Snow removal implement quick switching device

Abstract

The application discloses a snow removing accessory quick switching device, and relates to the field of snow removing machines. The device comprises an accessory connecting frame, a chassis connecting frame, a hinged connecting frame, a rotary limiting plate, a limiting pressing plate, a hinged structure, a support arm assembly, a lifting oil cylinder and a swing oil cylinder. The rotary shaft of the hinged connecting frame arranged on the back of the accessory connecting frame extends into the middle part of the accessory connecting frame. The two sides of the hinged connecting frame are provided with the rotary limiting plates fixedly connected with the accessory connecting frame. The hinged structure installed on the hinged connecting frame is hinged with one end of the support arm assembly. The other end of the support arm assembly is hinged with the chassis connecting frame. The lifting oil cylinder is hinged with the support arm assembly and the chassis connecting frame respectively. The swing oil cylinder is arranged between the accessory connecting frame and the chassis connecting frame and is hinged with the accessory connecting frame and the chassis connecting frame respectively. The device can solve the problems of low utilization rate, low flexibility, long replacement and installation time and low efficiency of the snow removing vehicle caused by the single snow removing accessory.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of snow removal machinery manufacturing, in particular to a switching device for quickly switching snow removal tools of a snow removal vehicle. BACKGROUND

[0002] Snow removal vehicles are special vehicles indispensable for snow removal in winter in the north. Most snow removal devices are single installation of a snow pushing shovel or a snow rolling brush. A snow removal device is only used for installing a snow pushing shovel or a snow rolling brush. After snow is pushed, there is still residual snow on the ground, which needs to be further cleaned by a vehicle with a snow sweeping function. The single function results in low utilization rate of the vehicle, and multiple snow removal devices are needed to complete the task of road snow removal, which greatly increases the cost. The winter season is relatively short, and the snow removal vehicle is placed after the snow season and cannot be used for other purposes, so that one machine cannot be used for multiple purposes, and the flexibility is not high. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a snow removal tool quick switching device, which can solve the problems of low utilization rate of the vehicle caused by single snow removal tool configuration of the existing snow removal vehicle, inability to realize one machine for multiple purposes, low flexibility, long replacement and installation time of the snow removal tool, and low efficiency.

[0004] In order to solve the above problems, the technical scheme of the present application is as follows: the snow removal tool quick switching device comprises a tool connecting frame and a chassis connecting frame, further comprises a hinged connecting frame, a rotary limiting plate, a limiting pressing plate, a hinged structure, a support arm assembly, a lifting oil cylinder and a swing oil cylinder;

[0005] The hinged connecting frame is arranged on the back of the tool connecting frame, and the rotary shaft of the hinged connecting frame extends into the middle part of the tool connecting frame; the rotary limiting plates are arranged on both sides of the hinged connecting frame, and the rotary limiting plates and the tool connecting frame are fixedly connected by pressing and connecting the limiting pressing plate, the rotary limiting plates limit the rotary range of the hinged connecting frame to ±5°; the hinged connecting frame is connected with the hinged structure, and one end of the hinged structure is hinged with the support arm assembly; the other end of the support arm assembly is hinged with the chassis connecting frame; the lifting oil cylinder is hinged with the support arm assembly and the chassis connecting frame at both ends respectively; the swing oil cylinder is arranged outside between the tool connecting frame and the chassis connecting frame, and both ends of the swing oil cylinder are hinged with the tool connecting frame and the chassis connecting frame respectively; the swing oil cylinder controls the swing range of the tool connecting frame to ±32°.

[0006] In the technical solution, more specific solutions are: the branch arm assembly includes upper and lower branch arms arranged in sequence; the upper and lower ends of the hinge structure are respectively hinged to one end of the upper branch arm and the lower branch arm through hexagonal head bolts; the other end of the upper branch arm is hinged to the chassis connecting frame through a hinge bolt; the other end of the lower branch arm is hinged to the chassis connecting frame through a branch arm fixing pin; and the lifting oil cylinder is hinged to the upper branch arm.

[0007] Further, one end of the swing oil cylinder is hinged to an oil cylinder front swing through a swing oil cylinder connecting pin; the oil cylinder front swing is hinged to the tool connecting frame through a front swing fixing pin; the other end of the swing oil cylinder is hinged to an oil cylinder rear swing through a swing oil cylinder connecting pin; and the oil cylinder rear swing is hinged to the chassis connecting frame through an oil cylinder fixing pin.

[0008] Further, the upper and lower ends of the hinge connecting frame are hinged to the hinge structure through hinge connecting pins.

[0009] Further, the two ends of the lifting oil cylinder are respectively hinged to the upper branch arm and the chassis connecting frame through lifting oil cylinder connecting pins.

[0010] Further, the front of the tool connecting frame is provided with a connecting groove and a tool connecting limiting pin for connecting with corresponding snow removing tools.

[0011] Further, the rotation limiting plate is fixed to the back of the tool connecting frame through flange face bolts.

