A flip trolley with stepless adjustment of the lifting point

Abstract

The present application relates to the technical field of turnover spreader, and discloses a kind of turnover spreader of stepless adjustment lifting point, including turnover spreader total assembly, turnover spreader total assembly uses a main beam, main beam rear end connects chain hoist B, is connected on the rear lifting plate of product rear end interface;The front side of the left and right ends of main beam is respectively connected with the two ends of the fixed end beam of turnover cross beam using chain hoist A and chain hoist C;The upper end of the middle of main beam is connected with automobile crane hook;The left and right ends of main beam are connected with chain hoist B and chain hoist C;The lower end hook of chain hoist A is connected with turnover cross beam through adapter shaft.The turnover cross beam of the present application, by the relative movement of fixed end beam and moving end beam, can be axially stepless adjusted lifting position, lifting position is more accurate, and the turnover process is more labor-saving, and the present application is only front end interface with product, and belongs to cantilever beam structure;Main beam adopts triangular form, and turnover cross beam can be more labor-saving to realize product inclination 45 ° or product turnover to vertical.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of turnover spreader, in particular to a turnover spreader with stepless adjustment of lifting point. BACKGROUND

[0002] Some long products are often placed along the length direction (such as the axial direction of a rotary body) for transportation to the use site, and are lifted by a single hook of a truck crane to realize horizontal lifting and turnover to the vertical state by cooperating with a turnover spreader. Since the single hook lifting is used, the center of gravity of the product (the combined center of gravity of the spreader and the product) needs to be found to stably and labor-savingly realize the turnover function. Some lifted products, such as engines, have complex structures and numerous pipelines, and the deviation between the theoretical center of gravity and the actual center of gravity is large. When the product has a large mass, the lifting point arranged according to the theoretical center of gravity has a large distance from the actual center of gravity, and the turnover operation is labor-consuming, time-consuming and unstable. Therefore, the center of gravity needs to be adjusted on the turnover spreader to make the actual lifting point coincide with the actual center of gravity of the product as much as possible, so as to complete the turnover process from the horizontal to the vertical state with less labor and stably.

[0003] Generally, a turnover spreader usually uses a main beam, the upper end of the middle of the main beam is connected with a hook of a truck crane, the left and right ends of the main beam are connected with lifting belts (one on each side) which are connected with turnover cross beams downward, the position where the lifting belts are connected with the turnover cross beams is the lifting point (located directly below the hook of the truck crane), and the turnover cross beam is fixed on a product interface and is provided with a function of adjusting the position of the lifting point.

[0004] Generally, the conventional turnover cross beam is provided with a plurality of connecting holes of connecting shafts with a certain spacing (about 50 mm) on the turnover cross beam body at the combined center of gravity position of the product and the spreader and in front and back of the combined center of gravity position. When it is found that the product cannot be lifted horizontally or the turnover is difficult during trial lifting of the product, the product needs to be lowered, the installation positions of the connecting shafts and the center of gravity adjustment holes need to be changed, and the product needs to be lifted again until the current lifting point can lift the product horizontally and turn it to the vertical state. In this way, the product that has been lifted needs to be lowered to adjust the position of the lifting point, and sometimes the adjustment needs to be repeated, which is time-consuming and labor-consuming, and stepless adjustment cannot be realized. SUMMARY

[0005] The present application aims at solving the problems in the prior art and provides a turnover spreader with stepless adjustment of lifting point.

[0006] To achieve the above object, the present application provides the following technical scheme.

[0007] A turnover spreader with stepless adjustment of lifting point comprises a turnover spreader assembly, the turnover spreader assembly uses a main beam, the rear end of the main beam is connected with a hand chain block B, and the hand chain block B is connected to a rear lifting plate of a product rear end interface.

[0008] The left and right ends of the main beam are connected with the two ends of the fixed end beam of the turnover cross beam by the hoist A and hoist C respectively.

[0009] The upper end of the middle of the main beam is connected with the hook of the automobile crane.

[0010] The left and right ends of the main beam are connected with the hoist B and hoist C.

[0011] The lower end of the hoist A is connected with the turnover cross beam through the adapter shaft.

