Lifting device for multi-layer rack guide plate

Abstract

The utility model discloses a lifting device for a multilayer rack guide plate, which comprises a lifting plate welding part, a pressing mechanism and four connecting guide rod components, a pressing nut of the lifting plate welding part is fixedly welded at the center of a lifting plate, the bottoms of lifting lugs are respectively fixedly welded at two ends of the lifting plate, and the lifting plate welding part is fixedly welded at the bottom of the lifting plate. The steering fixing seats are welded and fixed to the four corners of the lifting plate respectively. The lower end of a connecting guide rod of the connecting guide rod assembly is vertically welded to the bearing bottom foot, the upper portion of the connecting guide rod is clamped and fixed to the corner of the lifting plate through a bearing nut, and a connecting guide rod locking mechanism is further arranged between the connecting guide rod and the steering fixing base. The lower portion of a pressing screw of the pressing mechanism is screwed into a pressing nut, and the end of the lower end of the pressing screw is pressed on a pressing base on the upper side of the middle of one layer of the top of the multi-layer rack guide plate. According to the lifting device, the labor intensity of lifting the multi-layer rack guide plate is greatly reduced, the lifting efficiency is improved, and the safety of lifting the multi-layer rack guide plate at one time is remarkably improved.

Description

Technical Field

[0001] This utility model relates to a special lifting tool for long steel plates, and more particularly to a lifting device for multi-layer stacked long steel plates, belonging to the field of lifting tooling technology. Background Technology

[0002] The frame guide plate is a rectangular steel plate used for welding the diesel engine frame, such as... Figure 1 As shown, a certain type of engine frame guide plate measures 3300mm × 400mm × 60mm and weighs 620kg. A diesel engine frame requires the welding of multiple frame guide plates. During the assembly and welding of the diesel engine frame, lifting a single frame guide plate each time would consume a significant amount of manpower and time, resulting in very low efficiency. If multiple frame guide plates are stacked for lifting, the lifting wire rope cannot be securely fixed, and during lifting, the wire rope moves first and then presses against both sides of the frame guide plate, causing wear on both the lifting wire rope and the side edges of the frame guide plate, posing a significant safety hazard. Furthermore, the process of attaching the lifting wire ropes to the frame guide plate and finding the lifting balance point is also very cumbersome. It requires raising one side of the frame guide plate and placing wooden blocks underneath, then raising the other side and placing wooden blocks underneath again. Only then can the lifting wire ropes be attached to both ends of the frame guide plate. The position of the lifting wire ropes also needs to be adjusted to keep the center of gravity of the frame guide plate in the middle of the two lifting wire ropes. This process consumes a lot of manpower and time. If the lifting wire ropes are not placed properly, the frame guide plate can easily slip during lifting, causing a serious safety accident. Utility Model Content

[0003] The purpose of this invention is to provide a lifting device for multi-layer machine frame guide plates, thereby improving the lifting efficiency and ensuring lifting safety.

[0004] This utility model is achieved through the following technical solution:

[0005] A lifting device for a multi-layer rack guide plate includes a lifting plate assembly, a clamping mechanism, and four connecting guide rod assemblies. The lifting plate assembly includes a lifting plate, a clamping nut, two lifting lugs, and four steering fixing seats. The clamping nut is welded and fixed to the center of the lifting plate, the bottom of the lifting lugs is welded and fixed to both ends of the lifting plate, and the steering fixing seats are welded and fixed to the four corners of the lifting plate. The connecting guide rod assembly includes a connecting guide rod, a load-bearing foot, and two load-bearing nuts. The top of the connecting guide rod has a square handle, the upper part has a threaded structure, and the lower end of the connecting guide rod is perpendicular to the load-bearing foot. Welding; the upper part of the connecting guide rod passes through the corner of the lifting plate and the steering fixing seat from bottom to top. By tightening the load-bearing nuts on the upper side of the steering fixing seat and the lower side of the corner of the lifting plate, the connecting guide rod is clamped and fixed on the corner of the lifting plate. A connecting guide rod locking mechanism is also provided between the connecting guide rod and the steering fixing seat. The clamping mechanism includes a clamping screw and a clamping seat. The upper end of the clamping screw is vertically welded to the middle of the horizontally placed handle. The lower part of the clamping screw is screwed into the clamping nut. The lower end of the clamping screw is pressed against the clamping seat. The clamping seat is located on the upper side of the middle of the top layer of the multi-layer frame guide plate.

