Frame structure of miniature excavator

Abstract

The utility model provides a miniature excavator frame structure, which relates to the technical field of excavator frames and comprises a lower frame, protecting devices and fixing devices, the surface of the lower frame is fixedly connected with a mounting seat, the protecting devices are mounted on two sides of the surface of the lower frame by the aid of the fixing devices, and the fixing devices are fixedly connected with the mounting seat. The protection device comprises two mounting plates, the two mounting plates are fixedly mounted on the two sides of the surface of the lower vehicle frame through fixing devices correspondingly, the surfaces of the two mounting plates are rotationally connected with rotating shafts correspondingly, the surfaces of the rotating shafts are fixedly connected with protection plates, the surfaces of one sides of the two mounting plates are fixedly connected with fixing rods correspondingly, and the fixing rods are fixedly connected with the surfaces of the other sides of the two mounting plates correspondingly. When the miniature excavator is used, parts on the two sides of the lower frame can be better protected and are not prone to being damaged due to the fact that the parts make contact with objects and collide with the objects, normal use of the lower frame is guaranteed, the service life of the lower frame is prolonged, and the service life of the lower frame is prolonged. And the use effect and the working efficiency of the lower frame are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of excavator frames, in particular to a mini excavator frame structure. Background Art

[0002] The excavator frame is the main part of the excavator, which is mainly used for the connection and combination of various parts of the excavator. The excavator frame is roughly divided into two parts: the upper frame and the lower frame. The lower frame is the walking part of the excavator and occupies a very important position in the whole machine.

[0003] When the traditional underframe is in use, various components such as tracks are installed on both sides. The main function is to adjust the movement direction of the excavator to facilitate normal construction operations. However, it is found in actual use that in order to improve work efficiency and protect the safety of the underframe, a bulldozer is installed in front of the underframe to clear obstacles in front. However, the cleared obstacles will be pushed to the underframe track position on both sides, resulting in contact and collision, causing damage to components, which also has a certain impact on the normal movement of the excavator and reduces the working efficiency of the excavator. Utility Model Content

[0004] The utility model is to solve the problem that in order to improve the working efficiency of the entire excavator and protect the safety of the lower frame, a bulldozer is installed in front of the lower frame to clear the obstacles in front, but the obstacles after clearing will be pushed to the crawler positions of the lower frame on both sides, and then contact and collision will occur, resulting in damage to components, and also having a certain impact on the normal action of the excavator, thereby reducing the working efficiency of the excavator. A mini excavator frame structure is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a mini excavator frame structure, including a lower frame, a protecting device and a fixing device, the surface of the lower frame is fixedly connected with a mounting seat, the protecting device is installed on both sides of the surface of the lower frame by means of the fixing device, the protecting device includes two mounting plates, the two mounting plates are respectively fixedly installed on both sides of the surface of the lower frame by means of the fixing device, the surfaces of the two mounting plates are respectively rotatably connected with rotating shafts, the surfaces of the rotating shafts are fixedly connected with protective plates, one side surfaces of the two mounting plates are respectively fixedly connected with fixing rods, one side surface of the protective plate is fixedly connected with a fixing frame, the fixing rod is clamped with the inner wall of the fixing frame, the surface of the fixing rod is threadedly connected with bolts, and the bolts are threadedly connected to the inner wall of the fixing frame.

[0006] The effect achieved by the above components is: when the mini excavator is in use, the components on both sides of the lower frame can be better protected, and are not easily damaged by contact and collision with objects, thereby ensuring the normal use of the lower frame, extending the service life of the lower frame, and improving the use effect and work efficiency of the lower frame.

[0007] Preferably, an operating block is fixedly connected to the surface of the bolt, and a plurality of protective protrusions are provided on the surface of the operating block.

[0008] The effect achieved by the above components is that through the setting of the operating block, the bolts can be better pre-fixed with the inner wall of the installation frame when in use, thereby improving the convenience of using the protective device.

[0009] Preferably, a washer is sleeved on the arc surface of the bolt, and the washer is a metal ring.

[0010] The effects achieved by the above components are: through the arrangement of the washers, the bolts are more firmly mounted on the mounting frame, and the bolts are more closely fitted to the surface of the mounting rod, making them less likely to loosen.

[0011] Preferably, a protective pad is fixedly connected to the surface of the protective plate, and the protective pad is a rubber pad.

