Automatic greasing device for three surfaces of T-shaped elevator guide rail

Abstract

A T-shaped elevator guide rail three-face automatic greasing device comprises a top face greasing mechanism and a side face greasing mechanism which are arranged in sequence. The top face greasing mechanism comprises a first portal frame and a top face greasing assembly. The top face greasing assembly comprises a vertical adjusting square rod, a first limiting sleeve, a first limiting sleeve rod, a first grease containing box, a first rolling wheel, a first grease injection branch pipe and a first adjusting bolt. When the elevator guide rail enters the first portal frame, the first rolling wheels take out the anti-rust grease and smear the anti-rust grease to the top face of the elevator guide rail vertical plate. The side face greasing mechanism comprises a second portal frame and a side face greasing assembly. The side face greasing assembly comprises a transverse adjusting square rod, a second limiting sleeve, a second limiting sleeve rod, a second grease containing box, a second rolling wheel, a second grease injection branch pipe and a second adjusting bolt. When the elevator guide rail enters the second portal frame, the second rolling wheel brings out the anti-rust grease and smears the anti-rust grease to the side face of the elevator guide rail vertical plate. According to the device, the three faces of the elevator guide rail are automatically greased through the top face greasing mechanism and the side face greasing mechanism which are arranged in sequence, and efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator parts production, in particular to a three-side automatic grease coating device for a T-shaped elevator guide rail. Background Art

[0002] At present, there are two main ways to prevent rust on the processed surface of T-type elevator guide rails: applying anti-rust oil and anti-rust grease. Regardless of whether it is applying anti-rust oil or anti-rust grease, oil / grease must be applied to the three processed surfaces of the central vertical plate of the T-type elevator guide rail. The three processed surfaces include two opposite side surfaces and one top surface of the vertical plate.

[0003] The traditional anti-rust grease coating device includes a grease box and a roller arranged in the grease box. The grease box is provided with an opening for the roller to be exposed. When the roller rotates, the anti-rust grease in the grease box is brought out and smeared on the processing surface of the T-shaped elevator guide rail. This traditional anti-rust grease coating device has the following defects when used in actual working conditions:

[0004] 1) The distance between a pair of rollers arranged on the two sides of the vertical plate is not adjustable, which makes the traditional anti-rust grease coating device less applicable and cannot be applied to different types of T-type elevator guide rails;

[0005] 2) The roller is fixed, and the distance between the roller and the processing surface of the elevator guide rail is a static distance. If the elevator guide rail is not centered during the forward movement on the conveyor belt, it may cause uneven oiling. Although the roller can be made of elastic rubber material to alleviate this problem, it still cannot effectively ensure uniform oiling of the working surface of the elevator guide rail;

[0006] 3) The thick anti-rust grease in the grease box is filled around the roller only by its own gravity, and it is impossible to avoid the bubbles inside the anti-rust grease, which causes the roller to carry out the anti-rust grease unevenly, thus causing uneven grease coating on the elevator guide rail processing surface;

[0007] 4) It is impossible to apply anti-rust grease to three sides of the T-type elevator guide rail at the same time, which is inefficient. Utility Model Content

[0008] In view of the deficiencies in the prior art, the utility model provides a three-side automatic grease coating device for a T-shaped elevator guide rail to overcome the deficiencies in the prior art.

[0009] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] The invention discloses a three-side automatic greasing device for a T-shaped elevator guide rail, comprising a frame, a conveyor belt assembly is arranged on the frame, and a top surface greasing mechanism and a side surface greasing mechanism are arranged on the frame in sequence along the conveying direction of the T-shaped elevator guide rail.

[0011] The top surface grease coating mechanism comprises a No. 1 gantry and a top surface grease coating assembly arranged on the No. 1 gantry; the top surface grease coating assembly comprises a vertical adjustment square rod, a first limit sleeve, a first limit sleeve rod, a first grease box, a first roller, a first grease injection branch pipe and a first adjustment bolt;

[0012] The vertical adjustment square rod vertically penetrates the No. 1 assembly square hole on the No. 1 gantry; the vertical adjustment square rod, the first limit sleeve, the first limit sleeve and the first grease box are connected in sequence; a first grease outlet is provided at the bottom of the first grease box; the first roller is rotatably installed in the first grease box, and the bottom arc surface of the first roller is exposed from the first grease outlet; the first adjustment bolt laterally penetrates the No. 1 assembly square hole on the No. 1 gantry and presses against the vertical adjustment square rod.

