arms 3, the intersection points of the ends of the two upper pull arms 3 and the lower clamping arm 4, and the middle intersection point of the lower clamping arm 4, forming a spatial parallelogram structure. The lifting ring 1 is fixedly connected to the middle position of the top pin assembly 2 for connecting to the crane's hook. The clamping head plate 5 has a length not exceeding 300 mm and is fixedly connected to the bottom end of the lower clamping arm 4. A significant innovation compared to existing technologies is that the present invention's inlay block blank lifting tool also includes a limiting rod assembly, the length of which is adjustable. One end of the limiting rod assembly is rotatably connected to the outer wall of one upper pull arm 3 via a pin, and a limiting pin 7 is provided on the outer wall of the opposite upper pull arm 3. The other end of the limiting rod assembly can be engaged with the limiting pin 7, so that the jaws between the two oppositely arranged jaw plates 5 open and the opening degree matches the width of the head 111 of the rail insert block 11. Experience shows that a jaw opening degree greater than the head 111 width by no more than 10 mm allows for more stable hoisting of the rail insert block 11.
[0030] The limiting rod assembly, with one end rotatably connected by a pin, is engaged with the limiting pin 7 at the other end, allowing the two opposing upper pull arms 3 to maintain an open angle. By adjusting the length of the limiting rod assembly, the jaw opening between the clamping plates 5 can be adjusted to match the rail insert block 11. This utility model's insert block blank lifting tool can adjust the width of the jaw opening to accommodate insert blocks of different widths.
[0031] In one specific embodiment of this utility model, such as Figure 1 , Figure 2 and Figure 4 As shown, the limiting rod assembly includes a limiting rod sleeve 8, a limiting insert rod 9, and a locking pin 10. One end of the limiting rod sleeve 8 is rotatably connected to a pin on the outer wall of the upper pull arm 3, and the inner end of the limiting insert rod 9 is coaxially guided and inserted into the opening at the cantilever end of the limiting rod sleeve 8. A limiting locking platform 902 is provided at the bottom of the distal end of the limiting insert rod 9 to engage the limiting pin 7. A locking pin hole 801 is provided at the cantilever end of the limiting rod sleeve 8, and multiple limiting holes 901 are provided on the limiting insert rod 9 at equal intervals, arranged in a row along the length of the limiting insert rod 9. The locking pin 10 is locked in the locking pin hole 801 and any one of the limiting holes 901.
[0032] In one specific embodiment, the limiting holes 901 on the limiting rod 9 are three in number. When they are aligned with the locking pin holes 801 respectively, the inlay block blank lifting tool of this utility model can achieve jaw openings of 85 mm, 105 mm and 125 mm respectively, and can lift the rail inlay blocks 11 of the corresponding specifications.
[0033] The limiting rod assembly is formed by interlocking limiting rod sleeves 8 and limiting rods 9. By adjusting the overlap length of the limiting rods 9 inserted into the holes of the limiting rod sleeves 8, the overall length can be adjusted, thereby adjusting the opening angle of the upper pull arm 3. By adding locking pin holes 801 and limiting holes 901 and using locking pins 10 for locking, the total length of the limiting rod assembly is locked, preventing the situation of compression and retraction during use.
[0034] Obviously, the limiting rod assembly can also use a threaded sleeve and screw to adjust the total length. However, while the threaded adjustment method allows for more precise adjustment, it cannot achieve rapid adjustment, and in practice, there is no need to achieve such precise jaw opening adjustment. Similar simple replacement methods all fall within the protection scope of this utility model.
[0035] Specifically, the bottom end of the locking pin 10 is provided with a coaxial screw section, the diameter of which is slightly smaller. The locking pin hole 801 is a threaded hole on one side wall of the limiting rod sleeve 8, and the screw section of the locking pin 10 is threadedly connected to the threaded hole. The head of the locking pin 10 is provided with an internal hexagonal hole for using an internal hexagonal wrench.
