A lubricating device for crane maintenance

Abstract

The application discloses a lubricating device for crane maintenance, which comprises a lubricating mechanism, a driving mechanism and an oil tank, the lubricating mechanism comprises a lubricating cylinder and a rope penetrating hole in the middle part of the lubricating cylinder, the lubricating cylinder comprises a first oil injection cavity and a second oil injection cavity connected with the oil tank, two oil outlets on the inner wall of the inner cylinder are communicated with the first oil injection cavity and the second oil injection cavity respectively, a first ring plug is slidably arranged in the first oil injection cavity, a first pressing rod is connected to the top of the first ring plug, a second ring plug is slidably arranged in the second oil injection cavity, a second pressing rod is connected to the second ring plug, the top of the outer cylinder is configured in an end face cam shape, a first guide rod and a second guide rod are vertically and elastically arranged on the corresponding wheel wall of the end face cam, and the first guide rod and the first pressing rod and the second pressing rod and the second guide rod are connected; the driving mechanism comprises a friction wheel arranged on the side wall of the steel wire rope, and the friction wheel can drive the lubricating cylinder to rotate synchronously when the friction wheel rotates, and the lubricating efficiency on the steel wire rope is improved as a whole.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lubricating device, in particular to a lubricating device for crane maintenance. BACKGROUND

[0002] Steel wire rope electric hoist is a small lifting device with compact structure, light weight, small size, strong universality of parts and convenient operation, mainly used for various lifting, moving, loading and unloading heavy objects, oil tank welding and other operation projects. In order to reduce friction loss and improve safety factor, the steel wire rope on the electric hoist often needs to be coated with lubricating oil by the staff before use, which makes the steel wire rope electric hoist very inconvenient in actual use.

[0003] The prior art such as patent application No. 202123374847.0, patent name "automatic oiling steel wire rope electric hoist", through the extrusion effect of the extrusion hole on the extrusion block on the lubricating oil, the fiber strip on the air bag can brush the lubricating oil with better effect, which can achieve the effect of pushing, brushing and coating. It indeed improves the lubricating efficiency of the steel wire rope to some extent, but it can only lubricate the steel wire rope from one side, and the uniformity of the lubricating of the steel wire rope is not high. SUMMARY

[0004] Therefore, the present application provides a lubricating device for crane maintenance to solve the above-mentioned defects in the prior art.

[0005] A lubricating device for crane maintenance, comprising:

[0006] A lubricating mechanism, comprising a lubricating cylinder rotatably installed below the electric hoist and a rope penetrating hole arranged inside the lubricating cylinder for vertically penetrating the steel wire rope, the lubricating cylinder comprising an outer cylinder, an inner cylinder and a ring plate arranged between the outer cylinder and the inner cylinder, a first oil injection cavity being formed between the outer cylinder and the ring plate, a second oil injection cavity being formed between the ring plate and the inner cylinder, two oil outlets being formed on the lower inner wall of the inner cylinder, the two oil outlets being respectively communicated with the first oil injection cavity and the second oil injection cavity, a first ring plug being slidably arranged inside the first oil injection cavity, a first pressure rod being connected above the first ring plug, a second ring plug being slidably arranged inside the second oil injection cavity, a second pressure rod being connected to the second ring plug, the upper portion of the outer cylinder being configured in an end face cam shape, a first guide rod and a second guide rod being vertically and elastically pressed on the corresponding wheel wall of the end face cam, the first guide rod and the first pressure rod being connected by a connecting plate, the second pressure rod and the second guide rod being connected by a connecting plate;

[0007] A driving mechanism includes a friction wheel driving a steel wire rope side wall extruded above the lubricating cylinder through an extension mechanism, the friction wheel and the lubricating cylinder are connected through a transmission mechanism, the friction wheel can drive the lubricating cylinder to rotate synchronously when the friction wheel rotates;

[0008] An oil tank is connected with the first oil injection cavity through a first oil injection pipe, and is connected with the second oil injection cavity through a second oil injection pipe.

[0009] Preferably, the first oil injection cavity is communicated with one of the oil outlets through a flow guide pipe, the flow guide pipe is provided with a first one-way flow-out valve, the other oil outlet is provided with a second one-way flow-out valve, the first oil injection pipe is provided with a first one-way flow-in valve, and the second oil injection pipe is provided with a second one-way flow-in valve.

