Adjustable lifting appliance suitable for lifting steel beam

Abstract

The utility model provides an adjustable lifting appliance suitable for lifting a steel beam, which is characterized in that an anchorage device is fixed at the upper part of a connecting piece, the anchorage device fixes the lower end of a steel strand with the connecting piece, and the lower part of the connecting piece is a hinged plate; the whole adjustable anchor head is in a concave shape, the top of the adjustable anchor head is hinged to the hinge plate, the middle of the adjustable anchor head is a hollow channel, two hanging components are arranged at the bottom of the channel, and sliding assemblies are arranged on the top faces of the two hanging components. The carrying pole beam penetrates through a middle channel of the adjustable anchor head and is borne by the two suspension components. The lifting appliance lifting lug is fixedly connected to the lower part of the carrying pole beam and downwards penetrates out of a gap between the two suspension components; the position adjusting oil cylinder is located above the carrying pole beam, the two ends of the position adjusting oil cylinder are connected with the adjustable anchor head and the carrying pole beam respectively, and the position adjusting oil cylinder drives the carrying pole beam to slide relative to the adjustable anchor head. The lifting appliance can accurately adjust the position of the lifting lug within a certain range, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel beam hoisting auxiliary tools, in particular to an adjustable hoisting device suitable for hoisting steel beams. Background Art

[0002] Steel structures are ideal for super-high-rise and super-large spans due to their unique advantages such as light weight, high strength and fast construction. Nowadays, steel box girders are also frequently used in the construction of large-span bridges as a construction technology. However, there are still certain problems. At present, in most cross-river and sea bridges, steel box girders are mainly transported by ships and hoisted by cranes. The centering of hoists and lifting ears is mainly achieved by the movement of ships. However, this method is highly dependent on the driver's skills, the parking position of the ship is difficult to control, the ship needs to be moved frequently, the operation time is long, the precision control is difficult, and the safety risk is high. Utility Model Content

[0003] In view of the current problems that before lifting the steel beam, the lifting device and the lifting ears of the steel box beam are difficult to align, the operation time is long, and the accuracy is difficult to control, the present application provides an adjustable lifting device suitable for lifting steel beams, which can accurately adjust the position of the lifting ears within a certain range, thereby improving construction efficiency.

[0004] The technical solution adopted to achieve the above-mentioned purpose of the utility model is:

[0005] An adjustable sling suitable for lifting a steel beam, comprising at least a steel strand and a sling lug, the adjustable sling comprising:

[0006] A connecting piece, an upper portion of which is fixed with an anchor, the anchor fixes the lower end of the steel strand to the connecting piece, and the lower portion of the connecting piece is a hinged plate;

[0007] The adjustable anchor head is concave in shape as a whole, the top of the adjustable anchor head is hinged to the hinge plate, the middle of the adjustable anchor head is a hollow channel, two hanging members are arranged at the bottom of the channel, sliding components are arranged on the top surfaces of the two hanging members, and a gap is arranged between the two hanging members;

[0008] The shoulder pole beam passes through the middle channel of the adjustable anchor head and is carried by two suspension members, and the shoulder pole beam can slide along the channel; the lifting lug of the sling is fixedly connected to the lower part of the shoulder pole beam and passes downward from the gap between the two suspension members;

[0009] The position adjusting oil cylinder is located above the shoulder pole beam, and the two ends of the position adjusting oil cylinder are respectively connected with the adjustable anchor head and the shoulder pole beam, and the position adjusting oil cylinder drives the shoulder pole beam to slide relative to the adjustable anchor head.

[0010] Furthermore, a screw rod is provided, which passes through both ends of the shoulder pole beam and the hanging member, and the two ends of the screw rod are connected and fixed to the shoulder pole beam by nuts. Two adjusting nuts are provided in the middle of the screw rod, and the two adjusting nuts are respectively located on both sides of the hanging member and adjust the relative position between the screw rod and the adjustable anchor head.

[0011] Furthermore, two screw rods are provided, and the two screw rods pass through two suspension components respectively.

[0012] Furthermore, the top of the adjustable anchor head is a hinge plate, and circular holes are provided in the middle of the hinge plate in the connecting piece and the hinge plate in the adjustable anchor head, and the first pin passes through the circular hole to hinge the two.

