Chassis guide wheel blocking and protecting device

Abstract

The utility model is applicable to the technical field of excavating machinery, and discloses a chassis guide wheel retaining and protecting device which is characterized in that mounting plates are fixedly mounted on the surfaces of the two ends of the outer side of a mounting frame, a guide rod is fixedly mounted between the side edges of the two mounting plates, and sliding sleeves are slidably sleeved on the surfaces of the two ends of the outer side of the guide rod; a connecting frame is fixedly installed on the outer side surface of each sliding sleeve, a pushing rod is obliquely hinged to the surface of the end, away from the sliding sleeve, of each connecting frame through a rotating shaft, and transmission arc plates are hinged to the ends, away from the sliding sleeves, of the two pushing rods through rotating shafts; the outer side of the buffer spring is movably attached to the outer side of the sliding sleeve. According to the technical scheme, external impact force can be converted into extrusion acting force on the buffer spring, so that the buffer spring can buffer the external impact force, and the impact force is prevented from directly acting on the surfaces of the mounting frame and the guide wheel body to affect normal movement and use of the guide wheel body.

Description

Technical Field

[0001] The utility model is applicable to the technical field of excavating machinery, and particularly relates to a chassis guide wheel guard device. Background Art

[0002] At present, the traveling device of an excavator is generally composed of a driving wheel, a supporting wheel, a drag chain wheel, a guide wheel and a crawler track. The guide wheel is placed in the guide wheel rail of the frame and is connected to the crawler track and the tensioning device at the front and rear respectively. The tensioning device pushes the guide wheel to keep the crawler track in a tensioned state, thereby realizing the transmission of the traveling driving force.

[0003] However, the guide wheels of excavators currently used do not have corresponding protective mechanisms on the outside when in use, which results in the mud splashed from the outside constantly impacting and contacting the guide wheel surface from the front side during driving, thereby hindering the movement of the guide wheel and affecting the movement stability of the excavator. Therefore, we propose a chassis guide wheel guard device. Utility Model Content

[0004] The main purpose of the utility model is to provide a chassis guide wheel guard device, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A chassis guide wheel guard device comprises a mounting frame, a connecting rod is rotatably mounted on the middle end of the mounting frame through a bearing, and a guide wheel body is fixedly sleeved on the outer surface of the middle end of the connecting rod;

[0007] The outer surfaces of both ends of the mounting frame are fixedly mounted with mounting plates, and guide rods are fixedly mounted between the sides of the two groups of mounting plates. The outer surfaces of both ends of the guide rods are slidably sleeved with sliding sleeves, and the outer surface of each sliding sleeve is fixedly mounted with a connecting frame, and the end surface of each connecting frame away from the sliding sleeve is hinged with a push rod through a rotating shaft, and the ends of the two groups of push rods away from the sliding sleeve are hinged with a transmission arc plate through a rotating shaft, and the transmission arc plate is located outside the mounting frame;

[0008] A buffer spring is movably sleeved on the outer side of the middle end of the guide rod, and the outer side of the buffer spring is movably fitted to the outer side of the sliding sleeve.

[0009] By adopting the above technical solution, the external impact force can be converted into an extrusion force on the buffer spring through the transmission conversion action of the push rod, so that the buffer spring can buffer the external impact force and avoid the impact force directly acting on the surface of the mounting frame and the guide wheel body to affect their normal movement and use.

[0010] As an optional scheme of the technical scheme of the present application, rotating rods are rotatably installed on the outer side surfaces of both ends of the mounting frame through bearings, a fixed sleeve is fixedly installed on the end surface of each rotating rod away from the mounting frame, a hollow tube is fixedly inserted into the inner side of each fixed sleeve, a movable rod is vertically penetrated and slidably inserted into the top of each hollow tube, a protective baffle is hinged on the side of the top of the mounting frame through a rotating shaft, and the top of the movable rod is slidably connected to the outer side of the protective baffle, and a piston plate is fixedly installed on the end surface of each movable rod away from the transmission arc plate, and the piston plate is slidably installed inside the hollow tube.

[0011] By adopting the above technical solution, the guide wheel body can be protected from the top of the installation frame through the structural function of the protective baffle and the piston plate.

[0012] As an optional solution of the technical solution of the present application, a sliding groove is opened at the middle end of the top of each hollow tube, and the movable rod passes through and is slidably inserted into the sliding groove.

