Roller lifting device

Abstract

The utility model provides an idler wheel lifting device which comprises a pulley support, a pulley lifting device and a pulley lifting device, the pulley support comprises a first supporting plate and a second supporting plate which are vertically connected, and a mounting area is defined between the first supporting plate and the second supporting plate; the lifting assembly comprises a pulley and a steel wire rope, the pulley is arranged in the mounting area, a rope groove is formed around the circumferential surface of the pulley, the steel wire rope is wound in the rope groove, the lower surface of the steel wire rope is in surface contact with the bottom wall of the rope groove, and the upper surface of the steel wire rope and the first supporting plate are arranged at intervals; the lubricating nozzle is arranged on the first supporting plate, and the oil outlet end of the lubricating nozzle extends in the direction of a gap formed between the first supporting plate and the steel wire rope. The lifting device solves the technical problems that a steel wire rope of a traditional lifting device easily jumps out of a groove and is inconvenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment, in particular to a roller lifting device. Background Art

[0002] Currently, there are numerous types of lifting equipment on the market, widely used in emergency communications, lighting, reconnaissance, meteorology, lightning protection, firefighting, and other fields. Depending on their structural form, they can be categorized as single-threaded, multi-threaded, and wire rope types. Wire rope lifting masts utilize a wire rope for linkage lifting, offering fast lifting speeds, minimal wear, low power consumption, and a large load capacity. They can simultaneously erect multiple antennas, enabling comprehensive vehicle integration and improving response capabilities for emergency communications and on-site broadcasting.

[0003] The pulley lifting device is the most important component of the wire rope lifting mast. Multiple lifting pulley devices are installed on each section of the tube. As the requirements for the use of the lifting mast increase, the lifting mast can carry hundreds of kilograms of weight and can be unfolded up to tens of meters, and the requirements for the pulley lifting device are also getting higher and higher.

[0004] In actual use, since the lower surface of the wire rope and the upper surface of the pulley adopt point contact (or line contact), the wire rope may jump out of the groove from time to time; at the same time, the internal wire rope is inconvenient to maintain, which affects the service life of the product. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a roller lifting device to solve the technical problems in the related art that the steel wire rope of the traditional lifting device is easy to jump out of the groove and is inconvenient to maintain.

[0006] The utility model provides a roller lifting device, comprising:

[0007] The pulley bracket includes a first support plate and a second support plate connected vertically, wherein the first support plate and the second support plate enclose a mounting area;

[0008] A lifting assembly comprising a pulley and a steel wire rope, wherein the pulley is disposed in the mounting area and has a rope groove formed around its circumference. The steel wire rope is wound around the rope groove so that the lower surface of the steel wire rope is in surface contact with the bottom wall of the rope groove and the upper surface of the steel wire rope is spaced apart from the first support plate.

[0009] A lubrication nozzle is provided on the first support plate, and an oil outlet end of the lubrication nozzle extends toward a gap formed between the first support plate and the steel wire rope.

[0010] Furthermore, the cross-sectional area of ​​the rope groove increases from bottom to top.

[0011] Furthermore, the cross-section of the bottom wall of the rope groove is an arc-shaped structure, which is used to adapt to the lower surface of the steel wire rope.

[0012] Furthermore, the width of the gap formed between the first support plate and the upper surface of the steel wire rope is d1, and the cross-sectional diameter of the steel wire rope is d2, satisfying d1<d2.

[0013] Furthermore, the lubrication nozzle is arranged at an angle.

[0014] Furthermore, the first support plate is provided with an oil storage tank, and the oil inlet end of the lubrication nozzle is connected to the oil storage tank.

[0015] Furthermore, the pulley has a cavity, and a first rolling assembly and a second rolling assembly are provided in the cavity. The first rolling assembly and the second rolling assembly are sequentially socketed from the inside to the outside, and the second rolling assembly can rotate relative to the first rolling assembly, so as to link the pulley to rotate relative to the second support plate.