[0013] Furthermore, the side grease coating mechanism comprises a second gantry and a pair of side grease coating components symmetrically arranged on the second gantry; the side grease coating components comprise a transverse adjustment square rod, a second limit sleeve, a second limit sleeve rod, a second grease box, a second roller, a second grease injection branch pipe and a second adjustment bolt;

[0014] The transverse adjustment square rod transversely penetrates the No. 2 assembly square hole on the No. 2 gantry; the transverse adjustment square rod, the second limit sleeve, the second limit sleeve rod and the second grease box are connected in sequence; a second grease outlet is opened on the side of the second grease box facing the T-shaped elevator guide rail; the second roller is rotatably installed in the second grease box, and the arc surface of the second roller is exposed from the second grease outlet; the second adjustment bolt laterally penetrates the No. 2 assembly square hole on the No. 2 gantry and presses against the transverse adjustment square rod.

[0015] Furthermore, the vertical adjustment square rod is axially fixedly connected to the first end of the first limiting sleeve as a whole; the transverse adjustment square rod is axially fixedly connected to the first end of the second limiting sleeve as a whole.

[0016] Furthermore, a first limiting convex ring is protruding from the inner wall of the tube cavity at the second end of the first limiting sleeve; the first end of the first limiting sleeve rod is slidably sleeved in the first limiting sleeve, and a second limiting convex ring is protruding from the outer wall of the first end of the first limiting sleeve rod; the second limiting convex ring cooperates with the first limiting convex ring.

[0017] Furthermore, the second end of the first limiting sleeve rod is fixedly connected to the first grease containing box as a whole, and the first limiting sleeve rod is sleeved with a first spring, one end of the first spring is connected to the first limiting sleeve, and the other end is connected to the first grease containing box.

[0018] Furthermore, a third limiting convex ring is protruding from the inner wall of the tube cavity at the second end of the second limiting sleeve; the first end of the second limiting sleeve rod is slidably sleeved in the second limiting sleeve, and a fourth limiting convex ring is protruding from the outer wall of the first end of the second limiting sleeve rod; the fourth limiting convex ring cooperates with the third limiting convex ring.

[0019] Furthermore, the second end of the second limiting sleeve rod is fixedly connected to the second grease containing box as a whole, and the second limiting sleeve rod is sleeved with a second spring, one end of the second spring is connected to the second limiting sleeve, and the other end is connected to the second grease containing box.

[0020] Furthermore, one end of the first grease injection branch pipe is connected to the first grease containing box, and the other end is connected to the external grease tank, and a first throttle valve is provided on the first grease injection branch pipe; one end of the second grease injection branch pipe is connected to the second grease containing box, and the other end is connected to the external grease tank, and a second throttle valve is provided on the second grease injection branch pipe.

[0021] Furthermore, the grease tank is also connected to a pressure pump through a pipeline, and a solenoid valve and a pressure gauge are also provided on the pipeline between the grease tank and the pressure pump. The pressure pump, the solenoid valve and the pressure gauge are electrically connected to a controller.

[0022] Furthermore, a through slot is vertically opened on the crossbeam of the No. 2 gantry, and the second grease injection branch pipe passes through the through slot and is connected to an external grease tank.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] 1) In this case, a three-sided automatic greasing device for a T-shaped elevator guide rail is provided. By means of a top greasing mechanism and a side greasing mechanism which are arranged successively, the top surface of the elevator guide rail is greased first and then the side surface of the elevator guide rail is greased. The three-sided greasing is automatically completed with high efficiency and an orderly greasing process. The unevenness caused by the overflow of anti-rust grease from the top surface when the three sides of the vertical plate of the elevator guide rail are greased simultaneously can be avoided.

[0025] 2) In this case, a three-sided automatic greasing device for a T-shaped elevator guide rail is provided. Under the action of a first spring, a first roller abuts against the top surface of the T-shaped elevator guide rail, so that the greasing is evenly applied; under the action of a second spring, a second roller abuts against the side surface of the T-shaped elevator guide rail, so that the greasing is further evenly applied.

[0026] 3) In this case, a three-sided automatic greasing device for a T-type elevator guide rail is provided. The height of the first roller is adjusted by a first adjusting bolt, and the spacing between a pair of second rollers is adjusted by a second adjusting bolt, so that the device is suitable for greasing T-type elevator guide rails of different models, widths, and heights, and has stronger applicability.

