CN210037236U - Force increasing device for electric hoist test - Google Patents
Force increasing device for electric hoist test Download PDFInfo
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- CN210037236U CN210037236U CN201920923244.5U CN201920923244U CN210037236U CN 210037236 U CN210037236 U CN 210037236U CN 201920923244 U CN201920923244 U CN 201920923244U CN 210037236 U CN210037236 U CN 210037236U
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Abstract
The utility model relates to a force increasing device for an electric hoist test, which comprises a lower lifting hook beam, wherein the middle part of the lower lifting hook beam is provided with a lower lifting hook, the end part of the lower lifting hook beam is provided with a lifting lug, and a plurality of fixed pulleys are arranged on the lower lifting hook beam positioned at the side edge of the lower lifting hook through pin shafts; the lifting hook device also comprises an upper lifting hook cross beam, wherein the middle part of the upper lifting hook cross beam is provided with an upper lifting hook, and a plurality of lifting hook pulleys are arranged on the upper lifting hook cross beam positioned on the side edge of the upper lifting hook; one end of the steel wire rope is fixed with the lifting lug, and the other free end of the steel wire rope sequentially bypasses the hook pulley and the fixed pulley and is connected with a weight lifting hook at the end after being wound out from the last hook pulley; when an electric hoist test is carried out, the upper lifting hook is hooked with and hoisted by an electric hoist lifting hook, the lower lifting hook is hooked with a ground anchor lifting hook in a ground anchor device, and a weight lifting hook is hooked with a weight component; the utility model discloses an increase several times when transmitting weight component weight to electric block, the weight quantity that significantly reduces and match work load promote experimental speed and efficiency.
Description
Technical Field
The utility model belongs to the technical field of hoisting equipment test device technique and specifically relates to an experimental booster unit that uses of electric block.
Background
The electric hoist is used as a hoisting device, is arranged on a crown block and a gantry crane, is widely applied to occasions needing to lift or move heavy objects, such as industrial and mining enterprises, buildings, warehouse wharfs and the like, and is a necessary machine for improving the labor efficiency and the labor conditions. It is usually driven by a self-contained motor, and the lifting capacity is from hundreds of jin to hundreds of tons; because of its heavy hoisting weight, use highly, in order to ensure the security and the requisite characteristic of electric block, must carry out relevant test.
The test of the electric hoist mainly comprises a rated load test, a dynamic load test under 1.1 times of rated load and a static load test under 1.25 times of rated load; the test load is required in the test, weights are most feasible and commonly used in the prior art, weight groups are formed by combining and stringing weights with different weights through a pull rod in the middle, and the weights are hung on an electric hoist lifting hook, so that various tests are carried out on the weights.
In the prior art, because the rated tonnage level of the electric hoist is more, the weight combinations involved in the test are more, and the required weights are more in weight specification and quantity; the large number and the large specification of the weights are very tedious and labor-consuming in storage, management and transportation in and out.
Among the prior art, the weight that test device relates to is in large quantity, the specification is many, and the total weight is big, and the weight piles up highly high, and the weight matches wastes time and energy, and also high to test bench and test factory building requirement, greatly increased test cost.
SUMMERY OF THE UTILITY MODEL
The applicant provides a rational in infrastructure's experimental booster unit of using of electric block to shortcoming among the above-mentioned prior art to the realization increases several times when transmitting weight to electric block, and the weight quantity that significantly reduces and match the work load promote weight matching speed and efficiency, reduce test cost.
The utility model discloses the technical scheme who adopts as follows:
a force boosting device for an electric hoist test comprises a lower lifting hook cross beam, wherein a downward lower lifting hook is installed in the middle of the lower lifting hook cross beam, lifting lugs are welded at the end part of the lower lifting hook cross beam, and a fixed pulley is installed on the lower lifting hook cross beam positioned on the side edge of the lower lifting hook; the lifting hook device is characterized by further comprising an upper lifting hook cross beam, wherein an upward upper lifting hook is arranged in the middle of the upper lifting hook cross beam, and a lifting hook pulley is arranged on the upper lifting hook cross beam positioned on the side edge of the upper lifting hook; the upper lifting hook cross beam is connected with the lower lifting hook cross beam through a steel wire rope, one end of the steel wire rope is fixed with the lifting lug, the other free end of the steel wire rope sequentially bypasses the lifting hook pulley and the fixed pulley, and the end of the steel wire rope is connected with a weight lifting hook after the last lifting hook pulley is wound out.