[0016] Furthermore, the first rolling assembly includes a pulley shaft and a first ring coaxially sleeved from the inside to the outside, and the pulley shaft is provided on the second support plate;

[0017] The second rolling assembly includes a bearing needle roller and a second ring which are sequentially sleeved from the inside to the outside. The bearing needle roller is fitted between the first ring and the second ring, and the second ring is fitted to the pulley.

[0018] Furthermore, the second support plate is provided with a plurality of fixing holes.

[0019] Compared with the prior art, the present invention has the following beneficial effects: by arranging the pulley in the installation area enclosed by the first support plate and the second support plate, the first support plate is located above the pulley, and when the wire rope is wound around the rope groove of the pulley, since its upper surface is spaced apart from the first support plate, it can prevent the wire rope from jumping out of the groove; at the same time, the bottom wall of the rope groove and the lower surface of the wire rope are in surface contact with each other, which increases the contact area between the two and also prevents the wire rope from jumping out of the groove; furthermore, a lubrication nozzle is provided in the gap formed between the first support plate and the wire rope for conveying lubricating oil and dripping the lubricating oil onto the wire rope at the pulley to maintain it and improve the service life of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a roller lifting device in one embodiment of the present utility model;

[0021] Figure 2 This is a partial structural diagram of a roller lifting device in one embodiment of the present utility model;

[0022] Figure 3This is a schematic structural diagram of a first rolling assembly, a second rolling assembly, and a pulley in one embodiment of the present invention;

[0023] Description of Figure Numbers:

[0024] 1. Pulley bracket; 101. First support plate; 102. Second support plate; 2. Pulley; 201. Rope groove; 3. Wire rope; 4. Lubrication nozzle; 5. Oil storage tank; 6. First rolling assembly; 601. Pulley shaft; 602. First ferrule; 7. Second rolling assembly; 701. Bearing needle roller; 702. Second ferrule; 8. Fixing hole.

[0025] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and beneficial effects of the present invention more clearly understood, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] In the embodiment of the present utility model, Figure 1 、 Figure 2 As shown, the roller lifting device includes: a pulley bracket 1, a lifting assembly and a lubrication nozzle 4; the pulley bracket 1 includes a first support plate 101 and a second support plate 102 connected vertically, and the first support plate 101 and the second support plate 102 enclose a mounting area; the lifting assembly includes a pulley 2 and a wire rope 3, the pulley 2 is arranged in the mounting area, and a rope groove 201 is provided around its circumference, the wire rope 3 is wound around the rope groove 201, and the lower surface of the wire rope 3 is in surface contact with the bottom wall of the rope groove 201, and its upper surface is spaced apart from the first support plate 101; the lubrication nozzle 4 is provided on the first support plate 101, and the oil outlet end of the lubrication nozzle 4 extends toward the gap formed between the first support plate 101 and the wire rope 3.

[0028] Specifically, in an embodiment of the present invention, the pulley bracket 1 includes a first support plate 101 and a second support plate 102 vertically connected to form an inverted L-shaped structure, and the two support plates can enclose an installation area with an opening structure, in which the pulley 2 can be installed, thereby forming the main structure of the device.

[0029] In this embodiment of the present invention, a rope groove 201 is provided along the circumference of the pulley 2, with the notch of the rope groove 201 facing outward. The wire rope 3 is passed through the rope groove 201 and looped around the pulley 2. When lifting equipment, the equipment is fixed to one end of the wire rope 3, and the other end is continuously applied with external force to gradually lift the equipment to a desired height. Furthermore, the rope groove 201 is deeper than conventional notches, allowing the lower surface of the wire rope 3 to contact the bottom wall of the rope groove 201 in a surface-to-surface manner, replacing the conventional point-to-point or line-to-line contact. This increased contact area allows the wire rope 3 to continuously move within the rope groove 201, preventing the wire rope 3 from jumping out of the groove. Furthermore, since the first support plate 101 extends outward and is suspended above the rope groove 201 under the action of the second support plate 102, when the wire rope 3 is placed in the rope groove 201, the upper surface of the wire rope 3 is spaced apart from the first support plate 101, which neither affects the normal lifting of the wire rope 3 nor prevents the wire rope 3 from jumping out of the groove, so that the first support plate 101 can constrain the jumping length of the wire rope 3 and prevent it from slipping out of the pulley 2.

