CN214328678U - A overhaul protection component and sanitation motor sweeper for sanitation motor sweeper - Google Patents

Abstract

The application relates to an overhaul protection assembly for an environmental sanitation sweeper and the environmental sanitation sweeper. The sanitation sweeper truck comprises a support structure and a tank body pivotally connected to the support structure in a laterally extending pivot and capable of being lifted in a pivoting manner relative to the support structure, and an access guard assembly is disposed within a receiving space defined by a bottom of the tank body and a top of the support structure and includes a stay and a cooperating mechanism cooperating with the stay. The stay includes longitudinally opposed first and second ends and a straight shaft connecting the first and second ends, the first end being hinged on the bottom of the box and the second end resting on the top of the support structure and being movable from a first position away from the pivot to a second position proximate the pivot as the lift angle of the box changes from 0 ° to a first predetermined angle that is non-zero. The engagement mechanism includes a step rising from the top surface of the support structure that abuts a distal portion of the second end in the second position.

Description

A overhaul protection component and sanitation motor sweeper for sanitation motor sweeper

Technical Field

The present application relates generally to the field of urban sanitation and more particularly to an overhaul guard assembly for an sanitation sweeper and a sanitation sweeper including the overhaul guard assembly.

Background

Sanitation is an important aspect of city management, and concerns city appearance and appearance of cities and production and living environments of citizens. Currently, many sanitation vehicles have been developed to more automate sanitation operations and reduce labor intensity. Meanwhile, the overhaul of the vehicle becomes an important aspect for ensuring the normal running of the vehicle and the efficient and stable development of environmental sanitation cleaning operation.

In the prior art, a support rod for overhauling the environmental sanitation sweeper is hinged to the outer side of an auxiliary frame of a vehicle chassis and is configured to be matched with a limit groove arranged in the bottom of a box body after the box body of the vehicle is lifted to a set angle to support the box body, so that the situation that the box body suddenly falls down under the action of gravity and the safety of an overhauling worker is damaged due to oil leakage of a lifting hydraulic cylinder is avoided. The struts of the prior art are simple in construction and easy to arrange, but still suffer from several deficiencies. For example, manually holding the stay bars is troublesome and there may be a safety hazard that the box body suddenly falls during the process of holding the stay bars by the maintainers. For another example, the proper support of the support rod is very sensitive to the lifting angle of the box body, when the lifting angle of the box body is too large, the support rod cannot contact the limit groove at the bottom of the box body, and when the lifting angle of the box body is not sufficient, the support rod cannot be placed in the limit groove, so that the support rod can be properly assembled in the limit groove to complete the support by frequently debugging the lifting angle of the box body back and forth, which is very time-consuming and tedious. For another example, after the maintenance is completed, the maintenance personnel easily forget to manually reset the stay bars to the installation positions on the auxiliary frame before returning to the cab operating box, so that the stay bars are bent or even broken, and further personnel and property safety accidents are caused.

Therefore, there is a need for further improvements in service struts.

SUMMERY OF THE UTILITY MODEL

The technical problem that this application will solve is: the manual operation of the maintenance support rod of the environmental sanitation sweeper is reduced or eliminated, and the sensitivity of the support rod support to the lifting angle of the carriage is reduced.

According to one aspect of the present application there is provided an access guard assembly for a sanitation sweeper truck, the sanitation sweeper truck including a support structure and a bin pivotally connected to and raisable relative to the support structure in a laterally extending pivot, characterised in that the access guard assembly is disposed within a receiving space defined by the bottom of the bin and the top of the support structure and includes a stay and an engagement means cooperating with the stay, wherein the stay includes longitudinally opposed first and second ends and a straight shank connecting the first and second ends, the first end is hinged to the bottom of the bin and the second end rests on the top of the support structure and is movable from a first position remote from the pivot to a second position adjacent the pivot as the lifting angle of the bin varies from 0 ° to a first predetermined angle which is non-zero, and wherein, the engagement mechanism includes a step rising from the top surface of the support structure that abuts a distal portion of the second end in the second position.

Optionally, the engagement mechanism further comprises a jaw member configured to selectively change orientation relative to a horizontal plane, the jaw member disposed on the top surface proximal of the step and at least partially in contact with a proximal portion of the second end in the second position.