As a further improvement of the above technical solution:
a fixed pulley and two lifting hook pulleys are in a group and are arranged in parallel.
A plurality of fixed pulleys are installed on the lower lifting hook cross beam at intervals, and a plurality of lifting hook pulleys are installed on the upper lifting hook cross beam at intervals.
The lower lifting hook cross beam is a hollow beam with a square-shaped cross section, and the fixed pulley is arranged on the lower lifting hook cross beam through a first pin shaft; the pin shaft penetrates through the lower hook cross beam, and a fixed pulley is sleeved on a first pin shaft positioned in the lower hook cross beam through a bearing; and the end part of the first pin shaft penetrating through the lower lifting hook cross beam is provided with symmetrical open grooves, baffles are clamped in the open grooves, and the baffles are fixedly connected to the side surface of the lower lifting hook cross beam through a first bolt to prevent the first pin shaft from axially moving.
The lower part of the lifting lug is cylindrical and is welded with the lower lifting hook cross beam, the upper part of the lifting lug is of a circular jar structure, and the side surface of the lifting lug is provided with a through hole in clamping fit with the wedge block; the fixed end of the steel wire rope is cast in the center of the wedge block, and the wedge block is clamped in the through hole in the upper portion of the lifting lug.
A lower lifting hook cross beam positioned at the outer side of the fixed pulley is provided with a groove falling prevention device; a housing bottom plate is further arranged on the lower lifting hook cross beam below the fixed pulley through a second bolt, and the pulley housing is fixed on the lower lifting hook cross beam through the housing bottom plate; the groove-dropping prevention device is a double-headed screw structure matched with a nut and is arranged outside a rope groove of the fixed pulley.
The tail end of the lower lifting hook penetrates through a hook handle bearing which is assembled in a beam hole of the lower lifting hook in an interference fit manner and is axially locked through a lifting hook nut I and a pin shaft II; and the tail end of the upper lifting hook penetrates through a lifting hook bearing which is assembled in the beam hole of the upper lifting hook in an interference manner and is locked in a triaxial direction through a lifting hook nut II and a pin shaft.
The lifting hook pulley is arranged on the upper lifting hook cross beam through a pulley bearing; and a pulley protective cover containing each hook pulley is also arranged on the upper hook beam.
And the lower lifting hook cross beam is also provided with a constraint hole, and after the use is finished, the weight lifting hook is hooked on the constraint hole.
When the electric hoist test is carried out, the upper lifting hook is hooked with and hoisted by the lifting hook of the electric hoist, the lower lifting hook is hooked with the ground anchor lifting hook in the ground anchor device, and the ground anchor device is fixedly arranged in the pit; and the weight hook is hooked with a weight component.
The utility model has the advantages as follows:
the utility model has compact and reasonable structure and convenient operation, and the force transmitted to the upper lifting hook is multiplied relative to the weight of the weight articulated at the position of the weight lifting hook by the force increasing device, namely, the weight component with smaller weight is matched to meet the load requirement in the test, thereby greatly reducing the weight of the required weight component, further reducing the weight specification, the number and the workload of combination matching, improving the working efficiency and reducing the test cost;
the utility model discloses still include following advantage:
the pulley protective cover is used for preventing the steel wire rope from jumping out of the rope groove of the hook pulley in a loose state and preventing foreign matters from entering the rope groove of the hook pulley;
the pulley bearing is a rolling bearing, an inner ring is sleeved on the upper hook cross beam in an interference fit manner, and an outer ring is in an interference fit manner in a central shaft hole of the hook pulley, so that the hook pulley can freely rotate;
the groove-dropping prevention device is of a double-headed screw structure and is matched with a nut to block the outer side of the rope groove of the fixed pulley so as to prevent the steel wire rope from jumping out of the rope groove of the fixed pulley;
the pulley housing is used for preventing the steel wire rope from jumping out of the rope groove of the fixed pulley in a loose state, preventing the steel wire rope from being damaged when the force boosting device is placed on the ground after the force boosting device is used, and preventing foreign matters from entering the rope groove of the fixed pulley.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the present invention in use.