[0030] In this embodiment of the present invention, a gap is formed between the first support plate 101 and the upper surface of the wire rope 3. A lubrication nipple 4 is located in this gap to deliver lubricating oil to the wire rope 3 within the rope groove 201 for easy maintenance. Furthermore, a ball bearing is installed at the oil outlet of the lubrication nipple 4. This ball bearing is tangential to the surface of the wire rope 3. During the lifting process of the wire rope 3, the ball bearing rotates around the lubrication nipple 4, discharging lubricating oil from the lubrication nipple 4 and applying it to the surface of the wire rope 3. Alternatively, the oil outlet of the lubrication nipple 4 can continuously or intermittently drip lubricating oil onto the wire rope 3, which also serves the purpose of lubrication.

[0031] In this embodiment, the pulley bracket 1 and the rope groove 201 cooperate to form a partially closed structure to prevent the wire rope 3 from jumping out of the rope groove 201. At the same time, the gap formed between the first support plate 101 and the wire rope 3 can, on the one hand, block the wire rope 3, and on the other hand, a lubrication nozzle 4 can be installed. The lubrication nozzle 4 can also prevent the wire rope 3 from jumping out of the groove, and the lubrication nozzle 4 can be used to automatically allow lubricating oil to penetrate into the wire rope 3, thereby automatically lubricating and maintaining the wire rope 3.

[0032] like Figure 2 As shown, in one embodiment, the cross-sectional area of ​​the rope groove 201 increases from bottom to top. Specifically, in order to improve the flexible lifting performance of the wire rope 3, this embodiment gradually increases the cross-sectional area of ​​the rope groove 201 from bottom to top, so that the lower surface of the wire rope 3 is in surface contact with the bottom of the rope groove 201, and the upper surface is gradually separated from the inner wall of the rope groove 201. This also facilitates the installation of the wire rope 3 in the rope groove 201, reduces installation accuracy and the required dimensional accuracy of the wire rope 3.

[0033] like Figure 2 As shown, in one embodiment, the cross-section of the bottom wall of the rope groove 201 is an arc-shaped structure, which is used to adapt to the lower surface of the steel wire rope 3. Specifically, in order to further ensure that the lower surface of the steel wire rope 3 is in surface contact with the bottom wall of the rope groove 201, the bottom shape of the rope groove 201 is formulated according to the shape of the lower surface of the steel wire rope 3 in this embodiment, so that it is constructed into an arc-shaped structure to facilitate fitting to the lower surface of the steel wire rope 3.

[0034] like Figure 2 As shown, in one embodiment, the width of the gap formed between the first support plate 101 and the upper surface of the wire rope 3 is d1, and the cross-sectional diameter of the wire rope 3 is d2, satisfying d1 < d2. Specifically, to further confine the wire rope 3 within the rope groove 201, this embodiment defines the width of the gap to be smaller than the diameter of the wire rope 3. The first support plate 101 blocks the rope groove 201, thereby preventing the wire rope 3 from slipping out of the rope groove 201.

[0035] like Figure 1 As shown, in one embodiment, the lubrication nozzle 4 is tilted, which is more fuel-efficient than a vertical arrangement. Preferably, the first support plate 101 is provided with an oil reservoir 5, and the oil inlet of the lubrication nozzle 4 is connected to the oil reservoir 5. Regularly adding lubricating oil to the oil reservoir 5 ensures continuous lubrication and maintenance of the device.