[0010] Preferably, the lubricating cylinder is installed below the electric hoist through a mounting bracket, a rotating ring is installed on the mounting bracket, the outer cylinder of the lubricating cylinder is rotatably installed on the rotating ring, a mounting plate located above the lubricating cylinder is further arranged on the mounting bracket, the first guide rod, the second guide rod, the first pressing rod and the second pressing rod all vertically slide through the mounting plate, and the lower ends of the first guide rod and the second guide rod are connected with the lower surface of the mounting plate through compression springs.

[0011] Preferably, the lower ends of the first guide rod and the second guide rod are rotatably installed with roller wheels acting on the upper end wheel wall of the end face cam.

[0012] Preferably, the extension mechanism includes horizontally arranged guide rails installed below the electric hoist through connecting rods and sliding wheel seats slidably installed on the guide rails, the friction wheel is rotatably installed on the sliding wheel seat, a threaded rod parallel to the guide rail is installed on the sliding wheel seat through a screw nut, and the threaded rod is driven to rotate through a motor.

[0013] Preferably, the transmission mechanism includes a rotating shaft rotatably installed below the electric hoist, a first bevel gear sleeved on the outer wall of the outer cylinder and a worm rotatably installed on the wheel shaft part of the friction wheel and rotating with the friction wheel, the rotating shaft is provided with a worm wheel capable of being meshed with the worm and a second bevel gear capable of being meshed with the first bevel gear.

[0014] Preferably, a guide wheel is further installed above the rope penetrating hole, the steel wire rope vertically extending to the central part of the rope penetrating hole is guided through the guide wheel, and the friction wheel is located on one side of the steel wire rope above the guide wheel.

[0015] The present application has the following advantages:

[0016] The device of the present application realizes the rotation of the lubricating cylinder and the alternate oil supplement of the oil tank to the first oil injection cavity and the second oil injection cavity during the lifting of the steel wire rope through the cooperation of the lubricating mechanism, the driving mechanism and the oil tank, the transmission of the friction force between the friction wheel and the steel wire rope during the working process, the alternate oil discharge of the first oil injection cavity and the second oil injection cavity, the continuous lubrication of the circumference of the steel wire rope, the synchronous lubrication of the steel wire rope during the working of the crane, the improvement of the uniformity of the lubrication of the steel wire rope and the overall improvement of the lubrication efficiency of the steel wire rope. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the overall structure schematic diagram of the present application;

[0018] Fig. 2 It is the local structure schematic diagram of the present application;

[0019] Fig. 3 It is the local structure schematic diagram of the lubricating cylinder of the present application;

[0020] Fig. 4 It is the local internal structure schematic diagram of the present application.

[0021] In the drawing:

[0022] 1-lubricating mechanism; 2-guide wheel; 3-driving mechanism; 4-oil tank; 10-electric hoist; 20-steel wire rope;

[0023] 101-lubricating cylinder; 102-rope passing hole; 103-outer cylinder; 104-inner cylinder; 105-ring plate; 106-first oil injection cavity; 107-second oil injection cavity; 108-first ring plug; 109-second ring plug; 110-end face cam; 111-second pressing rod; 112-first pressing rod; 113-second guide rod; 114-first guide rod; 115-connecting plate; 116-first bevel gear; 117-second bevel gear; 118-rotation rod; 119-turbine; 120-mounting plate; 121-mounting support; 122-rotation ring; 123-compression spring; 124-roller;

[0024] 301-friction wheel; 302-connecting rod; 303-guide rail; 304-sliding wheel seat; 305-threaded rod; 306-motor; 307-worm gear;

[0025] 401-first oil injection pipe; 402-second oil injection pipe. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0027] As Figs. 1 to 4As shown, the present application provides a lubricating device for crane maintenance, comprising a lubricating mechanism 1, a guide wheel 2, a driving mechanism 3 and an oil tank 4.

[0028] The lubricating mechanism 1 comprises a lubricating cylinder 101 rotatably installed below the electric hoist 10 and a rope passing hole 102 arranged inside the lubricating cylinder 101 for vertically penetrating the steel wire rope 20, the lubricating cylinder 101 comprises an outer cylinder 103, an inner cylinder 104 and a ring plate 105 arranged between the outer cylinder 103 and the inner cylinder 104, a first oil injection cavity 106 is formed between the outer cylinder 103 and the ring plate 105, a second oil injection cavity 107 is formed between the ring plate 105 and the inner cylinder 104, two oil outlets 130 are arranged on the lower inner wall of the inner cylinder 104, and the two oil outlets 130 are respectively connected with the first oil injection cavity 106 and the second oil injection cavity 107.