[0012] The effect achieved by the above components is: by adding the protective pad, the protective plate is not easily damaged when it collides with an object, thereby ensuring the normal use of the protective plate and further extending the service life of the protective plate.

[0013] Preferably, torsion springs are respectively sleeved on the arc surface of the rotating shaft on both sides of the mounting plate, and two ends of the torsion spring are respectively fixedly connected to the rotating shaft and the mounting plate.

[0014] The effect achieved by the above components is that through the setting of the torsion spring, when the protective plate is installed and fixed, the fixing frame and the fixing rod can be quickly connected under the torsion force of the torsion spring, thereby improving the convenience of installing the protective device.

[0015] Preferably, the fixing device includes two mounting frames, the two mounting frames are respectively fixedly connected to the two sides of the surface of the lower frame, the two mounting plates are respectively plugged into the inner walls of the two fixing frames, screw holes are respectively opened on the two sides of the surfaces of the two mounting frames, the inner walls of the screw holes are threadedly connected with screws, and the screws are inserted through the surfaces of the mounting plates.

[0016] The effect achieved by the above components is that the use of the protective device can be more convenient and quick, so that the side parts of the lower frame can be more conveniently protected, the convenience of using the protective device is improved, and the inspection and maintenance of the protective device is also facilitated.

[0017] Preferably, a nut is threadedly connected on the arc surface of the screw rod, and the nut abuts against the surface of the mounting frame.

[0018] The effect achieved by the above components is that the screw rod is more firmly mounted on the mounting frame through the setting of the nut, and is not easy to rotate and loosen during the use of the lower frame, thereby improving the assembly effect of the fixing device.

[0019] Preferably, both sides of the surfaces of the two installation frames are respectively provided with card slots, inner walls of the card slots are card-engaged with card blocks, and the card blocks are fixedly connected to the surface of the installation plate.

[0020] The effect achieved by the above components is: through the clamping arrangement of the clamping block and the clamping slot, the assembly of the mounting plate is made more stable and firm, thereby making the clamping device more stable when in use.

[0021] In summary, the beneficial effects of the utility model are:

[0022] When the mini excavator is in use, the components on both sides of the lower frame can be better protected, and are not easily damaged by contact and collision with objects, thereby ensuring the normal use of the lower frame, extending the service life of the lower frame, and improving the use effect and work efficiency of the lower frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 It is a three-dimensional structural schematic diagram of the protection device of the utility model;

[0025] Figure 3 For this utility model Figure 2 A schematic diagram of the side three-dimensional structure;

[0026] Figure 4 It is a three-dimensional structural schematic diagram of the fixing device of the utility model.

[0027] Legend: 1. Lower frame; 2. Mounting seat; 3. Protective device; 31. Mounting plate; 32. Rotating shaft; 33. Protective plate; 34. Fixing rod; 35. Fixing frame; 36. Bolt; 37. Operating block; 38. Washer; 39. Torsion spring; 310. Protective pad; 4. Fixing device; 41. Mounting frame; 42. Screw hole; 43. Screw rod; 44. Nut; 45. Slot; 46. Block. DETAILED DESCRIPTION

[0028] Reference Figure 1 As shown, this embodiment discloses a micro excavator frame structure, including a lower frame 1, a protecting device 3 and a fixing device 4. The surface of the lower frame 1 is fixedly connected with a mounting seat 2, and the protecting device 3 is installed on both sides of the surface of the lower frame 1 by means of the fixing device 4.

[0029] Reference Figure 1 and Figure 2 as well as Figure 3 As shown, the present embodiment discloses that the protection device 3 includes two mounting plates 31, and the two mounting plates 31 are fixedly mounted on both sides of the surface of the lower frame 1 by means of the fixing device 4, and the surfaces of the two mounting plates 31 are rotatably connected with the rotating shafts 32, and the surfaces of the rotating shafts 32 are fixedly connected with the protective plates 33, and the surfaces of the two mounting plates 31 are fixedly connected with the fixing rods 34 on one side, and the surfaces of the protective plates 33 are fixedly connected with the fixing frames 35 on one side, and the fixing rods 34 are clamped with the inner wall of the fixing frames 35, and the surfaces of the fixing rods 34 are threadedly connected with the bolts 36, and the bolts 36 are threadedly connected with the inner wall of the fixing frames 35. When the excavator is in use, first The protective plate 33 is rotated to make the rotating shaft 32 fixedly connected to the protective plate 33 rotate on the mounting plate 31 until the fixing frame 35 fixedly connected to the protective plate 33 is engaged with the mounting rod on the mounting plate 31, and then the bolt 36 is threadedly connected to the mounting rod and penetrates through it until the bolt 36 is threadedly connected to the inner wall of the mounting frame 41 to fix the position of the protective plate 33. Then, when the mini excavator is in use, the components on both sides of the lower frame 1 can be better protected, and it is not easy to be damaged by contact and collision with objects, thereby ensuring the normal use of the lower frame 1, extending the service life of the lower frame 1, and improving the use effect and work efficiency of the lower frame 1.