[0012] As a preferred technical solution, the main beam is triangular.

[0013] As a preferred technical solution, the main beam has one on the left and one on the right.

[0014] As a preferred technical solution, the turnover cross beam is composed of the fixed end beam of the turnover cross beam and the movable end beam of the turnover cross beam.

[0015] As a preferred technical solution, the front end of the fixed end beam of the turnover cross beam is connected on the product interface.

[0016] The movable end beam of the turnover cross beam is installed in the fixed end beam of the turnover cross beam.

[0017] As a preferred technical solution, the upper and lower end faces between the fixed end beam of the turnover cross beam and the movable end beam of the turnover cross beam are installed with the slide rail and the slide block.

[0018] As a preferred technical solution, the front end of the movable end beam of the turnover cross beam is installed with the nut and the lead screw.

[0019] As a preferred technical solution, the fixed end beam of the turnover cross beam is provided with the clamping groove to clamp the lead screw.

[0020] As a preferred technical solution, the lead screw is provided with the square head at the front end, the lead screw is rotated by the ratchet wrench, the relative movement of the fixed end beam of the turnover cross beam and the movable end beam of the turnover cross beam is realized, and the hole is drilled on the corresponding movable end beam of the turnover cross beam at the synthetic centroid position.

[0021] As a preferred technical solution, the fixed end beam of the turnover cross beam is provided with the long circular hole, the adapter shaft passes through the long circular hole of the fixed end beam of the turnover cross beam and the hole of the movable end beam of the turnover cross beam, and the guide chain hook of the main beam is connected.

[0022] Compared with the prior art, the present application has the following advantages:

[0023] Firstly, the turnover lifting device can adjust the lifting position with load, reduce the operation time of putting down the product, disassembling, installing the lifting shaft and repeatedly debugging.

[0024] Second, in the present invention, the turnover beam structure in the present lifting appliance can axially stepless adjust the lifting position through the relative movement of the fixed end beam and the moving end beam, the lifting position is more accurate, and the turnover process is more labor-saving.

[0025] Third, in the present invention, the fixed end beam in the turnover beam belongs to a cantilever beam structure, and as a main bearing component, the fixed end beam structure has a reasonable welding structure, a feasible construction process and sufficient strength.

[0026] Fourth, in the present invention, the triangular form welding structure adopted by the main beam reasonably completes the working requirements of the present condition.

[0027] Fifth, in the present invention, the stepless adjustment turnover shaft of the present invention coincides with the center of mass, cooperates with five hand-operated hoists, and can realize stable product turnover, has the characteristics of stability, labor-saving and safety.

[0028] Sixth, in the present invention, the present turnover lifting appliance structure can realize the stepless adjustment of the lifting position with load, reduces the operation time of putting down the product, disassembling, installing the lifting point and repeated debugging.

[0029] Seventh, in the present invention, the turnover beam of the present lifting appliance can axially stepless adjust the lifting position through the relative movement of the fixed end beam and the moving end beam, the lifting position is more accurate, and the turnover process is more labor-saving.

[0030] Eighth, in the present invention, the present turnover beam only has a front end interface with the product, and belongs to a cantilever beam structure; the main beam adopts a triangular form, and the turnover beam can more labor-savingly realize the product inclination of 45° or the product turnover to vertical. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 A front view structural schematic diagram of a stepless adjustment lifting point turnover lifting appliance provided by the present invention;

[0032] Figure 2 A left view structural schematic diagram of a stepless adjustment lifting point turnover lifting appliance provided by the present invention;

[0033] Figure 3 A top view structural schematic diagram of a stepless adjustment lifting point turnover lifting appliance provided by the present invention;

[0034] Figure 4 A structural schematic diagram of a partial section of a stepless adjustment lifting point turnover lifting appliance provided by the present invention.

[0035] In the figure: 1, main beam; 2, fixed end beam of the turnover cross beam; 3, moving end beam of the turnover cross beam; 4, adapter shaft; 5, locking bolt; 6, rear lifting plate; 7, hand-operated hoist A; 8, hand-operated hoist B; 9, hand-operated hoist C; 10, lead screw; 11, lead screw nut; 12, clamping groove; 13, square head at the front end of the lead screw; 14, interface screw; 15, sliding rail; 16, sliding block; 17, fixed end beam blocking plate. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort fall within the scope of the present application.