[0029] The first oil injection cavity 106 is connected with one of the oil outlets 130 through a flow guide pipe 129, the flow guide pipe 129 is provided with a first one-way flow valve 127, and the other oil outlet 130 is provided with a second one-way flow valve 128.

[0030] A first ring plug 108 is slidably arranged in the first oil injection cavity 106, a first pressure rod 112 is connected to the upper portion of the first ring plug 108, a second ring plug 109 is slidably arranged in the second oil injection cavity 107, a second pressure rod 111 is connected to the second ring plug 109, the upper portion of the outer cylinder 103 is configured in the shape of an end face cam 110, a first guide rod 114 and a second guide rod 113 are vertically and elastically arranged on the corresponding wheel wall of the end face cam 110, and the first guide rod 114 and the first pressure rod 112 and the second pressure rod 111 and the second guide rod 113 are connected through a connecting plate 115.

[0031] The lubricating cylinder 101 is installed below the electric hoist 10 through a mounting bracket 121, a rotating ring 122 is installed on the mounting bracket 121, the outer cylinder 103 of the lubricating cylinder 101 is rotatably installed on the rotating ring 122, a mounting plate 120 is arranged above the lubricating cylinder 101 on the mounting bracket 121, the first guide rod 114, the second guide rod 113, the first pressure rod 112 and the second pressure rod 111 vertically and slidably penetrate the mounting plate 120, and the lower ends of the first guide rod 114 and the second guide rod 113 are connected with the lower surface of the mounting plate 120 through a compression spring 123.

[0032] The lower ends of the first guide rod 114 and the second guide rod 113 are rotatably installed with a roller 124 acting on the end face cam 110.

[0033] The driving mechanism 3 comprises a friction wheel 301 capable of extruding the sidewall of the steel wire rope 20 above the lubricating cylinder 101 through an extension mechanism.

[0034] The extension mechanism comprises horizontally arranged guide rails 303 installed below the electric hoist 10 through connecting rods 302, and a sliding wheel base 304 slidingly installed on the guide rails 303, the friction wheel 301 is rotatably installed on the sliding wheel base 304, and a threaded rod 305 parallel to the guide rails 303 is installed on the sliding wheel base 304 through a screw nut (not shown in the figure), and the threaded rod 305 is driven to rotate by a motor 306.

[0035] The friction wheel 301 and the lubricating cylinder 101 are connected through a transmission mechanism, and the friction wheel 301 can drive the lubricating cylinder 101 to rotate synchronously when the friction wheel 301 rotates.

[0036] The transmission mechanism comprises a rotating rod 118 rotatably installed below the electric hoist 10, a first bevel gear 116 sleeved on the outer wall of the outer cylinder 103, and a worm 307 installed on the wheel shaft part of the friction wheel 301 and rotating with the friction wheel 301, the rotating rod 118 is provided with a worm wheel 119 capable of meshing with the worm 307 and a second bevel gear 117 capable of meshing with the first bevel gear 116.

[0037] The oil tank 4 is connected with the first oil injection cavity 106 through a first oil injection pipe 401, and the oil tank 4 is connected with the second oil injection cavity 107 through a second oil injection pipe 402.

[0038] The guide wheel 2 is installed above the rope penetrating hole 102, the steel wire rope 20 guided through the guide wheel 2 can vertically extend to the central part of the rope penetrating hole 102, and the friction wheel 301 is located on one side of the steel wire rope 20 above the guide wheel 2.

[0039] The working principle of the device is:

[0040] I. Preparation:

[0041] When the steel wire rope 20 needs to be lubricated, first, pour lubricating oil into the oil tank 4.

[0042] Afterwards, the motor 306 drives the threaded rod 305 to rotate, the threaded rod 305 drives the sliding wheel seat 304 assembled thereon to move to the side of the steel wire rope 20 under the guidance of the guide rail 303, so that the friction wheel 301 presses the side wall of the steel wire rope 20, and the friction between them is increased. That is, the up and down movement of the steel wire rope 20 can drive the friction wheel 301 to rotate.