Wherein: 1. a lower hook; 2. a first hook nut; 3. a hook shank bearing; 4. lifting lugs; 5. a wedge block; 6. a second pin shaft; 7. a lower hook cross beam; 8. a wire rope; 9. a pulley shield; 10. a pulley bearing; 11. a hook pulley; 12. an upper hook beam; 13. an upper hook; 14. a second hook nut; 15. a hook bearing; 16. a third pin shaft; 17. a weight hook; 18. a fixed pulley; 19. a first pin shaft; 20. a baffle plate; 21. a first bolt; 22. a groove drop prevention device; 23. a housing floor; 24. a pulley housing; 25. a second bolt; 26. a constraint hole; 30. a ground anchor device; 31. a weight component; 32. a pit; 33. and a ground anchor lifting hook.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the force increasing device for the electric hoist test of the present embodiment includes a lower hook beam 7, a downward lower hook 1 is installed in the middle of the lower hook beam 7, a lifting lug 4 is welded to the end of the lower hook beam 7, and a fixed pulley 18 is installed on the lower hook beam 7 located on the side of the lower hook 1; the lifting hook device further comprises an upper lifting hook cross beam 12, an upward upper lifting hook 13 is arranged in the middle of the upper lifting hook cross beam 12, and a lifting hook pulley 11 is arranged on the upper lifting hook cross beam 12 located on the side edge of the upper lifting hook 13; the upper hook beam 12 is connected with the lower hook beam 7 through a steel wire rope 8, one end of the steel wire rope 8 is fixed with the lifting lug 4, the other free end of the steel wire rope sequentially bypasses a hook pulley 11 and a fixed pulley 18, and a weight hook 17 is connected to the end of the steel wire rope after being wound out from the last hook pulley 11.
One fixed pulley 18 and two hook pulleys 11 are in a group and are arranged in parallel in multiple groups.
A plurality of fixed pulleys 18 are mounted on the lower hook beam 7 at intervals, and a plurality of hook pulleys 11 are mounted on the upper hook beam 12 at intervals.
The lower hook cross beam 7 is a hollow beam with a square-shaped cross section, and a fixed pulley 18 is arranged on the lower hook cross beam 7 through a first pin shaft 19; a first pin shaft 19 penetrates through the lower hook cross beam 7, and a fixed pulley 18 is sleeved on the first pin shaft 19 positioned in the lower hook cross beam 7 through a bearing; the end part of the first pin shaft 19 penetrating through the lower hook cross beam 7 is provided with symmetrical open grooves, baffle plates 20 are clamped in the open grooves, and the baffle plates 20 are fixedly connected to the side surface of the lower hook cross beam 7 through first bolts 21 so as to prevent the first pin shaft 19 from axially moving.
The lower part of the lifting lug 4 is cylindrical and is welded with a lower lifting hook cross beam 7, the upper part of the lifting lug 4 is of a circular jar structure, and the side surface of the lifting lug 4 is provided with a through hole which is in clamping fit with the wedge block 5; the fixed end of the steel wire rope 8 is cast in the center of the wedge block 5, and the wedge block 5 is clamped in the through hole in the upper part of the lifting lug 4.
The lower hook beam 7 positioned outside the fixed pulley 18 is provided with a groove falling prevention device 22; a housing bottom plate 23 is further mounted on the lower hook cross beam 7 below the fixed pulley 18 through a second bolt 25, and a pulley housing 24 is fixed on the lower hook cross beam 7 through the housing bottom plate 23; the pulley cover 24 prevents the wire rope 8 from jumping out of the rope groove of the fixed pulley 18 in a loose state, prevents the wire rope 8 from being damaged when the booster is placed on the ground after use, and prevents foreign matters from entering the rope groove of the fixed pulley 18.