[0036] like Figure 3 As shown, in one embodiment, the pulley 2 has a cavity, and a first rolling assembly 6 and a second rolling assembly 7 are disposed in the cavity. The first rolling assembly 6 and the second rolling assembly 7 are sequentially connected from the inside to the outside, and the second rolling assembly 7 can rotate relative to the first rolling assembly 6 to link the pulley 2 to rotate relative to the second support plate 102. Specifically, in order to replace the traditional customized rolling bearings, make the wire rope 3 slide more smoothly, and enhance the load-bearing capacity of the pulley 2, this embodiment is provided with two rolling assemblies in the cavity of the pulley 2.

[0037] Furthermore, in one embodiment, the first rolling assembly 6 includes a pulley shaft 601 and a first ring 602 coaxially sleeved from the inside out. The pulley shaft 601 is mounted on the second support plate 102. The second rolling assembly 7 includes a bearing needle roller 701 and a second ring 702 sleeved from the inside out. The bearing needle roller 701 fits between the first ring 602 and the second ring 702, and the second ring 702 fits the pulley 2. Traditional custom bearings are difficult to meet practical requirements due to their large variety and small quantity, resulting in high costs and long production cycles. The first and second rings 602 and 702 are modified from standard bearing inner rings (GB / T 5801), with inner and outer diameters selected and lengths cut as needed. The bearing needle roller 701 is a standard component (GB / T 309), with both length and diameter selected as needed. Apply a proper amount of lubricating oil. Under the action of tension or gravity, the pulley 2 rotates, and the bearing needle 701 plays the role of a rolling bearing, replacing the traditional customized rolling bearing. It slides smoothly and has a strong load-bearing capacity, thereby reducing the possibility of bearing damage.

[0038] like Figure 1 As shown, in one embodiment, the second support plate 102 is provided with a plurality of fixing holes 8 for being mounted and fixed to the pipe body.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A roller lifting device, characterized in that: include: The pulley bracket includes a first support plate and a second support plate connected vertically, wherein the first support plate and the second support plate enclose a mounting area; A lifting assembly comprising a pulley and a steel wire rope, wherein the pulley is disposed in the mounting area and has a rope groove formed around its circumference. The steel wire rope is wound around the rope groove so that the lower surface of the steel wire rope is in surface contact with the bottom wall of the rope groove and the upper surface of the steel wire rope is spaced apart from the first support plate. A lubrication nozzle is provided on the first support plate, and an oil outlet end of the lubrication nozzle extends toward a gap formed between the first support plate and the steel wire rope.

2. A roller lifting device according to claim 1, characterized in that: The cross-sectional area of ​​the rope groove increases from bottom to top.

3. The roller lifting device according to claim 1, characterized in that: The cross section of the bottom wall of the rope groove is an arc-shaped structure, which is used to adapt to the lower surface of the steel wire rope.

4. The roller lifting device according to claim 1, characterized in that: The width of the gap formed between the first support plate and the upper surface of the steel wire rope is d1, and the cross-sectional diameter of the steel wire rope is d2, satisfying d1<d2.

5. The roller lifting device according to claim 1, characterized in that: The lubrication nozzle is arranged obliquely.

6. A roller lifting device according to any one of claims 1 to 5, characterized in that: The first support plate is provided with an oil storage tank, and the oil inlet end of the lubrication nozzle is connected to the oil storage tank.

7. A roller lifting device according to any one of claims 1 to 5, characterized in that: The pulley has a cavity, and a first rolling assembly and a second rolling assembly are provided in the cavity. The first rolling assembly and the second rolling assembly are sequentially connected from the inside to the outside, and the second rolling assembly can rotate relative to the first rolling assembly, so as to link the pulley to rotate relative to the second support plate.

8. The roller lifting device according to claim 7, characterized in that: The first rolling assembly includes a pulley shaft and a first ring coaxially sleeved from the inside to the outside, and the pulley shaft is provided on the second support plate; The second rolling assembly includes a bearing needle roller and a second ring which are sequentially sleeved from the inside to the outside. The bearing needle roller is fitted between the first ring and the second ring, and the second ring is fitted to the pulley.

9. The roller lifting device according to claim 1, characterized in that: The second support plate is provided with a plurality of fixing holes.

Images