[0012] Further, the hexagonal head bolt has a specification of M20; the hinge bolt has a specification of M24; the branch arm fixing pin has a diameter of φ20; the hinge connecting pin, the lifting oil cylinder connecting pin, the oil cylinder fixing pin, the swing oil cylinder connecting pin and the front swing fixing pin all have a diameter of φ30.

[0013] Compared with the prior art, the present application has the following beneficial effects:

[0014] The present application can effectively solve the snow removing requirements of different tools of the snow removing vehicle, realize quick switching of different tools, solve the quick switching problem of snow sweeping and snow pushing tools on a single snow removing device; because it is made into a detachable type, it is convenient for the vehicle to replace the front end switching structure for other purposes, realize one machine with multiple functions, and is flexible and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is one of the structure schematic diagrams of the present application;

[0016] Figure 2 is the second structure schematic diagram of the present application;

[0017] Figure 3 is the structure explosion diagram of the present application;

[0018] Figure 4 is a schematic diagram of the snow shovel accessory of the present application;

[0019] Figure 5 is a schematic diagram of the rolling brush accessory of the present application.

[0020] The reference signs in the drawings are as follows:

[0021] 1, accessory connecting limit pin; 2, accessory connecting frame; 3, hinged connecting frame; 4, rotating limit plate; 5, limit pressing plate; 6, hinged connecting pin; 7, hinged structure; 8, hexagonal head bolt; 9, upper supporting arm; 10, articulated bolt; 11, chassis connecting frame; 12, lifting oil cylinder connecting pin; 13, lifting oil cylinder; 14, supporting arm fixing pin; 15, lower supporting arm; 16, oil cylinder fixing pin; 17, oil cylinder rear swing; 18, swing oil cylinder connecting pin; 19, swing oil cylinder; 20, front swing fixing pin; 21, copper sleeve; 22, oil cylinder front swing; 23, snow shovel; 24, rolling brush. DETAILED DESCRIPTION

[0022] The present application is further described below in conjunction with the drawings and examples:

[0023] Figure 1 , Figure 2 and Figure 3 The snow removing accessory quick switching device of the present application comprises a hinged connecting frame 3, a rotating limit plate 4, a limit pressing plate 5, a hinged connecting pin 6, a hinged structure 7, a hexagonal head bolt 8, an upper supporting arm 9, an articulated bolt 10, a lifting oil cylinder connecting pin 12, a lifting oil cylinder 13, a supporting arm fixing pin 14, a lower supporting arm 15, an oil cylinder fixing pin 16, an oil cylinder rear swing 17, a swing oil cylinder connecting pin 18, a swing oil cylinder 19, a front swing fixing pin 20, a copper sleeve 21, and an oil cylinder front swing 22, which are installed between the accessory connecting frame 2 and the chassis connecting frame 11.

[0024] The attachment connecting frame 2 has a corresponding connecting groove and attachment connecting limit pin 1 on the front for connecting with snow removal attachments. A hinge connecting frame 3 is provided on the back of the attachment connecting frame 2. The rotation axis of the hinge connecting frame 3 extends into the middle of the attachment connecting frame 2, allowing the hinge connecting frame 3 to rotate relative to the attachment connecting frame 2. Rotation limit plates 4 are provided on the left and right sides of the hinge connecting frame 3, and are pressed together with limit pressure plates 5. The rotation limit plates 4 are fixed to the back of the attachment connecting frame 2 by eight M16 flange bolts. The rotation limit plates 4 restrict the rotation of the hinge connecting frame 3. In this embodiment, the hinge connecting frame 3 can rotate within a range of ±5°. The upper and lower ends of the hinge connecting frame 3 are hinged to the hinge structure 7 by hinge connecting pins 6 with a diameter of φ30. The upper end of the hinge structure 7 is provided with lifting lugs for lifting the entire device. The upper and lower ends of the hinge structure 7 are respectively hinged to one end of the upper support arm 9 and the lower support arm 15 by M20 hexagonal head bolts 8. The other end of the upper support arm 9... The upper arm 9 is hinged to the chassis connecting frame 11 via an M24 hinge bolt 10, and the other end of the lower arm 15 is hinged to the chassis connecting frame 11 via a φ20 arm fixing pin 14. A lifting cylinder 13 is positioned between the upper arm 9 and the chassis connecting frame 11, with both ends of the lifting cylinder 13 hinged to the upper arm 9 and the chassis connecting frame 11 via φ30 lifting cylinder connecting pins 12. A swing cylinder 19 is installed on each of the two outer sides between the attachment connecting frame 2 and the chassis connecting frame 11. One end of the swing cylinder 19 is hinged to the attachment connecting frame 2 via a cylinder front swing 22 and a φ30 front swing fixing pin 20, and the other end is hinged to the chassis connecting frame 11 via a cylinder rear swing 17 and a φ30 cylinder fixing pin 16. The cylinder front swing 22... The rear swing arm 17 of the hydraulic cylinder is fitted with a swing cylinder connecting pin 18 with a diameter of φ30. The front swing arm 22 of the hydraulic cylinder is rotatable and has a copper sleeve 21 installed inside. The copper sleeve 21 serves to lubricate and reduce friction, allowing the attachment to swing more smoothly from left to right. In this embodiment, the swing cylinder 19 controls the attachment connecting frame 2 to swing from left to right within a range of ±32°.

