Snow sweeper hanger lifting limiting device

Abstract

The utility model discloses a snow sweeper hanger lifting limiting device which comprises a hanger with a rolling brush, the hanger is connected with a connecting frame through an upper lifting arm, a lower lifting arm and an oil cylinder, a lifting arm connecting plate is hinged between the upper lifting arm and the lower lifting arm, and an upper limiting plate and a lower limiting plate are respectively arranged at the hinged position for limiting. One end of an oil cylinder is connected to the connecting frame, the other end of the oil cylinder is hinged to the upper lifting arm, a limiting plate pin hole is formed in the lower limiting plate, and a hanging frame pin hole is formed in the position, coinciding with the limiting plate pin hole, of the hanging frame when the oil cylinder stretches out and draws back to the maximum degree; and the quick-release steel ball pin is used for connecting and fixing the limiting plate pin hole and the hanger pin hole when the oil cylinder stretches to the maximum extent. Compared with the prior art, the hanging frame lifting limiting device of the snow sweeper can solve the problems that an existing hanging frame lifting limiting device of the snow sweeper is insufficient in supporting force on a rolling brush, the lifting reliability of the rolling brush is low, and potential safety hazards exist.

Description

TECHNICAL FIELD

[0001] The utility model relates to characteristic vehicle manufacturing technical field especially a kind of mechanical limiting device when lifting with snow-removal vehicle rolling brush hanger. BACKGROUND

[0002] The overall weight of the rolling brush for snow-removal vehicle is heavy, and the length is long. The rolling brush is usually used for cleaning thin snow on the road. The hanger connected with the rolling brush is connected with the connecting frame through the upper and lower lifting arms and the oil cylinder. The connecting frame is connected with the snow-removal vehicle. The rolling brush is driven to rise and fall by the extension and contraction of the oil cylinder. When the rolling brush works close to the ground, the hanger is at the lowest position, and the lifting oil cylinder is in the state of minimum stroke. When the rolling brush is lifted, the lifting oil cylinder is elongated, and the upper lifting arm rotates clockwise around the fixed point as the oil cylinder is elongated. The rolling brush is supported by the oil cylinder in an inclined state, and the support force is not enough. The upper and lower lifting arms connected with the rolling brush are prone to be out of position with the hanger. The rolling brush falls by one stroke, which brings safety hazards. When the rolling brush is cleaned and maintained, the lifting and falling reliability and stability of the rolling brush are required. In addition, outdoor operation is required, and a convenient and relatively firm device is needed to help the rolling brush rise and fall. SUMMARY

[0003] The utility model solves the problem of providing a snow-removal vehicle hanger lifting limiting device to solve the problem that the existing snow-removal vehicle hanger lifting limiting device does not have enough support for the rolling brush, the rolling brush has low lifting reliability, and there are safety hazards.

[0004] To solve the above problems, the technical scheme of the utility model is as follows: the snow-removal vehicle hanger lifting limiting device includes a hanger with a rolling brush connected with a connecting frame through an upper lifting arm and a lower lifting arm and an oil cylinder. The upper lifting arm and the lower lifting arm are hingedly connected with a lifting arm connecting plate, and an upper limiting plate and a lower limiting plate are respectively arranged at the hinge connection position for limiting. The upper lifting arm and the lower lifting arm are respectively hingedly connected with the upper part and the lower part of the connecting frame through a connecting block. One end of the oil cylinder is connected with the connecting frame, and the other end is hingedly connected with the upper lifting arm. The lower limiting plate is provided with a limiting plate pin hole. When the oil cylinder is fully extended, the hanger is provided with a hanger pin hole at the position coinciding with the limiting plate pin hole. The device further includes a quick-release steel ball pin for connecting and fixing the limiting plate pin hole and the hanger pin hole when the oil cylinder is fully extended.

[0005] In the above technical scheme, a more specific scheme can be as follows: the quick-release steel ball pin includes a through hole radially arranged at the top of a cylindrical pin. Two steel balls are respectively arranged at the two ends of the through hole. A spring is arranged between the two steel balls. The opening of the through hole at the two ends is smaller than the maximum diameter of the steel ball. The pin seat end of the cylindrical pin is provided with a circular protruding pin seat part for clamping and holding.

[0006] Furthermore, the upper limit plate and the lower limit plate are provided with arcuate portions that support the upper lifting arm and the lower lifting arm.

[0007] Furthermore: the upper limit plate is hinged to the bracket via two positioning pins, and the lower limit plate is hinged to the bracket via one positioning pin and spot-welded to the lower lifting arm.