[0013] By adopting the above technical solution, the moving stability of the movable rod is ensured by the guiding sliding action of the sliding groove on the movable rod.

[0014] As an optional solution of the technical solution of the present application, a buffer pad is fixedly bonded to the outer surface of the transmission arc plate.

[0015] By adopting the above technical solution, the protective effect on the surface of the transmission arc plate is improved through the structural effect of the buffer cushion.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. A chassis guide wheel guard device of the technical solution of the present application, wherein the two ends of a push rod are respectively connected to a transmission arc plate and an outer side of a sliding sleeve through a rotating shaft, so that when the guide wheel body moves, after the external splashing mud impacts and contacts the surface of the transmission arc plate and causes it to move horizontally toward the mounting frame, the push rod can convert the horizontal driving force borne on the surface of the transmission arc plate into a horizontal driving force on the sliding sleeve, so that the sliding sleeve can move toward each other on the outside of the guide rod, and then convert the external impact force into an extrusion force on a buffer spring, so that the buffer spring can buffer the external impact force, thereby preventing the impact force from directly acting on the surface of the mounting frame and the guide wheel body and affecting their normal movement and use.

[0018] 2. A chassis guide wheel guard device according to the technical solution of the present application is connected by a movable rod to drive a protective baffle and a piston plate inside a hollow tube, so that when external splashing mud impacts the surface of the protective baffle and causes it to rotate relatively, the movable rod can drive the piston plate to move synchronously inside the hollow tube while buffering and blocking the protective baffle, preventing external impact force from directly acting on the guide wheel body and affecting its normal movement and use, thereby further increasing the protection area of ​​the guide wheel body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a chassis guide wheel guard device of the utility model;

[0020] Figure 2 It is a schematic diagram of a cross-sectional structure of a mounting frame of a chassis guide wheel guard device of the utility model from a top view;

[0021] Figure 3 The utility model is a schematic diagram of a front cross-sectional structure of a hollow tube of a chassis guide wheel guard device.

[0022] Figure numerals: 1. mounting frame; 11. connecting rod; 12. guide wheel body; 2. mounting plate; 21. guide rod; 22. sliding sleeve; 23. buffer spring; 24. connecting frame; 25. push rod; 26. transmission arc plate; 27. buffer cushion; 3. rotating rod; 31. fixed sleeve; 32. hollow tube; 33. sliding groove; 34. movable rod; 35. piston plate; 36. protective baffle. DETAILED DESCRIPTION

[0023] like Figure 1-3 As shown, the utility model provides a technical solution: a chassis guide wheel guard device, a connecting rod 11 is rotatably installed at the middle end of the installation frame 1 through a bearing, and a guide wheel body 12 is fixedly sleeved on the outer surface of the middle end of the connecting rod 11.

[0024] In this technical solution (through Figure 1 , Figure 2 and Figure 3As shown), mounting plates 2 are fixedly installed on the outer side surfaces of the mounting frame 1 at both ends, guide rods 21 are fixedly installed between the sides of the two groups of mounting plates 2, sliding sleeves 22 are slidably sleeved on the outer side surfaces of the guide rods 21, and a connecting frame 24 is fixedly installed on the outer side surface of each sliding sleeve 22, and a push rod 25 is hingedly connected to the end surface of each connecting frame 24 away from the sliding sleeve 22 through a rotating shaft, and a transmission arc plate 26 is hinged at one end of the two groups of push rods 25 away from the sliding sleeve 22 through a rotating shaft, and the transmission arc plate 26 is located on the outer side of the mounting frame 1, and a buffer pad 27 is fixedly bonded to the outer side surface of the transmission arc plate 26, and a buffer spring 23 is movably sleeved on the outer side of the middle end of the guide rod 21, and the outer side of the buffer spring 23 is movably fitted to the outer side of the sliding sleeve 22.

[0025] In this technical solution (through Figure 1 , Figure 2 and Figure 3 As shown), rotating rods 3 are rotatably mounted on both end surfaces of the outer side of the mounting frame 1 through bearings, a fixed sleeve 31 is fixedly mounted on the end surface of each rotating rod 3 away from the mounting frame 1, and a hollow tube 32 is fixedly inserted into the inner side of each fixed sleeve 31.