The groove escape preventing device 22 is a stud structure used in cooperation with a nut, and is attached to the outside of the rope groove of the fixed pulley 18, and the groove escape preventing device 22 is stopped outside of the rope groove of the fixed pulley 18 in cooperation with the nut, and prevents the wire rope 8 from escaping from the rope groove of the fixed pulley 18.
The tail end of the lower lifting hook 1 penetrates through a hook handle bearing 3 which is assembled in a hole of a lower lifting hook cross beam 7 in an interference fit mode, and is axially locked through a lifting hook nut I2 and a pin shaft II 6; the tail end of the upper hook 13 passes through a hook bearing 15 which is in interference fit with the hole of the upper hook beam 12 and is axially locked by a second hook nut 14 and a third pin 16.
The hook pulley 11 is mounted on an upper hook beam 12 through a pulley bearing 10, the pulley bearing 10 is a rolling bearing, an inner ring is sleeved on the upper hook beam 12 in an interference fit manner, and an outer ring is in the central shaft hole of the hook pulley 11 in the interference fit manner, so that the hook pulley 11 can rotate freely; a pulley protective cover 9 containing each hook pulley 11 is also arranged on the upper hook beam 12; the sheave guard 9 is used to prevent the wire rope 8 from jumping out of the rope groove of the hook pulley 11 in a loose state and to prevent foreign matter from entering the rope groove of the hook pulley 11.
The lower hook beam 7 is also provided with a constraint hole 26, after the use is finished, the weight hook 17 is hooked on the constraint hole 26, and the whole force boosting device is hung in a proper place through the upper hook 13 to be stored for the next test.
As shown in fig. 2, when the electric hoist test is performed, the upper hook 13 is hooked with and hoisted by an electric hoist hook, the lower hook 1 is hooked with an anchor hook 33 in an anchor block device 30, and the anchor block device 30 is fixedly installed in a pit 32; the weight hook 17 is hooked with a weight assembly 31.
In the utility model, the multiplying power of the force increasing device is 2/the number of the moving wire rope heads;
in this embodiment, as shown in fig. 1 and 2, a fixed block 18 is mounted on the lower hook beam 7; two ends of the upper hook beam 12 are respectively provided with a hook pulley 11; one end of a steel wire rope 8 is fixed with the lifting lug 4, the other free end of the steel wire rope sequentially bypasses the lifting hook pulley 11, the fixed pulley 18 and the other lifting hook pulley 11, and the end of the steel wire rope is connected with a weight lifting hook 17; that is, two movable pulleys are included, one end of the steel wire rope 8 is a free end, namely the number of the movable heads is 1, and the multiplying power of the force boosting device is 2 × 2/1-4 times; in the test, the weight of the weight assembly 31 hooked by the weight hook 17 was G, and the load ultimately applied to the electric block hook by the upper hook 13 was 4G.
The utility model discloses simple structure, the load of output increases several times on weight component weight basis, has reduced the matching time of weight quantity and weight combination greatly, and the practicality is strong.
The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.
Claims (10)
1. The utility model provides an experimental booster unit that uses of electric block which characterized in that: the lifting device comprises a lower lifting hook cross beam (7), wherein a downward lower lifting hook (1) is installed in the middle of the lower lifting hook cross beam, a lifting lug (4) is welded at the end part of the lower lifting hook cross beam (7), and a fixed pulley (18) is installed on the lower lifting hook cross beam (7) positioned on the side edge of the lower lifting hook (1); the lifting hook is characterized by further comprising an upper lifting hook cross beam (12), an upward upper lifting hook (13) is installed in the middle of the upper lifting hook cross beam (12), and a lifting hook pulley (11) is installed on the upper lifting hook cross beam (12) located on the side edge of the upper lifting hook (13); go up between lifting hook crossbeam (12) and lower lifting hook crossbeam (7) and be connected through wire rope (8), wire rope (8) one end is fixed with lug (4), and lifting hook pulley (11) and fixed pulley (18) are walked around in proper order to another free end to be connected with weight lifting hook (17) at the end after around out from last lifting hook pulley (11).
