CN108680377B - Installation-free electric hoist energy efficiency test bench - Google Patents

Abstract

The electric hoist energy efficiency test bed free of installation comprises support legs which are arranged in parallel at intervals, wherein support plates are arranged on the inner sides of the two support legs, a main beam is arranged on each support plate, and an upper pulley is arranged at the middle position of the upper part of each main beam; the electric hoist is arranged on the traveling rack through a wedge-shaped cushion block; the lower pulley is installed to the below that is located the girder, and the side pulley is installed to the below of electric block, and the side pulley is located one side of lower pulley, and electric block draws forth the lifting hook, still includes the weight subassembly of installing in the pit, and wire rope passes the hanging hole of weight subassembly and loops through the hanging hole, walk around upper pulley, lower pulley, side pulley, finally is connected to on the lifting hook. Through ingenious design electric block's mounted position, simplified the structure, make its pit area little, installation and dismantlement and convenient, need not professional installation team, improved operational reliability greatly.

Description

Installation-free electric hoist energy efficiency test bench

Technical field

The invention relates to the technical field of testing devices, in particular to an installation-free electric hoist energy efficiency test bench.

Background technique

At present, electric hoist test benches are basically "four-beam four-leg bridge test benches", that is, the test bench consists of two main beams, two end beams, and four legs. The two end beams are connected by welding or bolts. On the support legs, two main beams are placed on the two end beams and fixed with bolts. The upper sides of the two main beams are arranged with trolley tracks, and the lower sides are welded with I-beams. The four beams and tracks are all raised in the air through the support legs. . Before the electric hoist test, the trolley-type electric hoist needs to be hoisted to the main beam by the crane in the test workshop and installed on the tracks on the upper sides of the two main beams; the suspension electric hoist needs to be suspended by the crane in the test workshop Lift the electric hoist to the bottom of the main beam, and install the electric hoist's operating trolley on the I-beam on the lower side of the main beam.

It can be seen from the structure of the existing traditional electric hoist test bench and the installation method of the electric hoist that the traditional electric hoist test bench and test technology have the following shortcomings:

(1) The test bench mechanism is complex

The test bench consists of two main beams, two end beams, four outriggers, an upper track, and a lower track. The main beam is a welded pentagonal box beam. The top of the box beam is welded or bolted to the trolley track, and the bottom of the main beam is The welded I-beam is used as the track for the suspended electric hoist to run the trolley. The two ends of the main beam change the cross-section along the Z-axis; the end beam is bolted or welded to the support leg, and the end beam is also a box beam; the main beam is bolted to the end beam. ; The legs are cylindrical or welded rectangular box beam legs.

(2) Pit and pre-embedding are required

In order to support the load-bearing and stability of the outriggers, embedded parts need to be made under the outriggers.

In order to meet the lifting height of the electric hoist, the height of the hoist test bench needs to be 9-11 meters. In order to meet the height of the test workshop and the lifting height of the lifting crane, as well as for the installation and test personnel, the lower the test bench, the better. This way A deep pit of several meters needs to be dug under the test bench to place the weights.

(3) It is inconvenient to install the electric hoist

The installation of the electric hoist needs to be hoisted to a high altitude by a crane. It should not be installed accurately on the trolley track on the upper side of the main beam or suspended on the I-beam on the lower side of the main beam. It requires the cooperation of many people and involves processes such as bundling, lifting, installation, and debugging. It also works at high altitudes, making installation extremely inconvenient.

(4) A qualified installation team is required. Testers cannot install by themselves.

The electric hoist is a type of crane and is a special equipment. The installation unit of the electric hoist needs a "Special Equipment Installation, Modification and Maintenance License", the installer needs an installation qualification license, and the lifting of the hoist requires a rigging qualification certificate and a crane operation qualification certificate.

Sometimes the installation needs to be outsourced to a professional installation company, so the installation time has to be coordinated with the installation company, which greatly reduces the installation efficiency.

(5) Low test efficiency

The early installation and later disassembly of the test took a long time. More than 90% of the time was spent on the installation and disassembly of the electric hoist, and the test efficiency was low. If you also include waiting for the installation company to send personnel to the site for installation and disassembly, the test efficiency cannot be guaranteed.