[0036] By connecting the screw section at the bottom of the locking pin 10 to the threaded hole on the side wall of the limiting rod sleeve 8, the locking pin 10 can be prevented from falling off due to vibration during use.
[0037] In one specific embodiment of this utility model, such as Figure 1 and Figure 4 As shown, a handle core rod is provided at the top of the far end of the limiting rod 9.
[0038] Specifically, such as Figure 1 and Figure 4 As shown, a handle 903 is sleeved on the handle core rod. The handle 903 is made of rubber or plastic material, and the outer wall of the handle 903 is provided with anti-slip texture.
[0039] By adding a handle core rod at the far end of the limiting rod 9, it is convenient for operators to hold and operate the rod, and it also prevents the limiting rod 9 from falling down after bypassing the limiting pin 7. The addition of a handle 903 makes it easier for operators to hold the rod.
[0040] In one specific embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the inlay block blank lifting tool of this utility model also includes a pad block 6, which is connected to the inner side wall of the clamp head plate 5 by countersunk bolts. The pad block 6 is provided with countersunk bolt holes 601, and multiple countersunk bolt holes 601 are evenly spaced along the length direction of the clamp head plate 5.
[0041] Specifically, such as Figure 3 As shown, a continuous positioning groove 501 is centrally located on the inner sidewall of the clamp head plate 5, and a matching boss is provided on the pad block 6 at the corresponding position of the positioning groove 501. The countersunk bolt for installing the pad block 6 is located at the middle position of the boss.
[0042] Specifically, such as Figure 3 As shown, pad 6 is made of hard rubber.
[0043] By adding a pad 6 to the inner wall of the jaw plate 5, the jaw plate 5 can be protected, reducing wear and collision deformation. The addition of a positioning groove 501 and the aforementioned boss for positioning the pad 6 during installation ensures accurate installation and prevents it from easily falling off during use. The pad 6, made of hard rubber, can also adapt to bending and deformation of the web portion 112, thus ensuring full contact between the pad 6 and the web portion 112.
[0044] When using this utility model's inlay block blank lifting tool: Before lifting, first use calipers to measure the width of its head 111 and the jaw opening between the jaw plates 5. If the jaw opening is less than the width of the head 111 or more than 10 mm greater than the width of the head 111, the length of the limiting rod assembly needs to be adjusted. During adjustment, operate the overhead crane to make the jaw plates 5 contact the workshop floor. At this time, the limiting rod assembly is prevented from loosening, and the limiting rod 9 can be lifted from the limiting pin 7. Use an Allen wrench to turn the locking pin 10 to remove it from the locking pin hole 801. Pull or push the limiting rod 9 to adjust the effective length of the limiting rod assembly appropriately. At this time, observe whether the new limiting hole 901 is aligned with the locking pin hole 801. After fine-tuning the alignment, reinstall the locking pin 10 and tighten it to complete the length adjustment of the limiting rod assembly. Align the limit clamp 902 with the limit pin 7, and operate the overhead crane to lift the lifting device again. The limit clamp 902 will automatically lock onto the limit pin 7. Move the lifting device to the middle position of the rail inlay block 11 blank to be lifted, align the jaws with the head 111 and slowly lower it. The jaws will enter both sides of the web portion 112. Continue to lower the lifting device. After contacting the ground, hold the handle 903 and pull the limit rod 9 upward. Lift the lifting device again. With the limit rod assembly no longer limiting it, the bottom jaws will close, and the pad 6 and web portion 112 will fully contact and clamp the web portion 112. Continue to operate the overhead crane to lift the rail inlay block 11 blank, which will be lifted and transferred to the machine tool's worktable for clamping. The release process of this lifting device is the reverse of the clamping process, and will not be described in detail here.