[0008] Furthermore, it also includes a sleeve for holding the quick-release ball pin when not in use.

[0009] Furthermore: the sleeve is located above the pin hole of the bracket on the bracket.

[0010] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0011] This snowplow mount lifting limit device uses a limit plate installed under the lifting arm. The upper limit plate is hinged to the mount by two pins, and the lower limit plate is welded to the lower lifting arm by one pin and the hinge point. Combined with the lifting arm connecting plate, this creates a four-bar linkage-like structure between the mount with the roller brush and the connecting frame during lifting. The lower limit plate and mount have pin holes. When the mount is raised to its highest point, the two pin holes overlap, and a quick-release ball bearing pin is inserted for locking. The quick-release ball bearing pin features a double ball bearing spring design. When the top of the quick-release ball bearing pin passes through the lower limit plate and mount, the double ball bearings retract into the quick-release ball bearing pin. After the top protrudes, the double ball bearings partially pop out under the spring's action, effectively locking the mount in place. Attached Figure Description

[0012] Figure 1 This is a partial cross-sectional view of the quick-release steel ball pin according to an embodiment of this utility model;

[0013] Figure 2 This is an exploded view of an embodiment of the present utility model;

[0014] Figure 3 This is an isometric view of the hanging bracket in the embodiment of this utility model when it is raised to its maximum position;

[0015] Figure 4 This is an isometric view of the hanging bracket in the lifting process according to an embodiment of this utility model;

[0016] The diagram shows: Hanger 1, Hanger pin hole 1-1, Lifting arm connecting plate 2, Upper limit plate 3, Positioning pin 3-1, Upper lifting arm 4, Hydraulic cylinder 5, Connecting frame 6, Lower lifting arm 7, Lower limit plate 8, Limit plate pin hole 8-1, Positioning pin 8-2, Quick release steel ball pin 9, Cylindrical pin 9-1, Through hole 9-2, Steel ball 9-3, Spring 9-4, Pin seat 9-5, Hook 9-6, Connecting block 10, Sleeve 11. Detailed Implementation

[0017] The utility model embodiment is further described in detail below with reference to the drawings:

[0018] As Figures 1 to 4 The snow removal vehicle hanger lifting limiting device shown in the figure, including the hanger 1 with the rolling brush is connected through the upper lifting arm 4 and the lower lifting arm 7 and the oil cylinder 5 connecting frame 6, the upper lifting arm 4 and the lower lifting arm 7 are hinged with the lifting arm connecting plate 2 between, and are respectively provided with upper limiting plate 3 and lower limiting plate 8 limiting at the hinge, the upper lifting arm 4 and the lower lifting arm 7 are respectively hinged in the upper part and the lower part of connecting frame 6 through connecting block 10, the oil cylinder 5 bottom end is connected on connecting frame 6, the power output end is hinged on the upper lifting arm 4, the lower limiting plate 8 is provided with limiting plate pin hole 8-1, and the hanger pin hole 1-1 is provided at the position of coincidence with the limiting plate pin hole 8-1 on the hanger 1 when the oil cylinder 5 is retracted to the maximum. The device further includes quick-release steel ball pin 9 for connecting and fixing limiting plate pin hole 8-1 and hanger pin hole 1-1 when the oil cylinder is retracted to the maximum.

[0019] As Figure 1 The quick-release steel ball pin 9 shown in the figure, including the through hole 9-2 radially provided in the pin top of cylindrical pin 9-1, one steel ball 9-3 is respectively arranged at the both ends of the through hole, spring 9-4 is arranged between the two steel balls 9-3, the opening of the both ends of the through hole is less than the maximum diameter of the steel ball, and the pin seat end of cylindrical pin 9-1 is provided with the circular convex pin seat part 9-5 for clamping and holding.

[0020] The upper limiting plate 3 and the lower limiting plate 8 are provided with the arc part for supporting the upper lifting arm and the lower lifting arm, the upper limiting plate 3 is hinged with the hanger 1 through two positioning pins 3-1, the relative rotation between the upper limiting plate and the hanger can be realized, the lower limiting plate 8 is hinged with the hanger 2 through one positioning pin 8-2 and is spot-welded with the lower lifting arm 7, the relative rotation between the lower limiting plate and the hanger can be realized.

[0021] The device further includes a sleeve 11 for placing the idle quick-release steel ball pin 9, the sleeve 11 is arranged above the hanger pin hole on the hanger 1, the pin seat part of the quick-release steel ball pin 9 is provided with the hook 9-6 for facilitating taking and placing, and the storage and timely taking are facilitated.