[0043] At the same time, in the moving process of the friction wheel 301, the worm 307 installed at one end of the wheel shaft of the friction wheel 301 will be in meshing contact with the worm wheel 119 on one side.

[0044] II. Lubrication and maintenance:

[0045] At the same time, in the moving process of the friction wheel 301, the worm 307 installed at one end of the wheel shaft of the friction wheel 301 will be in meshing contact with the worm wheel 119 on one side.

[0046] In the rotating process of the end face cam 110 at the upper end of the lubricating cylinder 101, the first guide rod 114 and the second guide rod 113 thereon will be driven to alternately rise and fall.

[0047] When the second guide rod 113 slides from the high point to the low point of the end face cam 110, at this time the second guide rod 113 will sink due to the stretching action of the compression spring 123, and since the second guide rod 113 and the second pressing rod 111 are connected through the connecting plate 115, the second pressing rod 111 will also sink, and the second ring plug 109 at the lower end of the second pressing rod 111 will press the lubricating oil in the second oil injection cavity 107, so as to squeeze the lubricating oil out of the second worm wheel 117 to the oil outlet 130, and in the process of rotating with the lubricating cylinder 101, the circumferential direction of the steel wire rope 20 is lubricated.

[0048] At the same time, when the first guide rod 114 moves from the low point to the high point of the end face cam 110, at this time the first guide rod 114 will rise along the surface of the end face cam 110, and since the first guide rod 114 and the first pressing rod 112 are connected through the connecting plate 115, the first pressing rod 112 will also rise, and the first ring plug 108 connected at the lower end of the first pressing rod 112 will rise along the first oil injection cavity 106, so as to form a negative pressure in the first oil injection cavity 106, so that the lubricating oil in the oil tank 4 enters the first oil injection cavity 106 through the first oil injection pipe 401, forming a supplement of the lubricating oil in the first oil injection cavity 106.

[0049] With further rotation of the lubricating cylinder 101, the second pressure rod 111 will be synchronized with the second guide rod 113 to rise, the second ring plug 109 connected to the lower end of the second pressure rod 111 will rise along the second oil injection cavity 107, a negative pressure is formed inside the second oil injection cavity 107, lubricating oil in the oil tank 4 enters the second oil injection cavity 107 through the second oil injection pipe 402, thereby replenishing the second oil injection cavity 107 which has been emptied of lubricating oil, facilitating the next use; while the first guide rod 114 and the first pressure rod 112 will be synchronized to descend, the first ring plug 108 connected to the lower end of the first pressure rod 112 will descend along the first oil injection cavity 106, thereby discharging the lubricating oil previously added in the first oil injection cavity 106 from the oil outlet 130 along the flow guide pipe 129, and further lubricating the circumferential surface of the steel wire rope 20 with the rotation of the lubricating cylinder 101.

[0050] The device of the present application synchronously completes the rotation of the lubricating cylinder 101 and the alternate oil replenishment of the oil tank 4 to the first oil injection cavity 106 and the second oil injection cavity 107 through the cooperation between the lubricating mechanism 1, the driving mechanism 3 and the oil tank 4, and the transmission of the friction force between the friction wheel 301 and the steel wire rope 20 during operation, so that the first oil injection cavity 106 and the second oil injection cavity 107 can alternate oil discharge, realize continuous lubrication of the circumference of the steel wire rope 20, and complete the lubrication of the steel wire rope 20 synchronously during the operation of the crane, thereby improving the uniformity of lubrication of the steel wire rope 20 and the overall lubrication efficiency of the steel wire rope 20.

[0051] Although the present application has been described in detail with general description and specific embodiments above, some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the present application, all belong to the scope of protection claimed by the present application.