(6) Testing costs are high

The cost of the test bench is high, the test installation cost is high, and the test time cost is high.

(7) The test bench has poor versatility

The trolley track on the upper side of the main beam of the test bench is welded or the welded pressure plate is fixed on the main beam, and the specifications cannot be changed; the I-beam on the lower side of the main beam is welded on the lower side of the main beam, and the specifications cannot be changed; it is suspended from the lower wing of the box beam Testing of new electric hoists such as edge plates; the trolley gauge is also different depending on the tonnage and lifting height of the electric hoist, and the track gauge of the traditional electric hoist cannot be changed. Some main beams can move along the end beams to change the track gauge in a small range. But it is also extremely complicated and extremely inefficient.

(8) High test risk

Both installers and testers need to work at high altitudes, climbing up and down, and there is a risk of falling from high altitudes.

Contents of the invention

In view of the shortcomings in the above-mentioned existing production technology, the applicant provides a reasonably structured installation-free electric hoist energy efficiency test bench, thereby simplifying the structure, making the pit area small, and easy to install and disassemble, without the need for professional installation. team.

The technical solutions adopted by the present invention are as follows:

An installation-free electric hoist energy efficiency test bench, including legs arranged in parallel at intervals. Support plates are installed on the inner sides of the two legs. A main beam is installed on the support plate, and a pulley is installed at the upper middle position of the main beam. ; It also includes a trolley track arranged on the ground on the side of the hoist platform. A running platform is installed on the trolley track, and the electric hoist is installed on the running platform through wedge-shaped pads; a sliding device is installed below the main beam. A side pulley is installed below the electric hoist, and the side pulley is located next to the lower pulley. A hook is drawn out from the electric hoist. It also includes a weight assembly installed in the pit, and the steel wire rope passes through the weight assembly. The lifting hole is passed through the lifting hole in turn, bypassing the upper pulley, lower pulley, side pulley, and finally connected to the hook.

As a further improvement of the above technical solution:

The installation structure of the upper pulley is: including a flange top plate, a flange bottom plate is installed on the upper part of the flange top plate through fixing bolts and locking nuts, and a pulley support is installed in the middle of the flange bottom plate. The pulley support An upper pulley is installed on the upper part through a pulley shaft, and an end cover is installed on the end of the upper pulley.

The structures of the upper pulley, lower pulley and side pulley are the same.

A suspension rod is installed in the middle of the weight assembly, and a suspension hole is provided in the upper part of the suspension rod.

The running platform is provided with two groups at parallel intervals. The structure of each group is as follows: including a wheel set panel welded to the lower part of the running platform. A wheel axle is provided below the wheel set panel. Wheels are installed on the wheel axle. A wheel rim is provided, side plates are respectively installed on the wheel axles at both ends of the wheel, and the ends of the wheel axles are locked by large nuts.

The lower end of the support plate is fixed on the ground embedded part with high-strength bolts through the flange, the upper end is welded with a semicircular fan-shaped support plate along the circumferential direction of the cylinder, and the reinforcing ribs are welded below the support plate along the axial direction of the cylinder.

The main beam is a rectangular welded box beam.

The beneficial effects of the present invention are as follows:

The invention has a compact, reasonable structure and is easy to operate. By ingeniously designing the installation position of the electric hoist, the structure is simplified, making the pit area small, easy to install and disassemble, without the need for a professional installation team, and greatly improving work reliability. .

At the same time, it also has the following advantages:

(1) Simple structure

It adopts a single-beam and double-column structure. The main beam adopts a rectangular welded box beam with equal cross-section. There are no welded rails above and below. There is no need for a pentagonal cross-section, and there is no need for the end to change the cross-section along the Z-axis direction, which greatly reduces the load of the test bench. Manufacturing and assembly.

(2) The pit area is small

The pit area of the traditional electric hoist test bench is the projected area of the rectangle formed by the main beam and the end beam. The pit of the test bench of the present invention only needs to provide space for the weights, lower pulleys and side pulleys.

(3) Installation and disassembly are extremely convenient

Just place the electric hoist on the running platform, no installation is required. For suspended electric hoists without a small frame, in order to prevent rolling, you only need to place a wedge-shaped pad on the left and right sides of both ends of the electric hoist. That’s it. After the experiment, the electric hoist can be lifted directly away.