[0022] When the rolling brush works on the ground, the oil cylinder 5 is contracted to the minimum stroke state, the hanger pin hole 1-1 is misaligned with the limit block pin hole 8-1 of the lower limit plate, and the quick release ball pin 9 is stored in the simple sleeve 11 at this time; when the rolling brush is lifted, the oil cylinder 5 is elongated, the hanger with the rolling brush is lifted, the upper lifting arm 4 rotates clockwise with the fixed point, and the upper and lower lifting arms of the hanger also rotate, after the oil cylinder 5 is lifted to the maximum stroke, the hanger pin hole 1-1 of the hanger coincides with the limit block pin hole 8-1 of the lower limit plate at this time, and then the quick release ball pin 9 is inserted into the two pin holes. When the top of the quick release ball pin passes through the two pin holes, the two steel balls 9-3 in the top through hole of the quick release ball pin are completely pressed into the through hole 9-2, and after the top of the quick release ball pin passes through the two pin holes, the two steel balls 9-3 are partially ejected under the pressure of the spring 9-4, which plays a role of clamping the hanger pin hole 1-1, and the upper and lower lifting arms are fixed by the lifting arm connecting plate, thereby achieving the purpose of limiting the hanger and the lower limit plate by mechanical means.

[0023] The device sets a limit plate under the lifting arm, and the upper limit plate is hinged to the hanger through two pins, the lower limit plate is hinged to the other point of the hanger through a pin and is welded on the lower lifting arm, and the lifting arm connecting plate is added, so that the hanger with the rolling brush forms a structure similar to a four-bar linkage during lifting, the lower limit plate and the hanger are provided with pin holes, the two pin holes coincide when the hanger is lifted to the highest position, and the quick release steel ball pin is inserted for limiting. The device uses the characteristics of the driving arm (upper lifting arm) and the driven arm (lower lifting arm) and the characteristics of the lifting truss structure to design a pure mechanical device that can limit efficiently when the rolling brush lifting and rotating mechanism is fixed.

[0024] After the rolling brush is lifted, the rolling brush has a certain height from the ground, and there is a certain risk of relying on the support of the oil cylinder, and the quick release steel ball pin limiting can quickly and conveniently limit to achieve safe locking, which is not only convenient and fast, but also small and durable, and has the effect of "four ounces move a ton", and can avoid the falling risk caused by oil cylinder failure and further expansion of the user's economic loss.

[0025] Compared with the previous structure, the device structure is relatively simple, convenient to disassemble and assemble, the effect is remarkable, and is suitable for mechanical limiting of larger load.

Claims

1. A snow plow carrier lifting limiting device, comprising a carrier with a rolling brush, a connecting frame connected through an upper lifting arm and a lower lifting arm and an oil cylinder, characterized in that: The upper lifting arm and the lower lifting arm are hinged with a lifting arm connecting plate, and are respectively provided with an upper limiting plate and a lower limiting plate at the hinge position for limiting, the upper lifting arm and the lower lifting arm are respectively hinged with a connecting block at the upper part and the lower part of a connecting frame, one end of the oil cylinder is connected to the connecting frame, and the other end is hinged to the upper lifting arm, the lower limiting plate is provided with a limiting plate pin hole, and the hanger pin hole is arranged at the position coinciding with the limiting plate pin hole when the oil cylinder is stretched to the maximum. The fast release steel ball pin is further included for connecting and fixing the limiting plate pin hole and the hanger pin hole when the oil cylinder is stretched to the maximum.

2. The snow plow mount lift stop device of claim 1, wherein: The fast release steel ball pin includes a through hole radially arranged on the top of the cylindrical pin, two steel balls are respectively arranged at the two ends of the through hole, a spring is arranged between the two steel balls, the opening of the two ends of the through hole is smaller than the maximum diameter of the steel ball, and a pin seat part with a circular protrusion for clamping and holding is arranged on the pin seat end of the cylindrical pin.

3. The snow plow mount lift stop device of claim 2, wherein: The upper limiting plate and the lower limiting plate are provided with a circular arc part for supporting the upper lifting arm and the lower lifting arm.

4. The snow plow mount lift stop device of claim 3, wherein: The upper limiting plate is hinged with the hanger through two positioning pins, and the lower limiting plate is hinged with the hanger through one positioning pin and is spot-welded with the lower lifting arm.

5. The snow plow mount lift stop device of claim 4, wherein: A sleeve for placing the fast release steel ball pin when not in use is further included.

6. The snow plow mount lift stop device of claim 5, wherein: The sleeve is arranged above the hanger pin hole on the hanger.

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