[0030] Reference Figure 1 and Figure 2 as well as Figure 3 As shown, this embodiment discloses that an operating block 37 is fixedly connected to the surface of the bolt 36, and a plurality of protective protrusions are provided on the surface of the operating block 37. Through the provision of the operating block 37, the bolt 36 can be better pre-fixed with the inner wall of the mounting frame 41 when in use, thereby improving the convenience of using the protective device 3. A washer 38 is sleeved on the arc surface of the bolt 36, and the washer 38 is a metal ring. Through the provision of the washer 38, the bolt 36 is more firmly installed on the mounting frame 41, and the bolt 36 is more closely fitted to the surface of the mounting rod, and is not easy to loosen.

[0031] Reference Figure 1 and Figure 2 as well as Figure 3 As shown, this embodiment discloses that a protective pad 310 is fixedly connected to the surface of the protective plate 33, and the protective pad 310 is a rubber pad. Through the provision of the protective pad 310, the protective plate 33 is not easily damaged when colliding with an object, thereby ensuring the normal use of the protective plate 33 and further extending the service life of the protective plate 33. Torsion springs 39 are respectively sleeved on both sides of the arc surface of the rotating shaft 32 and the mounting plate 31. The two ends of the torsion spring 39 are respectively fixedly connected to the rotating shaft 32 and the mounting plate 31. Through the provision of the torsion spring 39, when the protective plate 33 is installed and fixed, the fixing frame 35 and the fixing rod 34 can be quickly clamped under the action of the torsion force of the torsion spring 39, thereby improving the convenience of installation of the protection device 3.

[0032] Reference Figure 1 and Figure 4 As shown, this embodiment discloses that the fixing device 4 includes two mounting frames 41, and the two mounting frames 41 are respectively fixedly connected to the two sides of the surface of the lower frame 1, and the two mounting plates 31 are respectively plugged into the inner walls of the two fixing frames 35. Screw holes 42 are respectively opened on the two sides of the surface of the two mounting frames 41, and the inner walls of the screw holes 42 are threadedly connected with screw rods 43, and the screw rods 43 are inserted through the surface of the mounting plates 31. When the fixing device 4 is used to install the protective device 3, the mounting plate 31 is first inserted into the inner wall of the mounting frame 41 on the surface of the lower frame 1, and then the screw rods 43 are threadedly connected to the screw holes 42 on the surface of the mounting frame 41, and the screw rods 43 are inserted through the surface of the mounting plates 31. At this time, the position of the mounting plates 31 is stable. At this time, when the protective device 3 is used, it can be more convenient and quick, so that the side parts of the lower frame 1 can be more conveniently protected, the convenience of using the protective device 3 is improved, and the protective device 3 is also convenient for inspection and maintenance.

[0033] Reference Figure 1 and Figure 4 As shown, this embodiment discloses that a nut 44 is threadedly connected on the arc surface of the screw rod 43, and the nut 44 abuts against the surface of the mounting frame 41. Through the setting of the nut 44, the screw rod 43 is more firmly mounted on the mounting frame 41, and is not easy to rotate and loosen during the use of the lower frame 1, thereby improving the assembly effect of the fixing device 4. Slots 45 are respectively provided on both sides of the surfaces of the two mounting frames 41, and a block 46 is clamped on the inner wall of the slot 45. The block 46 is fixedly connected to the surface of the mounting plate 31. Through the clamping setting of the block 46 and the slot 45, the assembly of the mounting plate 31 is more stable and firm, thereby making the protecting device 3 more stable when in use.