[0037] EMBODIMENT

[0038] Some long-size products are often placed along the length direction (such as an axis direction of a rotary body) for transportation to a use site, and are hoisted by a single hook of a truck crane, and are combined with a turnover spreader to realize horizontal hoisting and turnover to a vertical state. Since the hoisting is performed by a single hook, the center of mass of the product (the combined center of mass of the spreader and the product) needs to be found to stably and labor-savingly realize the turnover function. Some hoisted products, such as engines, have a large deviation between the theoretical center of mass and the actual center of mass due to complex structures and numerous pipelines. When the product has a large mass, the hoisting point arranged according to the theoretical center of mass has a large distance from the actual center of mass, and the turnover operation is relatively labor-consuming, time-consuming and unstable. Therefore, the center of mass needs to be adjusted on the turnover spreader to make the actual hoisting point coincide with the actual center of mass of the product as much as possible, so as to complete the turnover process from the horizontal to the vertical in a labor-saving and stable manner.

[0039] Generally, a turnover spreader usually uses a main beam, the upper end of the middle of the main beam is connected to a hook of a truck crane, and the left and right ends of the main beam are connected to downward adapter slings (one on the left and one on the right) which are further connected to a turnover cross beam. The position where the sling is connected to the turnover cross beam is the hoisting point (located directly below the hook of the truck crane). The turnover cross beam is fixed on a product interface and is provided with a function of adjusting the position of the hoisting point.

[0040] The conventional turnover beam is generally provided with a plurality of adapter shaft connecting holes at a certain interval (about 50 mm) on the turnover beam body at the synthetic center position of the product and the lifting appliance and front and back, when it is found that the product cannot be lifted horizontally or is difficult to be turned over when the product is lifted for trial, the product needs to be lowered, the installation position of the adapter shaft and the center adjusting hole is changed, the product is lifted for trial again until the current lifting point can lift the product relatively horizontally and turn over to the vertical state, the lifting position is changed, the product that has been lifted needs to be lowered to realize the function of adjusting the lifting point position, and sometimes the adjustment needs to be repeated, which is time-consuming and laborious and cannot realize stepless adjustment.

[0041] The inventor adopts the following technical scheme to solve the above technical problems, and the specific embodiments are as follows:

[0042] Please refer to Figures 1-4 The embodiment of the present application provides a technical scheme:

[0043] As Figures 1-4 shown, a turnover lifting appliance for stepless adjustment of lifting points comprises a turnover lifting appliance assembly, the turnover lifting appliance assembly uses a main beam 1, the main beam 1 is connected with a hand-operated hoist B8 at the rear end and connected with a rear lifting plate 6 at the rear end interface of the product;

[0044] The front side of the left and right ends of the main beam 1 is connected with a hand-operated hoist A7 and a hand-operated hoist C9 respectively and connected with the two ends of a fixed end beam 2 of a turnover beam;

[0045] The middle upper end of the main beam 1 is connected with a car lifting hook;

[0046] The adapter hand-operated hoist B8 and the hand-operated hoist C9 at the left and right ends of the main beam 1 can adjust the horizontal height;

[0047] The lower end hook of the hand-operated hoist A7 is connected with the turnover beam through an adapter shaft 4.

[0048] The main beam 1 is in a triangular shape.

[0049] The main beam 1 is one on the left and one on the right.

[0050] The turnover beam is composed of a fixed end beam 2 of the turnover beam and a movable end beam 3 of the turnover beam.

[0051] The front end of the fixed end beam 2 of the turnover beam is connected with the product interface;

[0052] The movable end beam 3 of the turnover beam is installed in the fixed end beam 2 of the turnover beam.

[0053] The upper and lower end faces between the fixed end beam 2 of the turnover beam and the movable end beam 3 of the turnover beam are installed with a slide rail 15 and a slide block 16, and there are one set of slide rail and slide block above and below.