[0027] 4) In this case, a three-sided automatic greasing device for a T-shaped elevator guide rail is provided with an external grease tank, which is connected to a pressure pump through a pipeline, and a solenoid valve and a pressure gauge are also provided on the pipeline between the grease tank and the pressure pump. The pressure pump, the solenoid valve and the pressure gauge are electrically connected to a controller, and the controller controls the opening and closing of the solenoid valve by detecting the value of the pressure gauge, so that the grease in the grease tank can be continuously transported to the first grease box and the second grease box. In addition, the first grease injection branch pipe and the second grease injection branch pipe are both provided with throttle valves, which ensures that the roller can evenly bring out grease, further making the greasing more uniform.

[0028] In order to more clearly understand the present invention, the following will describe the preferred implementation modes of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a reference diagram of the use state of the utility model;

[0030] Figure 2 , Figure 3 It is a structural schematic diagram of the top surface grease coating mechanism in the utility model;

[0031] Figure 4 This is an exploded view of the top surface grease coating assembly in the utility model;

[0032] Figure 5 , Figure 6 It is a structural schematic diagram of the side grease coating mechanism in the utility model;

[0033] Figure 7 This is an exploded view of the side grease coating assembly in the present invention.

[0034] Figure ID:

[0035] 1-frame, 2-conveyor belt assembly, 3-T-type elevator guide rail, 4-top surface grease coating mechanism, 5-side grease coating mechanism; 41-No. 1 gantry, 421-vertical adjustment square rod, 422-first limit sleeve, 423-first limit sleeve rod, 424-first grease box, 425-first roller, 426-first grease injection branch pipe, 427-first adjusting bolt, 428-first spring, 4221-first limit convex ring, 4231-second limit convex ring; 51-No. 2 gantry, 521-lateral adjustment square rod, 522-second limit sleeve, 523-second limit sleeve rod, 524-second grease box, 525-second roller, 526-second grease injection branch pipe, 527-second adjusting bolt, 528-second spring, 5221-third limit convex ring, 5231-fourth limit convex ring. DETAILED DESCRIPTION

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0037] In addition, if there are terms such as "first" and "second", they are only used for descriptive purposes, mainly to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components, and cannot be understood as indicating or implying relative importance.

[0038] In addition, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two components; for ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0039] See also Figure 1-7 The utility model provides a three-sided automatic greasing device for a T-shaped elevator guide rail, comprising a frame 1, a conveyor belt assembly 2 is horizontally arranged on the frame 1 for conveying a T-shaped elevator guide rail 3 to be greased, and a top surface greasing mechanism 4 and a side surface greasing mechanism 5 are successively arranged on the frame 1 along the conveying direction of the T-shaped elevator guide rail 3.

[0040] The top surface grease coating mechanism 4 includes a No. 1 gantry 41 and a top surface grease coating component arranged on the No. 1 gantry 41; the top surface grease coating component includes a vertical adjustment square rod 421, a first limiting sleeve 422, a first limiting sleeve rod 423, a first grease box 424, a first roller 425, a first grease injection branch pipe 426 and a first adjustment bolt 427.

[0041] A vertical adjustment square rod 421 is arranged just above the conveyor belt. The vertical adjustment square rod 421 vertically penetrates the No. 1 assembly square hole on the No. 1 gantry 41. The vertical adjustment square rod 421 is axially fixedly connected to the first end of the first limiting sleeve 422 to form a whole;

[0042] The first limiting sleeve 422 has a first limiting protruding ring 4221 protruding from the inner wall of the tube cavity at the second end thereof;

[0043] The first limiting sleeve rod 423 has a first end slidably sleeved in the first limiting sleeve tube 422, and a second limiting protruding ring 4231 is protrudingly provided on the outer wall of the first end of the first limiting sleeve rod 423; the second limiting protruding ring 4231 cooperates with the first limiting protruding ring 4221 to limit the first limiting sleeve rod 423, so that the first limiting sleeve rod 423 can slide in the first limiting sleeve tube 422 but will not separate from the first limiting sleeve tube 422;

[0044] The second end of the first limiting sleeve rod 423 is fixedly connected to the first grease box 424, and a first spring 428 is sleeved on the first limiting sleeve rod 423. One end of the first spring 428 is connected to the first limiting sleeve 422, and the other end is connected to the first grease box 424.