Optionally, the service guard assembly further comprises an actuator in mechanical communication with the jaw member to change the jaw member from a non-actuated position to an actuated position, wherein in the non-actuated position the jaw member is oriented to tilt downwardly in a proximal to distal direction and in the actuated position the jaw member is oriented to tilt upwardly in a proximal to distal direction.

Optionally, the step has a height that gradually increases along the length from the distal end to the proximal end, and a maximum height at the proximal end of the step is at least greater than half of a vertical height of the second end of the strut.

Optionally, the proximal portion of the jaw member is pinned to a pair of wings and the pair of wings are disposed on lateral sides of the shaft of the strut with the second end in the second position.

Optionally, the second end of the strut projects laterally from the shaft, and the lateral spacing between the pair of wings is less than the lateral extent of the second end.

Optionally, the paddle is seated on a base fixedly connected to the top surface and has an arcuate profile extending from the base above a proximal portion of the threshold, and the pin connection point of the jaw member to the paddle is located between half the vertical height of the base and the paddle.

Optionally, the first end of the strut is a first distance from the pivot of the case and the first distance is no more than one half of the longitudinal length of the case.

Optionally, the first distance is two fifths of the longitudinal length of the cabinet, and the first predetermined angle is greater than or equal to 44 ° and less than 50 °.

According to another aspect of the present application, there is provided a sanitation sweeper truck including a service guard assembly as previously described for the sanitation sweeper truck.

According to the utility model provides a supporting and resetting of vaulting pole and the lifting and the decline linkage of box in the sanitation motor sweeper maintenance protective assembly, whole journey need not manual operation to it is spacing to take the unilateral to support the vaulting pole, thereby greatly reduced the vaulting pole prop up the sensitivity to box lifting angle. The whole mechanical design is steady, the structure is simple, the maneuvering is rapid, and the efficiency is high and the convenience is high.

Drawings

Embodiments of the present application are described below with reference to the drawings. In the drawings:

FIG. 1 is a plan side view of an example of an environmental sanitation sweeper truck maintenance shield assembly according to the present disclosure, as the stay is erected; and is

Fig. 2 is a top plan view of an example of a step and pawl of the sanitation sweeper truck maintenance guard assembly according to the present disclosure.

Throughout the drawings, like reference numerals are used to refer to like parts/components.

Detailed Description

The following description of the embodiments of the present disclosure is provided only for the purpose of enabling those skilled in the art to fully understand and practice the present invention, and is not intended to limit the scope of the present disclosure.

The term "sanitation sweeper" as used herein is to be understood broadly as referring to a special vehicle for environmental sanitation having a tank capable of tipping relative to a supporting structure (e.g., a sub-frame for a class ii chassis), and is not limited to the specific use of the vehicle or the specific manner in which the tank is tipped. The disclosed service guard assembly is also applicable to other types of dump trucks.

The term "lift" as used herein is to be understood in its ordinary meaning in the art. Generally, "lifting" a bin refers to pivoting a bin seated on a support structure at an angle relative to the support structure, and this angle is defined as the "lifting angle". Accordingly, "lowering" or "lowering" the case refers to returning the case at a certain lifting angle towards the angle at which it is seated on the support structure. When the lifting angle is zero, the tank rests on the support structure.

In addition, the use of spatially relative terms as referred to herein with reference to a support structure defines: "lateral" is the direction parallel to the pivot axis about which the tank is turned relative to the supporting structure, "longitudinal" is the direction perpendicular to the lateral direction in a horizontal plane, and "distal", "front" or "front" denotes the orientation or region longitudinally distant from the tank pivot axis, and "proximal", "rear" or "rear" denotes the orientation or region longitudinally close to the tank pivot axis.

Fig. 1 illustrates an example of an environmental sanitation sweeper service guard assembly 1 (hereinafter also referred to simply as a "service guard assembly") according to the present disclosure. As shown, the service guard assembly 1 generally comprises a stay 4 having one end 4a (hereinafter also referred to as "hinged end") hinged to the bottom of the tank 2 and the other end 4b (hereinafter also referred to as "movable end") capable of moving longitudinally between a plurality of positions on a receiving surface 31 of the support structure 3 to which the tank 2 is pivoted, a step 5 rising from the receiving surface 31 for limit-holding the movable end 4b of the stay 4, a claw 6 disposed opposite the step 5 at a proximal side of the step 5 for catching the movable end 4b of the stay 4, and an actuator 7 cooperating with the claw 6 for guiding the movable end 4b of the stay 4 above the step 5.