[0054] Wherein, the front end of the moving end beam 3 of the turnover cross beam is provided with a screw nut 11 and a screw rod 10.

[0055] Wherein, the fixed end beam 2 of the turnover cross beam is provided with a clamping groove 12 for clamping the screw rod 10.

[0056] Wherein, the screw rod 10 is provided with a square head 13 at the front end thereof, and a ratchet wrench is used to rotate the screw rod 10, so as to realize the relative movement of the fixed end beam 2 of the turnover cross beam and the moving end beam 3 of the turnover cross beam, and drill a hole in the moving end beam 3 of the turnover cross beam at the corresponding synthetic centroid position, so as to weld a shaft sleeve.

[0057] Wherein, the fixed end beam 2 of the turnover cross beam is provided with an oblong hole, and the adapter shaft 4 passes through the oblong hole of the fixed end beam 2 of the turnover cross beam and the hole (shaft sleeve) of the moving end beam 3 of the turnover cross beam, and is connected with the guide chain hook of the main beam.

[0058] Specifically, a plurality of interface screws 14 are arranged at the interface between the turnover cross beam and the product.

[0059] Specifically, the fixed end beam 2 of the turnover cross beam is provided with fixed end beam blocking plates 17 at both ends thereof.

[0060] In the embodiment, the ratchet wrench is used to rotate the screw rod 10, so that the moving end beam 3 of the turnover cross beam carries the adapter shaft 4 and the lifting point of the main beam, and moves relative to the moving end beam 3 of the turnover cross beam, so as to realize the stepless adjustment of the adapter shaft 4 of the lifting point (the adapter end beam of the main beam directly below the overhead traveling crane hook) close to the synthetic centroid, and the turnover process is more labor-saving.

[0061] After being adjusted to the appropriate position, the locking bolts 5 and nuts on both sides of the lifting point are tightened.

[0062] Since the turnover cross beam of the lifting device is fixedly connected with the product only at the front end thereof, the turnover cross beam belongs to a cantilever beam structure.

[0063] Since the turnover cross beam is connected with the product at the front end of the fixed end beam 2 of the turnover cross beam (one on the left and one on the right), the turnover cross beam belongs to a cantilever structure, the moving end beam 3 of the turnover cross beam carries the lifting point of the main beam and is arranged on the fixed end beam 2 of the turnover cross beam, and the fixed end beam 2 of the turnover cross beam serves as a main bearing welded part and has a reasonable welding structure and sufficient strength.

[0064] In summary, the working process of the lifting device is as follows:

[0065] The turnover lifting device is provided with one main beam 1, the rear end of the main beam 1 is connected with a hand chain block B8, and the hand chain block B8 is connected with the rear lifting plate 6 at the rear end interface of the product.

[0066] The front sides of the left and right ends of the main beam 1 are respectively connected with the two ends of the fixed end beam 2 of the turnover cross beam by using the hand chain blocks A7 and C9.

[0067] The upper end of the middle of the main beam 1 is connected with the hook of the overhead traveling crane.

[0068] The main beam 1 left and right end adapter hand hoist B8 and hand hoist C9, (adjustable height),

[0069] Hand hoist A7 lower end hook through the adapter shaft 4 connection turnover beam;

[0070] The main beam 1 adopts triangular structure;

[0071] The main beam 1 left and right each one, prevent product to the front or to the back overturn;

[0072] The turnover beam is composed of the fixed end beam 2 of the turnover beam and the moving end beam 3 of the turnover beam;

[0073] The fixed end beam 2 of the turnover beam is connected to the product interface at the front end;

[0074] The moving end beam 3 of the turnover beam is installed in the fixed end beam 2 of the turnover beam,

[0075] The upper and lower end faces between the two beams are provided with sliding rails 15 and sliding blocks 16, (one set each on the upper and lower sides);

[0076] The moving end beam 3 of the turnover beam is provided with a screw nut 11 and a lead screw 10 at the front end;

[0077] The fixed end beam 2 of the turnover beam is provided with a clamping groove 12 to clamp the lead screw 10,