[0045] This utility model of a blank lifting tool for inlay blocks employs a limiting rod assembly with one end rotatably connected by a pin, the other end of which is engaged with a limiting pin 7, allowing the two opposing upper pull arms 3 to maintain an open angle. By adjusting the length of the limiting rod assembly, the jaw opening between the jaw plates 5 can be adjusted to match the rail inlay block 11. This utility model of a blank lifting tool for inlay blocks can adjust the width of the jaws to accommodate inlay blocks of different widths. Furthermore, the limiting rod assembly is composed of interlocking limiting rod sleeves 8 and limiting inserts 9. Adjusting the overlap length of the limiting insert 9 inserted into the hole of the limiting rod sleeve 8 adjusts the overall length, thereby adjusting the opening angle of the upper pull arms 3. By adding locking pin holes 801 and limiting holes 901, and using locking pins 10 for locking, the total length of the limiting rod assembly is locked, preventing compression and retraction during use. The connection between the screw section at the bottom of the locking pin 10 and the threaded hole on the side wall of the limiting rod sleeve 8 prevents the locking pin 10 from falling off due to vibration during use. Adding a handle core rod at the far end of the limiting rod 9 facilitates hand operation and prevents the limiting rod 9 from falling down past the limiting pin 7. Adding a handle 903 facilitates hand operation. Adding a pad 6 to the inner wall of the pliers head plate 5 protects the pliers head plate 5, reducing wear and impact deformation. The addition of a positioning groove 501 and the boss for positioning the pad 6 during installation ensures accurate installation and prevents it from falling off during use. The pad 6, made of hard rubber, can also adapt to bending and deformation of the web portion 112, ensuring full contact between the pad 6 and the web portion 112.
[0046] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.
[0047] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
Claims
1. A lifting device for inlaid block blanks, comprising a lifting ring (1), a pin assembly (2), an upper pull arm (3), a lower clamping arm (4), and a clamping head plate (5), characterized in that, It also includes a limiting rod assembly, the length of which is adjustable. One end of the limiting rod assembly is rotatably connected to the outer wall of one of the upper pull arms (3) via a pin. A limiting pin (7) is provided on the outer wall of the other upper pull arm (3). The other end of the limiting rod assembly can be engaged with the limiting pin (7), so that the jaws between the two oppositely arranged clamping plates (5) open and the opening degree matches the width of the head (111) of the rail insert block (11).
2. The inlay block blank lifting device according to claim 1, characterized in that: The limiting rod assembly includes a limiting rod sleeve (8), a limiting insert rod (9), and a locking pin (10). One end of the limiting rod sleeve (8) is rotatably connected to a pin on the outer wall of the upper pull arm (3). The inner end of the limiting insert rod (9) is coaxially guided and inserted into the opening at the cantilever end of the limiting rod sleeve (8). A limiting locking platform (902) for engaging the limiting pin (7) is provided at the bottom of the far end of the limiting insert rod (9). A locking pin hole (801) is provided at the cantilever end of the limiting rod sleeve (8). A plurality of equidistant limiting holes (901) are provided on the limiting insert rod (9). The locking pin (10) is locked in the locking pin hole (801) and any one of the limiting holes (901).
3. The inlay block blank lifting tool according to claim 2, characterized in that: The bottom end of the locking pin (10) is provided with a coaxial screw section, and the locking pin hole (801) is set as a threaded hole on one side wall of the limiting rod sleeve (8), and the screw section of the locking pin (10) is threadedly connected to the threaded hole.
4. The inlay block blank lifting device according to claim 2, characterized in that: The limiting rod (9) has a handle core rod at the top of its far end.
5. The inlay block blank lifting device according to claim 4, characterized in that: A handle (903) is sleeved on the handle core rod, and the outer wall of the handle (903) is provided with anti-slip texture.
6. The inlay block blank lifting device according to claim 1, characterized in that: It also includes a pad (6), which is connected to the inner wall of the clamp plate (5) by countersunk bolts.
7. The inlay block blank lifting device according to claim 6, characterized in that: The inner sidewall of the clamp plate (5) is provided with a continuous positioning groove (501) in the center, and the pad (6) is provided with a matching boss at the corresponding position of the positioning groove (501); the countersunk bolt for installing the pad (6) is located at the middle position of the boss.
8. The inlay block blank lifting device according to claim 7, characterized in that: The pad (6) is specifically made of hard rubber.