CN218718555U

CN218718555U - Belt tensioning mechanism for milling machine

Info

Publication number: CN218718555U
Application number: CN202222810769.2U
Authority: CN
Inventors: 孟闯; 夏志军
Original assignee: Xuzhou Bohui Shitong Heavy Industry Machinery Co ltd
Current assignee: Xuzhou Bohui Shitong Heavy Industry Machinery Co ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-03-24
Anticipated expiration: 2032-10-25

Abstract

The utility model discloses a belt tensioning mechanism for a milling machine, which comprises a fixed bracket, a tensioning bracket and a driving cylinder; the fixed support comprises a fixed side plate, a supporting pin shaft arranged at the left end of the fixed side plate and a supporting sleeve arranged at the right end of the fixed side plate; the tensioning bracket comprises a first connecting end and a second connecting end; the first connecting end is rotatably connected with a tensioning belt wheel corresponding to the transmission belt; the second connecting end is rotatably connected with the supporting sleeve; a driving connecting plate is arranged at the lower side of the tensioning bracket; one end of the driving cylinder is hinged with the supporting pin shaft, and the front end of a piston rod of the driving cylinder is hinged with the driving connecting plate. The utility model discloses a belt tightening mechanism installs convenient, easy operation, efficient, can reduce belt tightening mechanism and adjust the degree of difficulty, need not to shut down and can adjust belt tension, has higher security performance and stability can.

Description

Belt tensioning mechanism for milling machine

Technical Field

The utility model relates to a milling machine device especially relates to a belt straining device for milling machine.

Background

In the road construction and maintenance construction process, the milling machine plays an important role, and the construction efficiency can be greatly improved. As shown in fig. 2-3, the milling machine includes a milling machine frame 2, a milling roller is rotatably disposed in a milling chamber of the milling machine frame 2, and one end of the milling roller is in transmission connection with an engine of the milling machine through a belt transmission system 1; the belt transmission system 1 comprises a transmission belt wheel 4 fixedly connected with the milling roller, a driving belt wheel 3 connected with the milling machine engine and a transmission belt 5 connected with the driving belt wheel and the transmission belt wheel, the milling machine engine can transmit power to the milling roller through the transmission belt and drive the milling roller to rotate, the tightness of the transmission belt is critical to power transmission, and the working efficiency of the milling machine is seriously influenced.

Conventional belt tensioning primarily achieves drive belt tension adjustment by adjusting the spacing between drive shafts that mate with a drive pulley or drive pulley. For example, chinese patent CN107606084A discloses a "belt tensioning device for a transmission case of a stone picker", which adjusts the adjusting bolt 6 matched with the driving pulley 2, the adjusting seat 4 matched with the adjusting bolt, and the fixing seat 5, and adjusts the distance between the driving pulley and the driven pulley to tension the belt by the adjusting bolt and the adjusting seat. The application of such belt tensioning structures on milling machines generally has the following disadvantages: (1) Limited by the operation space, the belt tensioning device has large adjustment difficulty coefficient, the tensioning force is not easy to control, and the tightness needs to be adjusted frequently; (2) Due to the severe working environment of the milling machine, an adjusting screw rod of the milling machine is easy to pollute, dirt is easy to cause the locking of the adjusting screw rod and a nut, and the tension degree of a transmission belt cannot be adjusted; (3) Maintenance is tedious, and the adjustment of drive belt tension requires the milling machine to be shut down, and adjustment efficiency is lower.

SUMMERY OF THE UTILITY MODEL

The purpose of the invention is as follows: the utility model aims at providing a straining device of convenient regulation driving belt rate of tension improves belt rate of tension and adjusts efficiency.

The technical scheme is as follows: a belt straining device for milling machine, belt straining device includes:

the fixing support comprises a fixing side plate, a supporting pin shaft arranged at the left end of the fixing side plate and a supporting sleeve arranged at the right end of the fixing side plate;

a tensioning bracket including a first connection end and a second connection end; the first connecting end is rotationally connected with a tensioning belt wheel corresponding to the transmission belt; the second connecting end is rotatably connected with the supporting sleeve; a driving connecting plate is arranged on the lower side of the tensioning bracket;

and one end of the driving cylinder is hinged with the supporting pin shaft, and the front end of a piston rod of the driving cylinder is hinged with the driving connecting plate.