[0034] Working principle: When the excavator is in use, first rotate the protective plate 33 to make the rotating shaft 32 fixedly connected to the protective plate 33 rotate on the mounting plate 31 until the fixed frame 35 fixedly connected to the protective plate 33 is engaged with the mounting rod on the mounting plate 31, and then put the washer 38 on the bolt 36, and then rotate the operating block 37 fixedly connected to the bolt 36, thread the bolt 36 on the mounting rod and penetrate it until the bolt 36 is threadedly connected to the inner wall of the mounting frame 41, so that the position of the protective plate 33 is fixed. Then, when the mini excavator is in use, the components on both sides of the lower frame 1 can be better protected, and it is not easy to contact and collide with objects to cause damage, thereby ensuring the normal use of the lower frame 1, extending the service life of the lower frame 1, and improving the use effect and work efficiency of the lower frame 1.

[0035] When the fixing device 4 is used to install the protecting device 3, first, the mounting plate 31 is inserted into the inner wall of the mounting frame 41 on the surface of the lower frame 1, so that the block 46 on the mounting plate 31 is engaged with the slot 45 on the surface of the mounting frame 41, and then the screw 43 is threadedly connected to the screw hole 42 on the surface of the mounting frame 41, and the screw 43 is inserted through the surface of the mounting plate 31, and then the nut 44 is threadedly connected to the screw 43. At this time, the position of the mounting plate 31 is stable. At this time, the use of the protecting device 3 can be more convenient and quick, so that the side parts of the lower frame 1 can be more conveniently protected, which improves the convenience of using the protecting device 3 and facilitates the inspection and maintenance of the protecting device 3.

Claims

1. A mini excavator frame structure, comprising a lower frame (1), a protecting device (3) and a fixing device (4), characterized in that: The surface of the lower frame (1) is fixedly connected with a mounting seat (2); the protective device (3) is mounted on both sides of the surface of the lower frame (1) by means of a fixing device (4); the protective device (3) comprises two mounting plates (31); the two mounting plates (31) are respectively fixedly mounted on both sides of the surface of the lower frame (1) by means of a fixing device (4); the surfaces of the two mounting plates (31) are respectively rotatably connected with a rotating shaft (32); the surface of the rotating shaft (32) is fixedly connected with a protective plate (33); one side surface of the two mounting plates (31) is respectively fixedly connected with a fixing rod (34); one side surface of the protective plate (33) is fixedly connected with a fixing frame (35); the fixing rod (34) is clamped with the inner wall of the fixing frame (35); a bolt (36) is threadedly connected through the surface of the fixing rod (34); the bolt (36) is threadedly connected with the inner wall of the fixing frame (35).

2. A mini excavator frame structure according to claim 1, characterized in that: An operating block (37) is fixedly connected to the surface of the bolt (36), and a plurality of protective protrusions are provided on the surface of the operating block (37).

3. The mini excavator frame structure according to claim 1, characterized in that: A washer (38) is sleeved on the arc surface of the bolt (36), and the washer (38) is a metal ring.

4. The mini excavator frame structure according to claim 1, characterized in that: A protection pad (310) is fixedly connected to the surface of the protection plate (33), and the protection pad (310) is a rubber pad.

5. The mini excavator frame structure according to claim 1, characterized in that: Torsion springs (39) are respectively sleeved on the arc surface of the rotating shaft (32) and located on both sides of the mounting plate (31), and the two ends of the torsion spring (39) are respectively fixedly connected to the rotating shaft (32) and the mounting plate (31).

6. The mini excavator frame structure according to claim 1, characterized in that: The fixing device (4) comprises two mounting frames (41), the two mounting frames (41) are respectively fixedly connected to the two sides of the surface of the lower frame (1), the two mounting plates (31) are respectively plugged into the inner walls of the two fixing frames (35), the two sides of the surface of the two mounting frames (41) are respectively provided with screw holes (42), the inner walls of the screw holes (42) are threadedly connected with screw rods (43), and the screw rods (43) are inserted through the surface of the mounting plates (31).

7. A mini excavator frame structure according to claim 6, characterized in that: A nut (44) is threadedly connected on the arc surface of the screw rod (43), and the nut (44) abuts against the surface of the installation frame (41).

8. The mini excavator frame structure according to claim 7, characterized in that: The surfaces of the two installation frames (41) are respectively provided with card slots (45), the inner walls of the card slots (45) are card-engaged with card blocks (46), and the card blocks (46) are fixedly connected to the surface of the installation plate (31).

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