2. The force-increasing device for the electric block test as set forth in claim 1, wherein: one fixed pulley (18) and two hook pulleys (11) form a group, and a plurality of groups are arranged in parallel.
3. The force-increasing device for the electric block test as set forth in claim 1, wherein: a plurality of fixed pulleys (18) are installed on the lower hook cross beam (7) at intervals, and a plurality of hook pulleys (11) are installed on the upper hook cross beam (12) at intervals.
4. The force-increasing device for the electric block test as set forth in claim 1, wherein: the lower lifting hook cross beam (7) is a hollow beam with a square-shaped cross section, and a fixed pulley (18) is arranged on the lower lifting hook cross beam (7) through a pin shaft I (19); the first pin shaft (19) penetrates through the lower hook cross beam (7), and a fixed pulley (18) is sleeved on the first pin shaft (19) positioned in the lower hook cross beam (7) through a bearing; the end part of the first pin shaft (19) penetrating through the lower lifting hook cross beam (7) is provided with symmetrical open grooves, baffle plates (20) are clamped in the open grooves, and the baffle plates (20) are fixedly connected to the side face of the lower lifting hook cross beam (7) through bolts (21) to prevent the first pin shaft (19) from axially moving.
5. The force-increasing device for the electric block test as set forth in claim 1, wherein: the lower part of the lifting lug (4) is cylindrical and is welded with the lower lifting hook cross beam (7), the upper part of the lifting lug (4) is of a circular jar structure, and the side surface of the lifting lug is provided with a through hole in clamping fit with the wedge block (5); the fixed end of the steel wire rope (8) is cast in the center of the wedge block (5), and the wedge block (5) is clamped in the through hole in the upper part of the lifting lug (4).
6. The force-increasing device for the electric block test as set forth in claim 1, wherein: a groove falling-preventing device (22) is arranged on the lower hook cross beam (7) positioned on the outer side of the fixed pulley (18); a housing bottom plate (23) is further arranged on the lower lifting hook cross beam (7) below the fixed pulley (18) through a second bolt (25), and a pulley housing (24) is fixed on the lower lifting hook cross beam (7) through the housing bottom plate (23); the groove-shedding preventing device (22) is a double-headed screw structure matched with a nut and is arranged outside a rope groove of the fixed pulley (18).
7. The force-increasing device for the electric block test as set forth in claim 1, wherein: the tail end of the lower lifting hook (1) penetrates through a hook handle bearing (3) which is assembled in a hole of a lower lifting hook cross beam (7) in an interference fit mode, and is axially locked through a lifting hook nut I (2) and a pin shaft II (6); and the tail end of the upper hook (13) penetrates through a hook bearing (15) which is assembled in a hole of the upper hook beam (12) in an interference manner and is axially locked through a second hook nut (14) and a third pin shaft (16).
8. The force-increasing device for the electric block test as set forth in claim 1, wherein: the hook pulley (11) is arranged on the upper hook beam (12) through a pulley bearing (10); and a pulley protective cover (9) containing each hook pulley (11) is also arranged on the upper hook beam (12).
9. The force-increasing device for the electric block test as set forth in claim 1, wherein: and the lower hook beam (7) is also provided with a constraint hole (26), and after the use is finished, the weight hook (17) is hooked on the constraint hole (26).
10. The force-increasing device for the electric block test as set forth in claim 1, wherein: when an electric hoist test is carried out, the upper lifting hook (13) is hooked with and hoisted by an electric hoist lifting hook, the lower lifting hook (1) is hooked with a ground anchor lifting hook (33) in a ground anchor device (30), and the ground anchor device (30) is fixedly arranged in a pit (32); the weight hook (17) is hooked with a weight component (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920923244.5U CN210037236U (en) | 2019-06-19 | 2019-06-19 | Force increasing device for electric hoist test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920923244.5U CN210037236U (en) | 2019-06-19 | 2019-06-19 | Force increasing device for electric hoist test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210037236U true CN210037236U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920923244.5U Active CN210037236U (en) | 2019-06-19 | 2019-06-19 | Force increasing device for electric hoist test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210037236U (en) |
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2019
- 2019-06-19 CN CN201920923244.5U patent/CN210037236U/en active Active
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