Preferably, the inner side of the fixed side plate is provided with a reinforcing rib plate for connecting the supporting pin shaft and the supporting sleeve.

Preferably, the tensioning support comprises two groups of oppositely arranged supporting side plates and a connecting block for connecting the two groups of supporting side plates; one end of the driving connecting plate is fixedly connected to the lower end of the connecting block.

Preferably, the supporting side plate is provided with a plurality of hollows.

Preferably, the reinforcing rib plate is provided with a plurality of hollows.

Preferably, the driving cylinder is a hydraulic oil cylinder, a driving air cylinder or an electric cylinder.

Preferably, a support bearing is arranged in the support sleeve.

Has the beneficial effects that: compared with the prior art, the utility model has the advantages of as follows: the utility model discloses a belt tightening mechanism installs convenient, easy operation, efficient, can reduce belt tightening mechanism and adjust the degree of difficulty, need not to shut down and can adjust belt tension, has higher security performance and stability can.

Drawings

FIG. 1 is a schematic view of the installation structure of the belt tensioner and belt drive system of the present invention;

fig. 2 is a schematic view of the belt drive system and the milling machine frame of fig. 1;

FIG. 3 is a top view of the structure of FIG. 2;

FIG. 4 is a schematic diagram of the belt tensioning mechanism of FIG. 1;

FIG. 5 is a schematic view of the fixing bracket of FIG. 4;

fig. 6 is a schematic view of the tension bracket of fig. 4.

Reference numerals: 1. a belt drive system; 2. milling and planing a rack; 3. A drive pulley; 4. a drive pulley; 5. a drive belt; 6. a belt tensioning mechanism; 7. fixing a bracket; 71. fixing the side plate; 72. supporting the pin shaft; 73. a support sleeve; 74. a reinforcing rib plate; 8. tensioning the bracket; 81. connecting blocks; 82. supporting the side plates; 83. a drive connection plate; 84. a first connection end; 85. a second connection end; 86. a hinge pivot; 9. tensioning the belt pulley; 10. a drive cylinder; 11. a cylinder body ear block; 12. a piston rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 6 of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived from the description of the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.

As shown in fig. 1 to 3, the milling machine includes a milling machine frame 2, a milling roller is rotatably disposed in a milling chamber of the milling machine frame 2, and one end of the milling roller is in transmission connection with an engine of the milling machine through a belt transmission system 1. The belt drive system 1 comprises a drive pulley 4 fixedly connected to the milling roller, a drive pulley 3 connected to the engine of the milling machine, and a drive belt 5 connecting the drive pulley and the drive pulley. Milling planer frame 2 one side fixedly connected with belt straining device 6, the degree of tension of belt straining device 6 regulation driving belt 5 on driving pulley and driving pulley that can be convenient.

As shown in fig. 5, the belt tensioning mechanism 6 of the present invention includes a fixing bracket 7, a tensioning bracket 8, and a driving cylinder 10; the fixed bracket 7 comprises a fixed side plate 71, a supporting pin shaft 72 arranged at the left end of the fixed side plate and a supporting sleeve 73 arranged at the right end of the fixed side plate, and a reinforcing rib plate 74 for connecting the supporting pin shaft 72 and the supporting sleeve 73 is arranged at the inner side of the fixed side plate 71; the fixed side plate 71 is provided with a connecting hole and is fixedly connected with the milling machine frame 2 through a screw; and a support bearing is arranged in the support sleeve 73, so that the rotation friction resistance of the tensioning support and the fixed support is reduced. The fixing support 7 with the structure has high structural strength, light weight and less material consumption.