[0045] The first grease box 424 has a first grease outlet at the bottom thereof for the first roller 425 to be exposed;

[0046] A first roller 425 is rotatably mounted in the first grease box 424. The bottom arc surface of the first roller 425 is exposed from the first grease outlet and close to the top surface of the T-shaped elevator guide rail vertical plate. The width of the first roller 425 is equal to the top surface width of the T-shaped elevator guide rail vertical plate.

[0047] A first grease injection branch pipe 426, one end of which is connected to the first grease box 424 for injecting anti-rust grease into the first grease box 424, and the other end of which is connected to an external grease tank (not shown); a first throttle valve is provided on the first grease injection branch pipe 426 to facilitate controlling the flow rate of the injected anti-rust grease;

[0048] The first adjusting bolt 427 laterally penetrates the No. 1 assembly square hole on the No. 1 gantry 41 and abuts against the vertical adjusting square rod 421. The first adjusting bolt 427 is screwed on the No. 1 gantry 41. By tightening the first adjusting bolt 427, the vertical adjusting square rod 421 can be positioned on the No. 1 gantry 41, so that the gap between the first roller 425 and the top surface of the T-type elevator guide rail vertical plate can be adjusted to enhance the applicability of greasing to different models of elevator guide rails 3.

[0049] The side grease mechanism 5 includes a No. 2 gantry 51 and a pair of side grease components that are relatively independent but symmetrically arranged on the No. 2 gantry 51, and the pair of side grease components are symmetrically arranged on both sides of the vertical plate of the T-shaped elevator guide rail 3; the side grease components include a lateral adjustment square rod 521, a second limiting sleeve 522, a second limiting sleeve rod 523, a second grease box 524, a second roller 525, a second grease injection branch pipe 526 and a second adjustment bolt 527.

[0050] A transverse adjustment square rod 521, which transversely passes through the second assembly square hole on the second gantry 51, and the transverse adjustment square rod 521 is axially fixedly connected with the first end of the second limiting sleeve 522 to form a whole;

[0051] The second limiting sleeve 522 has a third limiting protruding ring 5221 protruding from the inner wall of the tube cavity at the second end thereof;

[0052] The second limiting sleeve rod 523 has a first end slidably sleeved in the second limiting sleeve tube 522, and a fourth limiting protruding ring 5231 is protrudingly provided on the outer wall of the first end of the second limiting sleeve rod 523; the fourth limiting protruding ring 5231 cooperates with the third limiting protruding ring 5221 to limit the second limiting sleeve rod 523, so that the second limiting sleeve rod 523 can slide in the second limiting sleeve tube 522 but will not separate from the second limiting sleeve tube 522;

[0053] The second end of the second limiting sleeve rod 523 is fixedly connected to the second grease box 524 as a whole, and a second spring 528 is sleeved on the second limiting sleeve rod 523. One end of the second spring 528 is connected to the second limiting sleeve 522, and the other end is connected to the second grease box 524.

[0054] The second grease box 524 has a second grease outlet on the side facing the T-shaped elevator guide rail 3 for the second roller 525 to be exposed;

[0055] The second roller 525 is rotatably mounted in the second grease box 524. The arc surface of one side of the second roller 525 is exposed from the second grease outlet and close to the side of the T-shaped elevator guide rail vertical plate. The width of the second roller 525 is equal to the side width of the T-shaped elevator guide rail vertical plate.

[0056] The second grease injection branch pipe 526 has one end connected to the second grease box 524 for injecting anti-rust grease into the second grease box 524, and the other end connected to an external grease tank; a second throttle valve is provided on the second grease injection branch pipe 526 to control the flow rate of the injected anti-rust grease;

[0057] The second adjusting bolt 527 laterally penetrates the No. 2 assembly square hole on the No. 2 gantry 51 and abuts against the transverse adjusting square rod 521. The second adjusting bolt 527 is screwed on the No. 2 gantry 51. By tightening the second adjusting bolt 527, the transverse adjusting square rod 521 can be positioned on the No. 2 gantry 51, so that the gap between the second roller 525 and the side of the T-type elevator guide rail vertical plate can be adjusted to increase the applicability of greasing different types of elevator guide rails 3.

[0058] Furthermore, the grease tank is also connected to a pressure pump (not shown) through a pipeline, and a solenoid valve (not shown) and a pressure gauge (not shown) are also provided on the pipeline between the grease tank and the pressure pump. The pressure pump, the solenoid valve and the pressure gauge are electrically connected to a controller (not shown). The controller controls the opening and closing of the solenoid valve by detecting the value of the pressure gauge, so that the grease in the grease tank can be continuously transported to the first grease box 424 and the second grease box 524. In addition, the first grease injection branch pipe 426 and the second grease injection branch pipe 526 are both provided with throttle valves, which ensures that the roller can evenly bring out grease.