[0013] Furthermore, the sliding component is a polytetrafluoroethylene sliding plate.

[0014] Furthermore, a first oil cylinder base is welded to the side surface of the adjustable anchor head, and the adjustment oil cylinder is connected to the first oil cylinder base via a second pin shaft.

[0015] Furthermore, the shoulder pole beam is welded from steel plates, a second oil cylinder base is welded above the shoulder pole beam, the adjustment cylinder is connected to the second oil cylinder base through a third pin shaft, and the shoulder pole beam is welded and fixed to the lifting lug of the sling below.

[0016] Furthermore, a circular hole is opened in the lifting lug of the sling, and the fourth pin passes through the circular hole to connect the lifting lug of the sling with the lifting lug of the steel box girder.

[0017] Compared with the prior art, the technical solution provided by the utility model has the following advantages:

[0018] (1) The utility model provides an adjustable sling suitable for lifting steel beams. The utility model utilizes a combination of an adjustable anchor head and a shoulder pole beam. By adjusting the oil pressure of the positioning cylinder, the shoulder pole beam is driven to slide inside the adjustable anchor head. The position of the lifting lug can be accurately adjusted within a certain range, thereby improving construction efficiency. When the steel beam is suspended in the air, the position of the lifting lug can be adjusted to keep the center of gravity of the steel strand, the sling, and the steel beam consistent, thereby avoiding eccentricity and overturning of the steel beam during lifting and reducing construction risks.

[0019] (2) The utility model provides an adjustable sling suitable for lifting steel beams, and pin holes with different spacings are arranged on the lifting ears, which can not only further increase the adjustable range of the sling, but also meet the requirements of the lifting ear size of different steel beams, reduce the number of times the sling is replaced during the construction process, speed up the construction progress, and avoid safety risks during the replacement of the sling.

[0020] (3) The utility model provides an adjustable lifting device suitable for lifting steel beams, the upper part of which is arranged as a hinged structure, so as to avoid stress concentration caused by the deviation of the steel beam during the lifting process of the steel beam, thereby greatly improving the safety during the lifting process of the steel beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural front view of the device;

[0022] Figure 2 It is a structural side view of the device;

[0023] Figure 3 This is a structural side view of the device after adjustment;

[0024] Figure 4 It is a front view of the connecting part in the device;

[0025] Figure 5 It is a side view of the connecting member in the device;

[0026] Figure 6 It is a front view of the adjustable anchor head in the device;

[0027] Figure 7 It is a side view of the adjustable anchor head in the device;

[0028] Figure 8 This is a front view of the shoulder pole beam and the lifting lug of the sling in the device;

[0029] Fig. 9 Side view of the shoulder pole beam and the lifting lug of the sling in this device;

[0030] Fig.10 It is a side view of the adjustment cylinder and the cylinder base in this device.

[0031] In the figure: 1. Steel strand, 2. Connecting piece, 3. Adjustable anchor head, 4. Shoulder beam, 5. Adjusting cylinder, 6. Lifting lug of sling, 7a. First pin, 7b. Second pin, 7c. Third pin, 7d. Fourth pin, 8. Hinge plate, 9a. First cylinder base, 9b. Second cylinder base, 10. Screw, 11. Fixing nut, 12. Adjusting nut, 13. Steel pad, 14. Lifting lug of steel box beam, 15-PTFE slide plate. DETAILED DESCRIPTION

[0032] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] The utility model provides an adjustable lifting device suitable for lifting steel beams, and its overall structure is as follows Figure 1 , Figure 2 and Figure 3 The structure of the connector 2 is shown in FIG. Figure 4 and Figure 5As shown, an anchor is fixed on the upper part of the connector, and the anchor fixes the lower end of the steel strand 1 to the connector, and the lower part of the connector is a hinged plate. The connector 2 is welded from steel plates, and the upper part is square, hollow and has a circular hole, where the anchor and the steel strand 1 are placed. The lower part of the connector 2 is a hinged plate 8, and a circular hole is provided in the middle of the hinged plate 8 for the first pin 7a to pass through.