(4) No professional installation team is required

The electric hoist test does not require installation and disassembly, and does not require professional and qualified installation companies and installers.

(5) High test efficiency

There is no need for installation or disassembly, no need for test personnel to climb up and down, no need to wait and coordinate the installation team, so the test preparation time is saved, the test efficiency is greatly improved, and the test time is shortened by more than 90%.

(6) Low test cost

The cost of the test bench is low, the amount of pit work is small, no installation and disassembly is required, the workload of test personnel is small, and the test efficiency is high. Overall, the test cost is significantly reduced.

(7) The test bench is versatile and good

The test bench can be applied to all types of electric hoists, and there are no restrictions on track gauge, track model, electric hoist length, etc.

(8) Safe and reliable

The electric hoist is placed on a short operating platform, and the operating platform track is on the ground. All operations of the test personnel are performed on the ground, and there is no installation and disassembly of the electric hoist. So there are fewer risks during the trial.

(9) Particularly suitable for energy efficiency testing and factory testing of electric hoists

The energy efficiency test and factory test of the electric hoist are mainly tests of the lifting mechanism and do not require the operation of the trolley. Therefore, the test bench of the present invention is particularly suitable.

Description of the drawings

Figure 1 is a front view of the present invention.

Figure 2 is a side view of Figure 1

FIG. 3 is a top view of FIG. 1 .

Figure 4 is a schematic diagram of the installation of the upper pulley of the present invention.

Figure 5 is a schematic diagram of the installation of the weight assembly of the present invention.

Figure 6 is a schematic diagram of the installation of the wheel assembly of the present invention.

Among them: 1. Support legs; 2. Main beam; 3. Upper pulley; 4. Support plate; 5. Reinforcing ribs; 6. Trolley track; 7. Running platform; 8. Wedge block; 9. Weight assembly ; 10. Wire rope; 11. Lower pulley; 12. Side pulley; 13. Pit; 14. Electric hoist; 15. Hook; 16. Flange top plate; 17. Flange bottom plate; 18. Fixing bolts; 19. Lock Tightening nut; 20. Pulley support; 21. Pulley shaft; 22. End cover; 23. Suspension rod; 24. Suspension hole; 25. Wheel axle; 26. Large nut; 27. Side plate; 28. Rim; 29. Wheels; 30. Wheel set panel.

Detailed ways

The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in Figures 1, 2 and 3, the installation-free electric hoist energy efficiency test bench of this embodiment includes legs 1 arranged in parallel at intervals. Support plates 4 are installed on the inner sides of the two legs 1. The support plates 4 A main beam 2 is installed on the main beam 2, and an upper pulley 3 is installed at the upper middle position of the main beam 2; it also includes a trolley track 6 arranged on the ground on the side of the hoist platform, and a running platform 7 is installed on the trolley track 6. The running platform 7 The electric hoist 14 is installed on the top through the wedge-shaped spacer 8; a lower pulley 11 is installed below the main beam 2, and a side pulley 12 is installed below the electric hoist 14. The side pulley 12 is located next to the lower pulley 11. The electric hoist 14 leads to a lifting The hook 15 also includes a weight component 9 installed in the pit 13. The wire rope 10 passes through the lifting hole 24 of the weight component 9 and passes through the lifting hole 24 in sequence, bypassing the upper pulley 3, the lower pulley 11, the side pulley 12, Finally connected to the hook 15.

As shown in Figure 4, the installation structure of the upper pulley 3 is: including a flange top plate 16, a flange bottom plate 17 is installed on the upper part of the flange top plate 16 through fixing bolts 18 and locking nuts 19, and a flange bottom plate 17 is installed in the middle. Pulley support 20, the upper pulley 3 is installed through the pulley shaft 21 on the upper part of the pulley support 20, and the end cover 22 is installed on the end of the upper pulley 3.

The structures of the upper pulley 3, the lower pulley 11 and the side pulley 12 are the same.

As shown in Figure 5, a suspension rod 23 is installed in the middle of the weight assembly 9, and a suspension hole 24 is provided in the upper part of the suspension rod 23.