Instead of the struts being mounted in an articulated manner outside the subframe as in the prior art, the strut 4 according to the example of fig. 1 is provided so as to be articulated to the bottom of the pivotally movable casing 2 so that the movable end 4b of the strut 4 can move on the receiving surface 31 as the casing 2 is lifted and lowered. In the illustrated example, the pivot 23 of the box 2 is provided at the bottom rear edge of the box and is connected to the support structure 3 by pivot holes 32a provided at the upper rear edges of a plurality of longitudinally extending corbels 32. The corbels 32 rest on the receiving surface 31 (see fig. 2) laterally spaced from each other and have a uniform height, so that the tank 2 can be supported on the support structure 3 in a substantially horizontal orientation via the corbels 32. The height of the corbel 32 is higher than the height of the jaws 6 and the threshold 5, so that the service guard assembly 1 is housed in the housing space defined by the housing surface 31 of the support structure 3 and the corbel 32 below the bottom of the tank 2 when the tank 2 is seated on the corbel 32. However, other arrangements are possible which allow the service guard assembly to be accommodated between the bottom of the tank and the support structure of the tank. For example, the case may be provided therein with an accommodation recess or the like.

The stay 4 is made of a rigid material and is movable about an axis of rotation parallel to the pivot 23. In addition to the hinged end 4a and the free end 4b, the stay 4 comprises a substantially straight shank 4c connecting said hinged end 4a and free end 4 b. In the example illustrated, the hinged end 4a is pinned to a seat provided on the bottom of the tank 2 at a first distance L1 from the pivot 23. The first distance L1 is less than 1/2 of the longitudinal length of the tank 2 and is preferably about 2/5 of the longitudinal length of the tank 2. The movable end 4b is in the form of a cylinder disposed perpendicularly to the shaft 4c and extending transversely. Preferably, the movable end 4b extends from the shaft 4c to both lateral sides by the same distance. Alternatively, the cylinder of the active end 4b has a cylinder diameter similar to the effective rod diameter of the rod 4c and has a lateral extension of 3 times or more the effective diameter of the rod 4 c. In practice, the length of the longitudinal extension of the stay 4 may range between 60cm and 1m, and the effective diameter of the shaft 4c may range between 6cm and 8 cm.

When the tank 2 is supported on the corbel 32 with the lifting angle α of the tank being 0 °, the movable end 4b of the stay 4 is placed at the first position P1 (see fig. 2), and when the tank 2 is lifted to the first predetermined angle, the movable end 4b of the stay 4 will move to the second position P2 (see fig. 2), wherein the second position P2 is closer to the pivot 23 than the first position P1. As shown in fig. 1, a step 5 and a claw 6 are provided on longitudinally opposite sides of the movable end 4b at the second position P2, respectively.

The step 5, and more specifically, the rear edge of the step 5, is disposed at a position on the accommodation surface 31 where it abuts against the front edge of the movable end 4b when in the second position P2, so that the movable end 4b can be supported against the rear edge of the step 5 when the container body 2 is lifted to the first predetermined angle. Alternatively, the step 5 ensures that the stay 4 can support the tank 2 at the first predetermined angle without further lowering when the tank 2 is lifted to an angle greater than the first predetermined angle. The height of the rear edge of the step 5 is at least half the vertical height of the movable end 4b of the stay 4, so as to ensure that the stay 4 can be reliably supported against the rear edge of the step 5 without occasionally "jumping" over the rear edge of the step 5 under the supporting thrust. The height of the step 5 gradually increases in a direction from the first position P1 to the second position P2 so that the movement of the movable end 4b is not hindered or caught before the container body 2 is lifted to the first predetermined angle. Optionally, the step 5 has a generally flat inclined top surface as shown in fig. 1, to provide a convenient surface of movement for the movable end 4b of the strut 4 to move over. Also, the step 5 may have a longitudinal extension greater than the height of its trailing edge to avoid a certain degree of obstruction of the movement of the movable end 4b due to the steeper slope. Furthermore, as will be appreciated by those skilled in the art, the corners of the threshold 5 may be suitably smoothed to have rounded corners for the sake of reducing friction and preventing accidental injury from sharp edges. The transverse extent of the step 5 is preferably greater than the transverse extent of the movable end 4b to facilitate structural stressing of the step 5, to avoid stress concentrations, and optionally to extend adjacent the corbels 32 on both lateral sides (as shown in fig. 2) to accommodate variations in the location of the hinged end 4 a. The force of the brace 4 acting on the rear edge of the step 5 will be transmitted to the support structure 3 through the connection of the step 5 to the receiving surface 31. Alternatively, the step 5 may be formed integrally with the receiving surface 31 or fixedly connected to the receiving surface 31 by welding, bolting, or the like.