[0025] The invention features a snow removal attachment that is attached to the front via an attachment connecting frame, and a detachable chassis connecting frame at the rear, which is connected to the chassis via bolts or other connecting parts. The hinged part in the middle allows the snow removal attachment to rotate or tilt at a certain angle to cope with uneven road conditions. Swing cylinders are installed at both ends, which can achieve a swing angle of ±32°, and a lifting cylinder is installed in the middle to achieve lifting and lowering.

[0026] like Figure 4 As shown, Figure 4 (a) shows the case where the snowplow 23 of the snow removal attachment of the present invention is installed. Figure 4 (b) shows the situation after unloading the snowplow 23; as Figure 5 As shown, Figure 5 (a) shows the installation of the roller brush 24 in the snow removal attachment of the present invention. Figure 5(b) is the situation after the roll brush 24 has been unloaded.

Claims

1. A quick-change device for snow removal attachments, comprising an attachment connecting frame (2) and a chassis connecting frame (11), characterized in that: It also includes a hinged connecting frame (3), a rotating limiting plate (4), a limiting pressure plate (5), a hinged structure (7), a support arm assembly, a lifting cylinder (13), and a swing cylinder (19). The hinged connecting frame (3) is located on the back of the attachment connecting frame (2), and the rotation axis of the hinged connecting frame (3) extends into the middle of the attachment connecting frame (2); the hinged connecting frame (3) is provided with rotation limiting plates (4) on both sides, and the rotation limiting plates (4) are pressed together with the attachment connecting frame (2) by the limiting pressure plate (5), and the rotation limiting plates (4) limit the left and right rotation range of the hinged connecting frame (3) to ±5°; the hinged connecting frame (3) is connected to the hinge structure (7), and the hinge structure (7) is hinged to one end of the support arm assembly; the other end of the support arm assembly is hinged to the chassis connecting frame (11); The lifting cylinder (13) is hinged at both ends to the support arm assembly and the chassis connecting frame (11); the swing cylinder (19) is provided on the outer side between the attachment connecting frame (2) and the chassis connecting frame (11), and the two ends of the swing cylinder (19) are hinged to the attachment connecting frame (2) and the chassis connecting frame (11); the swing cylinder (19) controls the attachment connecting frame (2) to swing left and right within a range of ±32°; the support arm assembly includes an upper support arm (9) and a lower support arm (15) arranged vertically; the hinge structure (7) is hinged at both ends to one end of the upper support arm (9) and the lower support arm (15) respectively by hexagonal head bolts (8), and the other end of the upper support arm (9) is hinged to the chassis connecting frame (11) by a hinge bolt (10). The other end of the lower support arm (15) is hinged to the chassis connecting frame (11) via a support arm fixing pin (14); the lifting cylinder (13) is hinged to the upper support arm (9); one end of the swing cylinder (19) is hinged to the cylinder front swing (22) via a swing cylinder connecting pin, and the cylinder front swing (22) is hinged to the attachment connecting frame (2) via a front swing fixing pin (20); the other end of the swing cylinder (19) is hinged to the cylinder rear swing (17) via a swing cylinder connecting pin (18), and the cylinder rear swing (17) is hinged to the chassis connecting frame (11) via a cylinder fixing pin (16).

2. The quick-change device for snow removal attachments according to claim 1, characterized in that: The upper and lower ends of the hinged connecting frame (3) are hinged to the hinged structure (7) through hinged connecting pins (6).

3. The quick-change device for snow removal attachments according to claim 2, characterized in that: The lifting cylinder (13) is hinged to the upper arm (9) and the chassis connecting frame (11) at both ends via lifting cylinder connecting pins (12).

4. The quick-change device for snow removal attachments according to claim 1, characterized in that: The attachment connector (2) is provided with a connection slot and attachment connection limit pin (1) for connecting with the corresponding snow removal attachment.

5. The quick-change device for snow removal attachments according to claim 3, characterized in that: The rotating limiting plate (4) is fixed to the back of the attachment connecting frame (2) by flange bolts.

6. The quick-change device for snow removal attachments according to claim 5, characterized in that: The hexagonal head bolt (8) is M20; the hinge bolt (10) is M24; the support arm fixing pin (14) has a diameter of φ20; the hinge connecting pin (6), the lifting cylinder connecting pin (12), the cylinder fixing pin (16), the swing cylinder connecting pin (18), and the front swing fixing pin (20) all have a diameter of φ30.

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