Claims

1. A lubricating device for the maintenance of a crane, characterized in that: Comprising The lubricating mechanism (1) comprises a lubricating cylinder (101) rotatably installed below the electric hoist (10) and a rope passing hole (102) arranged inside the lubricating cylinder (101) for vertically penetrating the steel wire rope (20), the lubricating cylinder (101) comprises an outer cylinder (103), an inner cylinder (104) and a ring plate (105) arranged between the outer cylinder (103) and the inner cylinder (104), a first oil injection cavity (106) is formed between the outer cylinder (103) and the ring plate (105), a second oil injection cavity (107) is formed between the ring plate (105) and the inner cylinder (104), two oil outlets (130) are arranged on the lower inner wall of the inner cylinder (104), the two oil outlets (130) are respectively connected with the first oil injection cavity (106) and the second oil injection cavity (107), a first ring plug (108) is slidably arranged inside the first oil injection cavity (106), a first pressure rod (112) is connected above the first ring plug (108), a second ring plug (109) is slidably arranged inside the second oil injection cavity (107), a second pressure rod (111) is connected above the second ring plug (109), the upper portion of the outer cylinder (103) is configured in an end face cam (110) shape, a first guide rod (114) and a second guide rod (113) are vertically and elastically arranged on the corresponding wheel wall of the end face cam (110), the first guide rod (114) and the first pressure rod (112) are connected through a connecting plate (115), and the second pressure rod (111) and the second guide rod (113) are connected through the connecting plate (115); The driving mechanism (3) comprises a friction wheel (301) capable of being pressed on the side wall of the steel wire rope (20) above the lubricating cylinder (101) and driven by the extension mechanism, the friction wheel (301) and the lubricating cylinder (101) are connected through a transmission mechanism, and the friction wheel (301) can drive the lubricating cylinder (101) to rotate synchronously when the friction wheel (301) rotates; The oil tank (4) is connected with the first oil injection cavity (106) through a first oil injection pipe (401), and the oil tank (4) is connected with the second oil injection cavity (107) through a second oil injection pipe (402).

2. A lubricating device for the maintenance of a crane according to claim 1, characterized in that: The first oil injection cavity (106) and one of the oil outlets (130) are connected through a flow guide pipe (129), the flow guide pipe (129) is provided with a first one-way outflow valve (127), the other oil outlet (130) is provided with a second one-way outflow valve (128), the first oil injection pipe (401) is provided with a first one-way inflow valve (125), and the second oil injection pipe (402) is provided with a second one-way inflow valve (126).

3. A lubricating device for the maintenance of a crane according to claim 1, characterized in that: The lubricating cylinder (101) is installed below the electric hoist (10) through a mounting bracket (121), a rotating ring (122) is installed on the mounting bracket (121), the outer cylinder (103) of the lubricating cylinder (101) is rotatably installed on the rotating ring (122), a mounting plate (120) is further arranged on the mounting bracket (121) above the lubricating cylinder (101), the first guide rod (114), the second guide rod (113), the first pressing rod (112) and the second pressing rod (111) all vertically slide through the mounting plate (120), and the lower ends of the first guide rod (114) and the second guide rod (113) are connected with the lower surface of the mounting plate (120) through compression springs (123).

4. A lubricating device for the maintenance of a crane according to claim 1, characterized in that: Rollers (124) acting on the upper end wheel wall of the end face cam (110) are rotatably installed on the lower ends of the first guide rod (114) and the second guide rod (113).

5. A lubricating device for the maintenance of a crane according to claim 1, characterized in that: The extension mechanism comprises horizontally arranged guide rails (303) installed below the electric hoist (10) through connecting rods (302) and sliding wheel seats (304) slidingly installed on the guide rails (303), the friction wheel (301) is rotatably installed on the sliding wheel seat (304), a threaded rod (305) parallel to the guide rail (303) is installed on the sliding wheel seat (304) through a screw nut, and the threaded rod (305) is driven to rotate by a motor (306).

6. A lubricating device for the maintenance of a crane according to claim 1, characterized in that: The transmission mechanism comprises a rotating shaft (118) vertically rotatably installed below the electric hoist (10), a first bevel gear (116) sleeved on the outer wall of the outer cylinder (103) and a worm (307) rotatably installed on the axle part of the friction wheel (301) and rotating with the friction wheel (301), the rotating shaft (118) is provided with a worm wheel (119) capable of being meshed with the worm (307) and a second bevel gear (117) capable of being meshed with the first bevel gear (116).

7. A lubricating device for the maintenance of a crane according to claim 1, characterized in that: A guide wheel (2) is further installed above the rope penetrating hole (102), the steel wire rope (20) guided through the guide wheel (2) can vertically extend to the central part of the rope penetrating hole (102), and the friction wheel (301) is located on one side of the steel wire rope (20) above the guide wheel (2).

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