As shown in Figure 6, two groups are arranged in parallel and spaced apart on the operating platform 7. The structure of each group is as follows: including a wheel set panel 30 welded to the lower part of the operating platform 7. A wheel axle 25 is provided below the wheel set panel 30. A wheel 29 is installed on the wheel axle 25. A rim 28 is provided on the side of the wheel 29. Side plates 27 are respectively installed on the wheel axles 25 at both ends of the wheel 29. The ends of the wheel axle 25 are locked by large nuts 26.

The lower end of the support plate 4 is fixed to the ground embedded parts with high-strength bolts through flanges. The upper end is welded with a semicircular fan-shaped support plate 4 along the circumferential direction of the cylinder. The lower end of the support plate 4 is welded with reinforcement ribs 5 along the axial direction of the cylinder.

Main beam 2 is a rectangular welded box beam.

The test bench of the present invention adopts a two-legged and one-beam structure. The electric hoist 14 does not need to be installed on the test bench, but only needs to be placed on a movable bench on the ground. The mechanism of the test bench is also extremely convenient. The test bench mainly consists of: support leg 1, main beam 2, upper pulley 3, trolley track 6, running bench 7, weight assembly 9, wire rope system 10, lower pulley 11, and side pulley 12.

There are two support legs 1, cylindrical structure; one main beam 2, a rectangular welded box beam; the trolley track 6 is on the ground.

The support leg 1 is a cylindrical structure, with one support leg 1 at each end of the main beam 2. The lower end of the support leg 1 is fixed on the ground embedded part through a flange with high-strength bolts, and the upper end is welded with a semicircular fan-shaped support plate 4 along the circumferential direction of the cylinder. Reinforcing ribs 5 are welded along the cylindrical axis under the plate 4. The reinforcing ribs 5 strengthen the support plate 4. The main beam 2 is welded on the support plate 4. There is one main beam 2, which is a rectangular welded box beam, and both ends are welded to the support plate. 4 on; the upper pulley 3 consists of the pulley body, flange top plate 16, flange bottom plate 17, fixing bolts 18, locking nuts 19, pulley support 20, pulley shaft 21, and end cover 22. The flange top plate 16 is welded to the main body. On the beam 2, the flange bottom plate 17 is welded to the bottom end of the pulley support 20. The flange bottom plate 17 and the flange top plate 16 are connected together through fixing bolts 18 and locking nuts 19. The pulley shaft 21 supports the pulley and allows the pulley to rotate around it. Rotate, the end caps 22 are located at both ends of the pulley shaft 21, and are fixed on both sides of the pulley support 20 through bolts to block the pulley shaft 21 and prevent the pulley shaft 21 from moving axially; the ground 13 is dug out below the test bench for placement The weight component 9 is arranged with a lower pulley 11 and a side pulley 12; the weight component 9 is placed in the pit and consists of a weight block, a boom 23, and a lifting hole 24. The weight component 9 is connected to the lifting device through the lifting hole 24. The upper and lower pulleys 11 and side pulleys 12 have the same structure as the upper pulley 3 and are arranged in the pit 13 to change the direction of the force. The lower pulley 11 is arranged under the main beam 2 and the side pulley 12 is arranged on the electric hoist 14 below; the wire rope 10 passes through the lifting hole 24, bypasses the upper pulley 3, the lower pulley 11, the side pulley 12, and is finally connected to the hook 15 of the electric hoist 14; the trolley track 6 has two parallel ones, arranged on the hoist platform The ground on the side is used to guide and support the operating platform 7; the operating platform 7 is a small frame that can run along the track. There are two, respectively supporting the two ends of the electric hoist 14. The operating platform 7 is composed of conical wheels. 29. It consists of wheel rim 28, wheel side plate 27, wheel axle 25, wheel set panel 30, fixed large nut 26, and wedge-shaped spacer 8. The wheel set panel 30 is welded to the lower side of the running platform 7, and the wheel side plate 27 As a support for the wheel axle 25, the wheel 29 rotates around the wheel axle 25, and the large nut 26 fixes the wheel axle 25 to prevent the wheel axle 25 from moving axially; there are four wedge-shaped pads 8, which are placed on the running platform 7. Used to support and secure electric hoists14.