In the example of fig. 1, jaw 6 includes a first jaw member 6b in contact with a lower rear edge of movable end 4b in a second position P2, wherein first jaw member 6b pivots relative to second jaw member 6a about a pivot axis that is substantially parallel to pivot shaft 23 between an unactuated position in which first jaw member 6b is oriented to slope downwardly in a proximal-to-distal direction and an actuated position in which first jaw member 6b is oriented to slope upwardly in a proximal-to-distal direction. The second jaw member 6a has an arcuate profile extending above the rear edge of the threshold 5 to cooperate with the first jaw member 6b to capture the movable end 4b when the bin is further raised and to guide the movable end 4b over the threshold 5 when the bin is lowered from a second predetermined angle greater than the first predetermined angle.

Referring to fig. 1 and 2, the second jaw member 6a is in the form of a pair of wings 6a1, 6a2 disposed on either lateral side of the shaft 4c of the strut 4 when the movable end 4b is in the second position P2, and each wing is spaced from the shaft 4c no further than the distance of the respective lateral end of the movable end 4b from the shaft 4c, so that the second jaw member 6a can stop further longitudinal movement of the movable end 4 b. The first jaw member 6b has a tongue portion 6b2 at least partially contacting a rear lower edge of the movable end 4b in the second position P2 and a pin 6b1 connected to an end of the tongue portion 6b2 distal from the threshold 5 and pinned to the second jaw member 6 a. Alternatively, the wings 6a1, 6a2 are seated on a base 6c fixedly connected to the accommodation surface 31, and the pin 6b1 is connected in a range between the base 6c and half the vertical height of the wings 6a1, 6a 2. In the example of fig. 1, one end of the pin 6b1 extends through the flap 6a1 and is connected by a linkage 67 to the actuating member of the actuator 7 hinged on the housing surface 31. The actuator 7 may be, for example, a pneumatic actuator having a cylinder connected to the receiving surface 31 or a fixed part on the receiving surface 31 (e.g. the step 5 or the base 6c as shown in fig. 1 or 2) and a piston rod reciprocating under the gas pressure inside the cylinder. The actuator 7 rotates the first jaw member 6b connected thereto by the telescopic movement of the piston rod. When the first jaw member 6b is not actuated by the actuator 7, the first jaw member 6b is in the unactuated position, wherein the tongue 6b2 is oriented under its own weight to slope downwardly in a proximal-to-distal direction, i.e., in a direction from the second position P2 to the first position P1. When the service is completed and it is desired to lower the tank 2, the tank 2 will first be lifted further to a second predetermined angle greater than the first predetermined angle, with the movable end 4b of the stay 4 entering the space defined by the first jaw member 6b and the fixed second jaw member 6a in the non-actuated position. Thereafter, upon receiving a signal that the bin 2 is lifted to a second predetermined angle, the actuator 7 is activated to pivot the first jaw member 6b upwardly relative to the second jaw member 6a, capturing the movable end 4b and forcing the movable end 4b of the strut 4 towards the top of the threshold 5 in conjunction with the linkage of the lowering of the bin 2 until the disengagement tongue 6b2 falls on the top surface of the threshold 5. Thereafter, as the lifting angle α of the tank 2 continues to decrease to 0 °, the movable end 4b slides down the top surface of the step 5 onto the receiving surface 31 and returns to the first position P1. To ensure that the movable end 4b can be escaped from behind the threshold 5 by the pawl 6, the height of the leading edge of the upwardly inclined tongue 6b2 of the first pawl member 6b in the actuated position is equal to or greater than the height of the trailing edge of the threshold 5, and the gap from the trailing edge of the threshold 5 is less than the longitudinal width of the movable end 4 b.