[0034] The structure of the adjustable anchor head 3 is as follows: Figure 6 and Figure 7 As shown, the whole is concave, and the top of the adjustable anchor head is hinged to the hinge plate. A hinge plate 8 is arranged on the top of the adjustable anchor head, and circular holes are provided in the middle of the hinge plate 8 in the connecting member and the hinge plate 8 in the adjustable anchor head, and the first pin shaft 7a passes through the circular hole to hinge the two. The middle part of the adjustable anchor head is a hollow channel, and two suspension members are arranged at the bottom of the channel. A sliding assembly is arranged on the top surface of the two suspension members, and the sliding assembly is a polytetrafluoroethylene slide plate 15; a gap is arranged between the two suspension members.

[0035] The structure of the shoulder beam 4 is as follows Figure 8 and Fig. 9 As shown, the shoulder pole beam is welded from steel plates, passes through the middle channel of the adjustable anchor head and is supported by two suspension components, and the shoulder pole beam can slide along the channel; the hanger ear 6 is fixedly connected to the bottom of the shoulder pole beam and passes downward from the gap between the two suspension components. A circular hole is opened in the hanger ear, and the fourth pin passes through the circular hole to connect the hanger ear with the steel box beam ear. The hanger ear 6 opens a circular hole according to the ear hole position of the steel box beam ear 14, and can be additionally provided with a hole according to the size of the hanger ear 6, for the fourth pin 7d to pass through and connect with the steel box beam ear 14.

[0036] The shoulder pole beam 4 is provided with a screw rod 10, which passes through the two ends of the shoulder pole beam and the hanging member. The two ends of the screw rod are connected and fixed to the shoulder pole beam by nuts. Two adjusting nuts 12 are provided in the middle of the screw rod. The two adjusting nuts are respectively located on both sides of the hanging member and adjust the relative position between the screw rod and the adjustable anchor head. There are two screw rods 10, which pass through the two hanging members respectively. Two circular holes are symmetrically provided on the front of the shoulder pole beam 4 and the adjustable anchor head 3 for the screw rod 10 to pass through. The screw rod 10 is firmly fixed by a fixing nut 11 and a steel pad 13 at the opening of the shoulder pole beam 4. The screw rod 10 is firmly fixed by an adjusting nut 12 and a steel pad 13 at the opening of the adjustable anchor head 3.

[0037] The positioning cylinder 5 is located above the shoulder pole beam, and the two ends of the positioning cylinder are connected to the adjustable anchor head and the shoulder pole beam respectively. The positioning cylinder drives the shoulder pole beam to slide relative to the adjustable anchor head. A first cylinder base 9a is welded on the side of the adjustable anchor head, and the positioning cylinder is connected to the first cylinder base through the second pin shaft 7b. A second cylinder base 9b is welded above the shoulder pole beam, and the positioning cylinder is connected to the second cylinder base through the third pin shaft 7c. The two ends of the positioning cylinder 5 are connected to the first cylinder base 9a and the second cylinder base 9b by the second pin shaft 7b and the third pin shaft 7c respectively, connecting the positioning cylinder 5, the adjustable anchor head 3, and the shoulder pole beam 4 into a whole.

[0038] In this embodiment, the above welding is full welding, and the pin shafts are all provided with cotter pins.

[0039] During installation, first install the anchor and the steel strand 1 in the connector 2. Then connect the two hinged plates 8 together using the first pin 7a. The shoulder beam 4 passes through the notch of the adjustable anchor head 3 and is placed on the PTFE slide plate 15. The adjustment cylinder is connected to the first cylinder base 9a and the second cylinder base 9b through the second pin 7b and the third pin 7c, respectively, so that the adjustable anchor head 3, the shoulder beam 4, and the adjustment cylinder 5 are connected as a whole. Pass the screw 10 through the holes on the shoulder beam 4 and the adjustable anchor head 3, and pass through the adjustment nut 12 and the steel pad 13 at the same time, and tighten the adjustment nut 12 and the steel pad 13 close to the adjustable anchor head 3. Use the fixing nut 11 and the steel pad 13 on the outside of the shoulder beam 4 to firmly fix the screw 10.