The test method of the present invention is as follows:

During the test, there is no need to install the electric hoist 14. You only need to place the electric hoist 14 on the operating platform 7. According to the length of the electric hoist 14, move the operating platform 7 along the trolley track 6 and adjust the distance between the two operating platforms 7. Spacing, the suspended hoist does not have a small frame, the wedge-shaped spacer 8 can be padded under the electric hoist 14 to prevent the electric hoist 14 from rolling. For the electric hoist 14 with a small frame, only the small frame needs to be placed on the running Just above the platform 7, the hook 15 of the electric hoist 14 hooks the rope head of the wire rope 10. The lifting and lowering of the electric hoist 14 is converted into the weight component 9 through the upper pulley 3, the lower pulley 11 and the side pulley 12. Lifting and lowering, thus realizing the test of electric hoist 14.

The test bench can realize the load test, lifting speed test, energy efficiency test and other test items of the electric hoist 14 except for the operation of the trolley.

The above description is an explanation of the present invention, not a limitation of the invention. Please refer to the claims for the limited scope of the present invention. Any modifications may be made within the protection scope of the present invention.

Claims (6)

1. An exempt from to install electric block energy efficiency test bench which characterized in that: the support legs (1) are arranged in parallel at intervals, support plates (4) are arranged on the inner sides of the two support legs (1), a main beam (2) is arranged on each support plate (4), and an upper pulley (3) is arranged at the middle position of the upper part of each main beam (2); the electric hoist is characterized by further comprising a trolley track (6) arranged on the ground on the side surface of the hoist platform, wherein an operation bench (7) is arranged on the trolley track (6), and an electric hoist (14) is arranged on the operation bench (7) through a wedge-shaped cushion block (8); the lower pulley (11) is arranged below the main beam (2), the side pulley (12) is arranged below the electric hoist (14), the side pulley (12) is arranged beside the lower pulley (11), the electric hoist (14) is led out of the lifting hook (15), the electric hoist further comprises a weight assembly (9) arranged in the pit (13), and the steel wire rope (10) passes through a hanging hole (24) of the weight assembly (9) and sequentially passes through the hanging hole (24), bypasses the upper pulley (3), the lower pulley (11), the side pulley (12) and is finally connected to the lifting hook (15); the running rack (7) is provided with two groups at intervals in parallel, and the structure of each group is as follows: the wheel assembly comprises a wheel assembly panel (30) welded at the lower part of a running rack (7), a wheel shaft (25) is arranged below the wheel assembly panel (30), a wheel (29) is arranged on the wheel shaft (25), a wheel rim (28) is arranged beside the wheel (29), side plates (27) are respectively arranged on the wheel shafts (25) at the two ends of the wheel (29), and the end parts of the wheel shaft (25) are locked through large nuts (26).

2. The installation-free electric block energy efficiency test stand of claim 1, wherein: the mounting structure of the upper pulley (3) is as follows: the novel pulley support comprises a flange top plate (16), wherein a flange bottom plate (17) is arranged on the upper portion of the flange top plate (16) through a fixing bolt (18) and a locking nut (19), a pulley support (20) is arranged in the middle of the flange bottom plate (17), an upper pulley (3) is arranged on the upper portion of the pulley support (20) through a pulley shaft (21), and an end cover (22) is arranged at the end portion of the upper pulley (3).

3. The installation-free electric block energy efficiency test stand of claim 1, wherein: the upper pulley (3), the lower pulley (11) and the side pulley (12) have the same structure.

4. The installation-free electric block energy efficiency test stand of claim 1, wherein: the middle part of the weight component (9) is provided with a suspender (23), and the upper part of the suspender (23) is provided with a hanging hole (24).

5. The installation-free electric block energy efficiency test stand of claim 1, wherein: the lower end of the supporting plate (4) is fixed on the ground embedded part through a flange by using a high-strength bolt, the upper end of the supporting plate is welded with the half-circumference sector supporting plate (4) along the circumferential direction of the cylinder, and the lower part of the supporting plate (4) is welded with the reinforcing rib (5) along the axial direction of the cylinder.

6. The installation-free electric block energy efficiency test stand of claim 1, wherein: the main beam (2) is a rectangular welding box beam.