[0078] The lead screw 10 is provided with a square head 13 at the front end, and a ratchet wrench is used to rotate the lead screw 10 to realize the relative movement of the fixed end beam 2 of the turnover beam and the moving end beam 3 of the turnover beam, thereby steplessly adjusting the approach of the lifting point to the synthetic centroid;

[0079] A hole is drilled in the moving end beam 3 of the turnover beam at the position corresponding to the synthetic centroid, which can be welded with a shaft sleeve;

[0080] The fixed end beam 2 of the turnover beam is provided with an oblong hole, and the adapter shaft 4 passes through the oblong hole of the fixed end beam 2 of the turnover beam and the hole (shaft sleeve) of the moving end beam 3 of the turnover beam to connect the guide chain hook of the main beam;

[0081] The ratchet wrench rotates the lead screw 10, so that the moving end beam 3 of the turnover beam with the adapter shaft 4 and the lifting point of the main beam moves relative to the moving end beam 3 of the turnover beam, thereby realizing the approach of the adapter shaft 4 of the steplessly adjusted lifting point (the adapter end beam of the main beam directly below the overhead traveling crane hook) to the synthetic centroid, and the turnover process is more labor-saving;

[0082] After adjusting to the appropriate position, tighten the locking bolts 5 and nuts on both sides of the lifting point.

[0083] Since the turnover beam of the present lifting device is only fixedly connected to the product at the front end and belongs to a cantilever beam structure;

[0084] Since the overturning crossbeam is connected to the product by the front end of the fixed end beam 2 of the overturning crossbeam (one on the left and one on the right), belongs to a cantilever structure, the moving end beam 3 of the overturning crossbeam is installed on the fixed end beam 2 of the overturning crossbeam with the main beam lifting point, and the fixed end beam 2 of the overturning crossbeam serves as the main load-bearing welded part and has a reasonable welded structure and sufficient strength.

[0085] The parts not involved in the present application are the same as or can be realized by the prior art. Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A variable-gauge flip-over spreader for a hoist point, comprising a flip-over spreader assembly, characterized in that: The total assembly of the turnover spreader uses a main beam (1), the rear end of which is connected with a hand chain block B (8) and a rear lifting plate (6) connected with the rear end interface of the product; The left and right ends of the main beam (1) are connected with the two ends of the fixed end beam (2) of the turnover cross beam through the hand chain block A (7) and the hand chain block C (9) respectively; The upper end of the middle of the main beam (1) is connected with the hook of the automobile crane; The left and right ends of the main beam (1) are connected with the hand chain block B (8) and the hand chain block C (9); The lower end hook of the hand chain block A (7) is connected with the turnover cross beam through the adapter shaft (4); The turnover cross beam is composed of the fixed end beam (2) of the turnover cross beam and the movable end beam (3) of the turnover cross beam; the front end of the fixed end beam (2) of the turnover cross beam is connected with the product interface; the movable end beam (3) of the turnover cross beam is installed in the fixed end beam (2) of the turnover cross beam; the upper and lower end faces between the fixed end beam (2) of the turnover cross beam and the movable end beam (3) of the turnover cross beam are installed with the slide rail (15) and the slide block (16); the front end of the movable end beam (3) of the turnover cross beam is installed with the nut (11) and the lead screw (10); the fixed end beam (2) of the turnover cross beam is provided with the clamping groove (12) for clamping the lead screw (10).

2. The flip trolley of claim 1, wherein: The main beam (1) is triangular.

3. The flip trolley of claim 2, wherein: There are two main beams (1) on the left and right sides.

4. The flip trolley of claim 1, wherein: The lead screw (10) is provided with the square head (13) at the front end, the lead screw (10) is rotated by using the ratchet wrench, the relative movement between the fixed end beam (2) of the turnover cross beam and the movable end beam (3) of the turnover cross beam is realized, and the hole is drilled in the corresponding movable end beam (3) of the turnover cross beam at the synthetic centroid position.

5. The flip trolley of claim 4, wherein: The fixed end beam (2) of the turnover cross beam is provided with an oblong hole, the adapter shaft (4) passes through the oblong hole of the fixed end beam (2) of the turnover cross beam and the hole of the movable end beam (3) of the turnover cross beam, and is connected with the guide chain hook of the main beam.

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