[0006] The objective of this utility model can also be further achieved through the following technical measures.

[0007] Furthermore, the connecting guide rod locking mechanism includes a longitudinal waist-shaped groove recessed into the upper thread of the connecting guide rod and two locking screws. The steering fixing seat is a square plate, and the locking screws are screwed into the adjacent sides of the square plate respectively. When the lifting plate is raised or lowered, the end of one locking screw is embedded in the longitudinal waist-shaped groove to guide the vertical movement of the lifting plate. When the lifting plate stops raising or lowering, the end of one locking screw presses against the bottom of the longitudinal waist-shaped groove to lock the connection position of the lifting plate and the connecting guide rod. After the connecting guide rod drives the load-bearing foot to rotate 90°, the load-bearing foot is perpendicular to the lifting plate. At this time, the other locking screw is tightened, and the end of the other locking screw presses against the bottom of the longitudinal waist-shaped groove, locking the connecting guide rod and the load-bearing foot in the lifting position.

[0008] Furthermore, the lower end of the clamping screw is a hemispherical surface, and the clamping seat is a stepped plate structure consisting of an upper ball head seat and a lower base plate, with the upper part being smaller and the lower part larger. The top of the upper ball head seat is provided with a hemispherical recess, the curvature of which matches the curvature of the hemispherical surface. The hemispherical head of the lower end of the clamping screw is pressed into the hemispherical recess of the clamping seat.

[0009] Furthermore, the thickness H1 of the load-bearing base is less than the thickness H2 of the padding wood at the bottom of the multi-layer frame guide plate.

[0010] Furthermore, the connecting guide rod is made of 40Cr steel with a heat treatment hardness of HRC30-34; the load-bearing nut is made of 35# steel with a heat treatment hardness of HB270-290.

[0011] This utility model features a simple structure and safe and convenient use. It employs a structure where load-bearing nuts on the upper part of the connecting guide rod clamp the four corners of the lifting plate. The vertical position of the load-bearing feet can be adjusted by changing the position of the load-bearing nuts on the upper part of the connecting guide rod, based on the number of stacked rack guide plates and their total thickness. This utility model can be applied to the lifting of rack guide plates with different stacking levels, offering good versatility. Tightening the clamping screws before lifting multiple layers of rack guide plates makes operation very convenient. This utility model significantly reduces the labor intensity of lifting multi-layer rack guide plates, improves lifting efficiency, and significantly enhances the safety of lifting multiple layers of rack guide plates at once.

[0012] The advantages and features of this utility model will be illustrated and explained through the following non-limiting description of preferred embodiments, which are given by way of example only with reference to the accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a top view of the frame guide plate;

[0014] Figure 2 This is a perspective view of the present invention;

[0015] Figure 3 yes Figure 2 A magnified view from direction A;

[0016] Figure 4 This is a front view of the guide plate for assembling and hoisting multi-layer machine frames using this utility model;

[0017] Figure 5 This is a magnified 3D view of the upper part of the connecting guide rod. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] like Figures 2-5As shown, this utility model includes a lifting plate assembly 1, a clamping mechanism 2, and four connecting guide rod assemblies 3. The lifting plate assembly 1 includes a lifting plate 11, a clamping nut 12, two lifting lugs 13, and four steering fixing seats 14. The clamping nut 12 is welded and fixed to the center of the lifting plate 11. The bottom of the lifting lugs 13 is welded and fixed to both ends of the lifting plate 11. The steering fixing seats 14 are welded and fixed to the four corners of the lifting plate 11. The connecting guide rod assembly 3 includes a connecting guide rod 31, a load-bearing foot 32, and two load-bearing nuts 33. The top of the connecting guide rod 31 is provided with a square handle 311 for rotating the connecting guide rod 31. The upper part has a threaded structure. The opening at one end of the load-bearing foot 32 needs to be beveled with a K-type bevel. The lower end of the connecting guide rod 31 is inserted into the opening of the load-bearing foot 32, and the two are welded vertically together, which improves the strength of the connecting guide rod assembly 3 and ensures the safe lifting of multi-layer frame guide plates. The upper part of the connecting guide rod 31 passes through the corner of the lifting plate 11 and the steering fixing seat 14 from bottom to top. The connecting guide rod 31 is clamped and fixed on the corner of the lifting plate 11 by turning the load-bearing nuts 33 on the upper side of the steering fixing seat 14 and the lower side of the corner of the lifting plate 11 respectively.