[0059] Preferably, in the present embodiment, a through slot is vertically provided on the cross beam of the second gantry 51, and the second grease injection branch pipe 526 passes through the through slot and is connected to an external grease tank.

[0060] Preferably, in this embodiment, a step matching the vertical plate of the T-shaped elevator guide rail is arranged on the circumferential surface of the second roller 525 .

[0061] This case is a T-type elevator guide rail three-sided automatic grease device, its working principle and process in actual working conditions are as follows:

[0062] 1. The T-shaped elevator guide rail 3 on the conveyor belt moves with the conveyor belt. When the T-shaped elevator guide rail 3 enters the No. 1 gantry 41, the rotating first roller 425 takes out the anti-rust grease in the first grease box 424 and rolls it onto the top surface of the vertical plate of the T-shaped elevator guide rail. In this process, under the action of the first spring 428, the first roller 425 is pressed against the top surface of the T-shaped elevator guide rail 3, so that the grease is applied evenly;

[0063] 2. When the T-shaped elevator guide rail 3 continues to move and enters the second gantry 51, a pair of second rollers 525 are arranged opposite to each other to bring out the anti-rust grease in the second grease box 524 and roll it to the two side surfaces of the T-shaped elevator guide rail vertical plate; since the first roller 425 first applies grease to the top surface of the elevator guide rail vertical plate, a small amount of anti-rust grease on both sides of the top surface of the elevator guide rail vertical plate may overflow from both sides and flow to the side surfaces of the elevator guide rail vertical plate, and the overflowed anti-rust grease will be rolled and applied to the side surfaces of the elevator guide rail vertical plate by the second roller 525, so as to avoid unevenness caused by the overflow of anti-rust grease from the top surface when the three sides of the elevator guide rail vertical plate are greased at the same time. In this process, under the action of the second spring 528, the second roller 525 is close to the side surface of the T-shaped elevator guide rail 3, so that the grease is applied more evenly;

[0064] 3. If the elevator guide rails 3 that need to be greased are of different models, resulting in different widths and heights of the vertical plates of the elevator guide rails 3, the height of the first roller 425 can be adjusted by the first adjusting bolt 427, and the spacing between a pair of second rollers 525 can be adjusted by the second adjusting bolt 527, so that the device is suitable for greasing different models of T-shaped elevator guide rails 3 and has stronger applicability.

[0065] Compared with the prior art, the present invention provides a three-sided automatic greasing device for a T-shaped elevator guide rail. By means of a top greasing mechanism and a side greasing mechanism which are arranged successively, the top surface of the elevator guide rail is greased first and then the sides of the elevator guide rail. The three-sided greasing is automatically completed with high efficiency. The greasing process is sequential and orderly, which can avoid unevenness caused by the overflow of anti-rust grease from the top surface when the three sides of the vertical plate of the elevator guide rail are greased at the same time.

[0066] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A three-side automatic greasing device for a T-shaped elevator guide rail, comprising a frame (1), a conveyor belt assembly (2) being arranged on the frame (1), a top surface greasing mechanism (4) and a side surface greasing mechanism (5) being arranged successively on the frame (1) along the conveying direction of the T-shaped elevator guide rail (3), characterized in that: The top surface grease coating mechanism (4) comprises a No. 1 gantry (41) and a top surface grease coating assembly arranged on the No. 1 gantry (41); the top surface grease coating assembly comprises a vertical adjustment square rod (421), a first limit sleeve (422), a first limit sleeve rod (423), a first grease box (424), a first roller (425), a first grease injection branch pipe (426) and a first adjustment bolt (427); The vertical adjustment square rod (421) vertically penetrates the No. 1 assembly square hole on the No. 1 gantry (41); the vertical adjustment square rod (421), the first limit sleeve (422), the first limit sleeve rod (423) and the first grease box (424) are connected in sequence; the first grease box (424) is provided with a first grease outlet at the bottom; the first roller (425) is rotatably installed in the first grease box (424), and the bottom arc surface of the first roller (425) is exposed from the first grease outlet; the first adjustment bolt (427) laterally penetrates the No. 1 assembly square hole on the No. 1 gantry (41) and abuts against the vertical adjustment square rod (421).