As shown in fig. 6, the tension bracket 8 includes two sets of support side plates 82 disposed opposite to each other and a connecting block 81 connecting the two sets of support side plates. The right ends of the two groups of supporting side plates 82 form a first connecting end 84, a tensioning belt wheel 9 is rotatably arranged between the supporting side plates of the first connecting end, and the transmission belt is correspondingly clamped in a belt groove of the tensioning belt wheel 9, so that the transmission belt is supported. The left ends of the two groups of supporting side plates 82 form a second connecting end 85, the supporting side plates of the second connecting end are correspondingly clamped at the two ends of the supporting sleeve and are connected through a connecting pivot, and the tensioning bracket 8 automatically rotates along the axis of the supporting sleeve of the fixed bracket through the second connecting end. The lower end of the connecting block 81 is fixedly connected with one end of the driving connecting plate 83, and one side of the other end of the driving connecting plate 83 is provided with a hinge pivot 86.

Referring to fig. 4, a cylinder body lug 11 is disposed at the bottom end of the driving cylinder 10, the driving cylinder 10 is hinged to the supporting pin 72 via the cylinder body lug, and the front end of the piston rod 12 of the driving cylinder is hinged to the hinge pivot 86 of the driving connecting plate. The actuating cylinder 10 is hydraulic cylinder, drives actuating cylinder or electric jar, and actuating cylinder 10 drives tensioning support 8 through the concertina movement drive piston rod and rotates along the support sleeve axis to drive tensioning band pulley 9 and realize the tensioning or loosen transmission belt, convenient realization transmission belt's change improves transmission belt's transmission efficiency.

Referring to fig. 6, a plurality of sets of hollows are formed on the supporting side plate 82 and the reinforcing rib 74, and the hollow shapes can be circular or square, so that the weights of the fixing bracket and the tensioning bracket can be reduced.

The utility model discloses a theory of operation or working method:

firstly, the driving connection between a milling roller of the milling machine and an engine of the milling machine is realized through a belt driving system 1; secondly, completing the installation and connection of the fixed support 7 and the tensioning support 8, and completing the installation of the tensioning belt wheel 9 and the tensioning support 8; thirdly, the belt tensioning mechanism is fixedly connected with the milling machine frame 2 through a fixed side plate, and the tensioning belt wheel 9 and the transmission belt 5 are clamped; finally, the driving cylinder 10 is controlled to drive the tensioning bracket to rotate along the axis of the supporting sleeve of the fixed bracket, so that the tension of the transmission belt 5 can be conveniently adjusted by adjusting the tensioning belt wheel 9.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A belt tensioning mechanism for a milling machine, characterized in that the belt tensioning mechanism (6) comprises:

the fixing support (7) comprises a fixing side plate (71), a supporting pin shaft (72) arranged at the left end of the fixing side plate and a supporting sleeve (73) arranged at the right end of the fixing side plate;

a tensioning bracket (8), the tensioning bracket (8) comprising a first connection end (84) and a second connection end (85); the first connecting end (84) is rotatably connected with a tensioning belt wheel (9) corresponding to the transmission belt (5); the second connecting end (85) is rotatably connected with the supporting sleeve (73); a driving connecting plate (83) is arranged on the lower side of the tensioning bracket (8);

one end of the driving cylinder (10) is hinged with the supporting pin shaft (72), and the front end of a piston rod (12) of the driving cylinder is hinged with the driving connecting plate (83).

2. The belt tensioning mechanism for a milling machine according to claim 1, characterized in that the inside of the fixed side plate (71) is provided with a reinforcing rib (74) connecting the support pin (72) with the support sleeve (73).

3. The belt tensioning mechanism for a milling machine according to claim 1, characterized in that the tensioning bracket (8) comprises two sets of oppositely arranged supporting side plates (82) and a connecting block (81) connecting the two sets of supporting side plates; one end of the driving connecting plate (83) is fixedly connected to the lower end of the connecting block (81).

4. The belt tensioning mechanism for the milling machine as recited in claim 3, characterized in that the support side plate (82) has a plurality of cutouts formed therein.

5. The belt tensioning mechanism for the milling machine as recited in claim 2, characterized in that the reinforcing ribs (74) have a plurality of openings.

6. The belt tensioning mechanism for a milling machine according to claim 1, characterized in that the drive cylinder (10) is a hydraulic cylinder, a drive cylinder or an electric cylinder.

7. The belt tensioning mechanism for a milling machine of claim 1, characterized in that a support bearing is provided in the support sleeve (73).