[0026] In this technical solution (through Figure 1 , Figure 2 and Figure 3 As shown in the figure, a movable rod 34 is vertically penetrated and slidably inserted into the top of each hollow tube 32, a protective baffle 36 is hinged on the top side of the mounting frame 1 through a rotating shaft, and the top of the movable rod 34 is slidably connected to the outer side of the protective baffle 36, and a piston plate 35 is fixedly installed on the surface of one end of each movable rod 34 away from the transmission arc plate 26, and the piston plate 35 is slidably installed inside the hollow tube 32.

[0027] In some technical solutions (through Figure 1 , Figure 2 and Figure 3 As shown in FIG. 1 , a sliding groove 33 is formed at the middle end of the top of each hollow tube 32 , and a movable rod 34 penetrates and is slidably inserted into the sliding groove 33 .

[0028] During operation, after the mounting frame 1 and the guide wheel body 12 are installed under the corresponding excavator, when the guide wheel body 12 rotates to guide the excavator, the soil splashed up as the excavator moves impacts and contacts the surfaces of the transmission arc plate 26 and the protective baffle 36, and then drives the transmission arc plate 26 and the protective baffle 36 to move synchronously. Under the transmission conversion action of the push rod 25, the horizontal driving force borne on the surface of the transmission arc plate 26 can be converted into a horizontal driving force on the sliding sleeve 22, so that the sliding sleeve 22 can move toward each other on the outside of the guide rod 21, and then the external impact force is converted into an extrusion force on the buffer spring 23, so that the buffer spring 23 can buffer the external impact force, and after synchronously driving the movable rod 34 and the piston plate 35 to move synchronously inside the hollow tube 32, the impact force borne on the surfaces of the transmission arc plate 26 and the protective baffle 36 can be buffered and protected, so as to avoid the impact force directly acting on the surface of the guide wheel body 12 and damaging it, thereby realizing the movement protection treatment of the guide wheel body 12.

Claims

1. A chassis guide wheel guard device, comprising a mounting frame (1), characterized in that: A connecting rod (11) is rotatably mounted on the middle end of the installation frame (1) via a bearing, and a guide wheel body (12) is fixedly sleeved on the outer surface of the middle end of the connecting rod (11); The outer end surfaces of the installation frame (1) are fixedly mounted with installation plates (2), and guide rods (21) are fixedly mounted between the sides of the two groups of the installation plates (2). The outer end surfaces of the guide rods (21) are slidably sleeved with sliding sleeves (22), and the outer surface of each sliding sleeve (22) is fixedly mounted with a connecting frame (24), and the end surface of each connecting frame (24) away from the sliding sleeve (22) is hingedly connected to a push rod (25) via a rotating shaft, and the ends of the two groups of push rods (25) away from the sliding sleeve (22) are hingedly connected to a transmission arc plate (26) via a rotating shaft, and the transmission arc plate (26) is located outside the installation frame (1); A buffer spring (23) is movably sleeved on the outer side of the middle end of the guide rod (21), and the outer side of the buffer spring (23) is movably fitted to the outer side of the sliding sleeve (22).

2. The chassis guide wheel guard device according to claim 1, characterized in that: Rotating rods (3) are rotatably mounted on both end surfaces of the outer side of the installation frame (1) via bearings, a fixed sleeve (31) is fixedly mounted on the end surface of each rotating rod (3) away from the installation frame (1), and a hollow tube (32) is fixedly inserted into the inner side of each fixed sleeve (31).

3. The chassis guide wheel guard device according to claim 2, characterized in that: A movable rod (34) is vertically penetrated and slidably inserted into the top of each hollow tube (32); a protective baffle (36) is hingedly connected to the top side of the installation frame (1) via a rotating shaft; and the top of the movable rod (34) and the outer side of the protective baffle (36) are slidably connected.

4. The chassis guide wheel guard device according to claim 2, characterized in that: A sliding groove (33) is provided at the middle end of the top of each hollow tube (32), and a movable rod (34) penetrates and is slidably inserted into the sliding groove (33).

5. The chassis guide wheel guard device according to claim 1, characterized in that: A buffer cushion (27) is fixedly bonded to the outer surface of the transmission arc plate (26).

6. The chassis guide wheel guard device according to claim 3, characterized in that: A piston plate (35) is fixedly mounted on the surface of one end of each movable rod (34) away from the transmission arc plate (26), and the piston plate (35) is slidably mounted inside the hollow tube (32).

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