2. The three-side automatic greasing device for T-shaped elevator guide rails according to claim 1, characterized in that: The side grease coating mechanism (5) comprises a second gantry (51) and a pair of side grease coating components symmetrically arranged on the second gantry (51); the side grease coating components comprise a transverse adjustment square rod (521), a second limit sleeve (522), a second limit sleeve rod (523), a second grease box (524), a second roller (525), a second grease injection branch pipe (526) and a second adjustment bolt (527); The transverse adjustment square rod (521) transversely penetrates the No. 2 assembly square hole on the No. 2 gantry (51); the transverse adjustment square rod (521), the second limiting sleeve (522), the second limiting sleeve rod (523) and the second grease box (524) are connected in sequence; the second grease box (524) is provided with a second grease outlet on the side facing the T-shaped elevator guide rail (3); the second roller (525) is rotatably installed in the second grease box (524), and the arc surface of the second roller (525) is exposed from the second grease outlet; the second adjustment bolt (527) laterally penetrates the No. 2 assembly square hole on the No. 2 gantry (51) and abuts against the transverse adjustment square rod (521).

3. The three-side automatic greasing device for T-shaped elevator guide rails according to claim 2 is characterized in that: The vertical adjustment square rod (421) is axially fixedly connected to the first end of the first limiting sleeve (422) to form a whole; the horizontal adjustment square rod (521) is axially fixedly connected to the first end of the second limiting sleeve (522) to form a whole.

4. The three-side automatic greasing device for T-shaped elevator guide rails according to claim 3 is characterized in that: A first limiting convex ring (4221) is protrudingly provided on the inner wall of the tube cavity at the second end of the first limiting sleeve (422); the first end of the first limiting sleeve rod (423) is slidably sleeved in the first limiting sleeve (422), and a second limiting convex ring (4231) is protrudingly provided on the outer wall of the first end of the first limiting sleeve rod (423); the second limiting convex ring (4231) cooperates with the first limiting convex ring (4221).

5. The three-side automatic greasing device for T-shaped elevator guide rails according to claim 4, characterized in that: The second end of the first limiting sleeve rod (423) is fixedly connected to the first grease containing box (424) as a whole, and a first spring (428) is sleeved on the first limiting sleeve rod (423), one end of the first spring (428) is connected to the first limiting sleeve (422), and the other end is connected to the first grease containing box (424).

6. The three-side automatic greasing device for T-shaped elevator guide rails according to claim 5, characterized in that: A third limiting protrusion ring (5221) is protrudingly provided on the inner wall of the tube cavity at the second end of the second limiting sleeve (522); the first end of the second limiting sleeve rod (523) is slidably sleeved in the second limiting sleeve (522), and a fourth limiting protrusion ring (5231) is protrudingly provided on the outer wall of the first end of the second limiting sleeve rod (523); the fourth limiting protrusion ring (5231) cooperates with the third limiting protrusion ring (5221).

7. The three-side automatic greasing device for T-shaped elevator guide rails according to claim 6, characterized in that: The second end of the second limiting sleeve rod (523) is fixedly connected to the second grease containing box (524) as a whole, and a second spring (528) is sleeved on the second limiting sleeve rod (523), one end of the second spring (528) is connected to the second limiting sleeve (522), and the other end is connected to the second grease containing box (524).

8. The three-side automatic greasing device for T-shaped elevator guide rails according to claim 7, characterized in that: One end of the first grease injection branch pipe (426) is connected to the first grease containing box (424), and the other end is connected to the external grease tank, and a first throttle valve is arranged on the first grease injection branch pipe (426); one end of the second grease injection branch pipe (526) is connected to the second grease containing box (524), and the other end is connected to the external grease tank, and a second throttle valve is arranged on the second grease injection branch pipe (526).

9. The three-side automatic greasing device for T-shaped elevator guide rails according to claim 8, characterized in that: The grease tank is also connected to a pressure pump through a pipeline, and a solenoid valve and a pressure gauge are also arranged on the pipeline between the grease tank and the pressure pump. The pressure pump, the solenoid valve and the pressure gauge are electrically connected to a controller.

10. The three-side automatic greasing device for T-shaped elevator guide rails according to claim 9, characterized in that: A through slot is vertically provided on the crossbeam of the second gantry (51), and a second grease injection branch pipe (526) passes through the through slot and is connected to an external grease tank.

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