[0020] The clamping mechanism 2 includes a clamping screw 21 and a clamping seat 22. The upper end of the clamping screw 21 is vertically welded to the middle of a horizontally placed handle 211, and the lower part of the clamping screw 21 is screwed into a clamping nut 12. The lower end of the clamping screw 21 is a hemispherical surface. The clamping seat 22 is a stepped plate structure consisting of an upper ball head seat 221 and a lower base plate 222, with the upper part smaller than the lower part. The top of the upper ball head seat 221 has a hemispherical recess 223, the curvature of which matches the curvature of the hemispherical surface. The hemispherical head 211 at the lower end of the clamping screw 21 is pressed into the hemispherical recess 223 of the clamping seat 22. The clamping seat 22 is located on the upper side of the middle of the top layer of the multi-layer rack guide plate. This structure reduces the pressure on the top rack guide plate 10, preventing indentations from forming on its surface and affecting the surface quality of the rack guide plate 10.

[0021] A connecting guide rod locking mechanism 4 is also provided between the connecting guide rod 31 and the steering fixing seat 14. This mechanism includes a longitudinal oblong groove 41 recessed into the upper thread of the connecting guide rod 31 and two locking screws 42. The steering fixing seat 14 is a square plate, and the locking screws 42 are screwed into adjacent sides of the square plate. When the lifting plate 11 is raised or lowered, the end of one locking screw 42 extends into the longitudinal oblong groove 41 to guide the vertical movement of the lifting plate 11. When the lifting plate 11 stops raising or lowering, the connecting guide rod 31 drives the load-bearing foot 32 to rotate 90°, making the load-bearing foot 32 perpendicular to the lifting plate 11. At this time, the other locking screw 42 is tightened, and its end presses against the bottom of the longitudinal oblong groove 41, locking the connecting guide rod 31 and the load-bearing foot 32 in their rotated positions, providing a reliable guarantee for the smooth lifting of multi-layer connecting guide plates.

[0022] The thickness H1 of the load-bearing foot is less than the thickness H2 of the pad at the bottom of the multi-layer rack guide plate, which makes it easier for the load-bearing foot 32 to rotate 90° and enter the bottom of the multi-layer rack guide plate 10.

[0023] The connecting guide rod 31 is made of 40Cr steel with a heat treatment hardness of HRC30-34; the load-bearing nut 32 is made of 35# steel with a heat treatment hardness of HB270-290. The different materials and heat treatment hardnesses of the connecting guide rod 31 and the load-bearing nut 32 ensure that they are difficult to loosen due to seizing after bearing load.

[0024] Before lifting, both ends of the multi-layer frame guide plate were supported on the wooden blocks 20. Figure 2 As shown by the double-dotted line, the load-bearing feet 32 ​​at the bottom of the connecting guide rod 31 are parallel to the lifting plate 11. Then proceed with the following steps:

[0025] 1) First, hoist the present invention to the middle of the multi-layer rack guide plate. Then, loosen one of the locking screws 42 that is locked to the guide rod 31. The end of the locking screw 42 will disengage from the corresponding longitudinal slot 41 and unlock the guide rod 31. Next, use a wrench to clamp the square handle 311 and rotate the guide rod 31 so that the load-bearing feet 32 ​​rotate 90° and extend into the lower side of the bottom rack guide plate 10 of the multi-layer rack guide plate.

[0026] 2) Tighten the other locking screw 42 until the end of one locking screw 42 extends into the longitudinal slot 41 to guide the vertical movement of the lifting plate 11. Then, determine the distance between the lifting plate 11 and the top surface of the top layer of the multi-layer rack guide plate 10 according to the height of the multi-layer rack guide plate. Fix the lifting plate 11 to the required position on the upper side of the multi-layer rack guide plate by tightening the load-bearing nuts 33 on the upper side of the steering fixing seat 14 and the lower side of the corner of the lifting plate 11 respectively.