[0040] The working process of an adjustable hanger suitable for hoisting steel beams provided by the utility model is as follows:

[0041] (1) After all components of the sling are installed, the position of the adjustable anchor head 3 is fixed firmly by the adjustment nut 12 and the steel pad 13. This is the installation working condition.

[0042] (2) When the position of the lifting lug 6 of the sling needs to be adjusted, first loosen the adjustment nut 12, then adjust the oil pressure through the adjustment cylinder 5 to drive the shoulder beam 4 to slide on the PTFE slide plate 15 of the adjustable anchor head 3, and the lifting lug 6 of the sling moves synchronously with the shoulder beam 4. When the lifting lug 6 of the sling moves to the appropriate position, rotate and tighten the adjustment nut 12 to fix the relative position of the shoulder beam 4 and the adjustable anchor head 3. Select a suitable ear hole on the lifting lug 6 of the sling, lower the entire sling so that it overlaps with the lifting lug 14 of the steel box beam, and install the fourth pin 7d. The sling is connected to the steel box beam, and the sling enters the working state.

[0043] The utility model can be improved or changed according to the above description for those skilled in the art, and all these improvements and changes should fall within the protection scope of the claims attached to the utility model.

Claims

1. An adjustable sling suitable for lifting steel beams, comprising at least a steel strand and a sling lug, characterized in that: The adjustable sling comprises: A connecting piece, an upper portion of which is fixed with an anchor, the anchor fixes the lower end of the steel strand to the connecting piece, and the lower portion of the connecting piece is a hinged plate; The adjustable anchor head is concave in shape as a whole, the top of the adjustable anchor head is hinged to the hinge plate, the middle of the adjustable anchor head is a hollow channel, two hanging members are arranged at the bottom of the channel, sliding components are arranged on the top surfaces of the two hanging members, and a gap is arranged between the two hanging members; The shoulder pole beam passes through the middle channel of the adjustable anchor head and is carried by two suspension members, and the shoulder pole beam can slide along the channel; the lifting lug of the sling is fixedly connected to the lower part of the shoulder pole beam and passes downward from the gap between the two suspension members; The position adjusting oil cylinder is located above the shoulder pole beam, and the two ends of the position adjusting oil cylinder are respectively connected with the adjustable anchor head and the shoulder pole beam, and the position adjusting oil cylinder drives the shoulder pole beam to slide relative to the adjustable anchor head.

2. The adjustable lifting device for lifting steel beams according to claim 1, characterized in that: A screw rod is also provided, which passes through the two ends of the shoulder pole beam and the hanging component. The two ends of the screw rod are connected and fixed to the shoulder pole beam through nuts. Two adjusting nuts are provided in the middle of the screw rod. The two adjusting nuts are respectively located on both sides of the hanging component and adjust the relative position between the screw rod and the adjustable anchor head.

3. The adjustable lifting device for lifting steel beams according to claim 2 is characterized in that: Two screw rods are provided, and the two screw rods pass through the two suspension components respectively.

4. The adjustable lifting device for lifting steel beams according to claim 1, characterized in that: The top of the adjustable anchor head is a hinge plate, and circular holes are provided in the middle of the hinge plate in the connecting piece and the hinge plate in the adjustable anchor head, and the first pin shaft passes through the circular hole to hinge the two.

5. The adjustable lifting device for lifting steel beams according to claim 1, characterized in that: The sliding component is a polytetrafluoroethylene sliding plate.

6. The adjustable lifting device for lifting steel beams according to claim 1, characterized in that: A first oil cylinder base is welded to the side surface of the adjustable anchor head, and the position-adjusting oil cylinder is connected to the first oil cylinder base through a second pin shaft.

7. The adjustable lifting device for lifting steel beams according to claim 1, characterized in that: The shoulder pole beam is welded by steel plates, a second oil cylinder base is welded on the top of the shoulder pole beam, the adjustment cylinder is connected to the second oil cylinder base through a third pin shaft, and the bottom of the shoulder pole beam is welded and fixed to the lifting lug of the sling.

8. The adjustable lifting device for lifting steel beams according to claim 1, characterized in that: A circular hole is opened in the lifting eye of the sling, and the fourth pin shaft passes through the circular hole to connect the lifting eye of the sling with the lifting eye of the steel box beam.

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