[0027] 3) Next, place the clamping seat 22 on the upper middle part of the frame guide plate 10 at the top layer of the multi-layer frame guide plate, and then screw the lower part of the clamping screw 21 into the clamping nut 12, so that the lower end of the clamping screw 21 is pressed into the upper ball head seat 221 of the clamping seat 22. The two sides of the middle part of the frame guide plate 10 at the bottom layer of the multi-layer frame guide plate abut against the load-bearing feet 32 ​​respectively, so that the multi-layer frame guide plate is clamped in this utility model, and the multi-layer frame guide plate can be hoisted by this utility model.

[0028] In addition to being used for hoisting multi-layer machine frame guide plates, this utility model can also be used for hoisting other stacked long strip workpieces by simply replacing the connecting guide rod.

[0029] In addition to the above embodiments, the present invention may have other implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by the present invention.

Claims

1. A lifting device for a multi-layer frame guide plate, characterized in that, The system includes a lifting plate assembly, a clamping mechanism, and four connecting guide rod assemblies. The lifting plate assembly comprises a lifting plate, a clamping nut, two lifting lugs, and four steering fixing seats. The clamping nut is welded and fixed to the center of the lifting plate. The lifting lugs are welded and fixed to the bottoms of both ends of the lifting plate, and the steering fixing seats are welded and fixed to the four corners of the lifting plate. The connecting guide rod assemblies include connecting guide rods, load-bearing feet, and two load-bearing nuts. The top of the connecting guide rod has a square handle and a threaded upper part. The lower end of the connecting guide rod is perpendicularly welded to the load-bearing feet. The upper part passes through the corner of the lifting plate and the steering fixing seat from bottom to top. By tightening the load-bearing nuts on the upper side of the steering fixing seat and the lower side of the corner of the lifting plate, the connecting guide rod is clamped and fixed on the corner of the lifting plate. A connecting guide rod locking mechanism is also provided between the connecting guide rod and the steering fixing seat. The clamping mechanism includes a clamping screw and a clamping seat. The upper end of the clamping screw is vertically welded to the middle of the horizontally placed handle. The lower part of the clamping screw is screwed into the clamping nut. The lower end of the clamping screw is pressed against the clamping seat. The clamping seat is located on the upper side of the middle of the top layer of the multi-layer frame guide plate.

2. The lifting device for the multi-layer frame guide plate as described in claim 1, characterized in that, The connecting guide rod locking mechanism includes a longitudinal slot recessed into the upper thread of the connecting guide rod and two locking screws. The steering fixing seat is a square plate, and the locking screws are screwed into the adjacent sides of the square plate respectively. When the lifting plate is raised or lowered, the end of one locking screw extends into the longitudinal slot to guide the vertical movement of the lifting plate. When the lifting plate stops raising or lowering, the end of one locking screw presses against the bottom of the longitudinal slot to lock the connection position of the lifting plate and the connecting guide rod. After the connecting guide rod drives the load-bearing foot to rotate 90°, the load-bearing foot is perpendicular to the lifting plate. At this time, tighten the other locking screw, and the end of the other locking screw presses against the bottom of the longitudinal slot to lock the connecting guide rod and the load-bearing foot in the lifting position.

3. The lifting device for the multi-layer frame guide plate as described in claim 1, characterized in that, The lower end of the clamping screw is a hemispherical surface, and the clamping seat is a stepped plate structure consisting of an upper ball head seat and a lower base plate, with the upper part being smaller and the lower part larger. The top of the upper ball head seat is provided with a hemispherical recess, and the curvature of the hemispherical recess matches the curvature of the hemispherical surface. The hemispherical head of the lower end of the clamping screw is pressed into the hemispherical recess of the clamping seat.

4. The lifting device for the multi-layer frame guide plate as described in claim 1, characterized in that, The thickness of the load-bearing base H1 is less than the thickness of the padding wood at the bottom of the multi-layer frame guide plate H2.

5. The lifting device for the multi-layer frame guide plate as described in claim 1, characterized in that, The connecting guide rod is made of 40Cr steel, and its heat treatment hardness is HRC30~34; the load-bearing nut is made of 35# steel, and its heat treatment hardness is HB270~290.

Images