Although there is a gap between the leading edge of the second jaw member 6a and the trailing edge of the step 5 in the illustrated example, it is also possible that the second jaw member 6a extends to directly above or forward of the trailing edge of the step 5 to continue to guide the movable end 4b to smoothly land on the step 5 after the movable end 4b is disengaged from the restraint of the tongue 6b 2. In addition, the seat 6c is optional, which facilitates the mounting and positioning of the claw 6 as a whole on the housing surface 31. Alternatively, the second jaw member 6a may also be directly connected to the receiving surface 31. Still alternatively, the hinged end 4a of the stay 4 is arranged at or near the bottom lateral middle of the tank 2, so that the tank 2 is supported for service protection by only one stay 4. Further, for ease of service, the first predetermined angle may be, for example, 44 ° and the second predetermined angle may be, for example, in the range of 45 ° to 50 °.

The illustrations and descriptions of the present disclosure above with reference to the drawings are exemplary only. Many other modifications, variations, and alternatives are possible without departing from the spirit and teachings of the present disclosure. And such modifications, variations, and alternatives are intended to be included within the scope of the present disclosure.

Claims (10)

1. An inspection and protection assembly (1) for a sanitation sweeper truck comprising a support structure (3) and a tank (2) connected to the support structure (3) at a laterally extending pivot (23) and capable of being lifted in a pivoting manner relative to the support structure (3), characterized in that said inspection and protection assembly (1) is disposed in a housing space defined by the bottom of the tank (2) and the top of the support structure (3) and comprises a stay (4) and a cooperating mechanism cooperating with the stay (4), wherein the stay (4) comprises longitudinally opposite first (4a) and second (4b) ends and a straight shank (4c) connecting the first (4a) and second (4b) ends, the first end (4a) being hinged on the bottom of the tank (2) and the second end (4b) resting on the top of the support structure (3) and capable of varying from 0 ° to a non-zero first end as a lifting angle (α) of the tank (2) changes A predetermined angle from a first position (P1) remote from the pivot axis (23) to a second position (P2) proximate to the pivot axis (23), and wherein the engagement mechanism comprises a step (5) rising from the top surface (31) of the support structure (3) abutting a distal portion of the second end (4b) at the second position (P2).

2. The service guard assembly (1) for a sanitation sweeper truck according to claim 1, wherein the engagement mechanism further comprises a jaw member (6b) selectively changeable in orientation relative to a horizontal plane, the jaw member (6b) being disposed on the top surface (31) proximal of the step (5) and at least partially in contact with a proximal portion of the second end (4b) in the second position (P2).

3. The service guard assembly (1) for a sanitation sweeper truck according to claim 2, wherein the service guard assembly (1) further comprises an actuator (7) in mechanical communication with the jaw member (6b) for changing the jaw member (6b) from a non-actuated position to an actuated position, wherein in the non-actuated position the jaw member (6b) is oriented to slope downwardly in a direction from the proximal end to the distal end and in the actuated position the jaw member (6b) is oriented to slope upwardly in a direction from the proximal end to the distal end.

4. The service guard assembly (1) for a sanitation sweeper truck according to any one of claims 1 to 3, wherein the step (5) has a height which progressively increases along the length from the distal end to the proximal end, and the maximum height at the proximal end of the step (5) is at least half the vertical height of the second end (4b) of the stay (4).

5. Service guard assembly (1) for a sanitation sweeper truck according to claim 2 or 3, wherein the proximal portion (6b1) of the pawl member (6b) is pinned to a pair of wings (6a1, 6a2), and the pair of wings (6a1, 6a2) are provided on lateral sides of the shaft (4c) of the stay (4) when the second end (4b) is in the second position (P2).

6. Service guard assembly (1) for a sanitation sweeper truck according to claim 5, wherein the second end (4b) of the stay (4) projects laterally from the shaft (4c) and the second end (4b) has a lateral extent greater than the lateral spacing between the pair of wings (6a1, 6a 2).

7. Service guard assembly (1) for a sanitation sweeper truck according to claim 5, wherein the wings (6a1, 6a2) are seated on a base (6c) fixedly connected to the top surface (31) and have an arcuate profile extending from the base (6c) over a proximal portion of the sill (5), and the pinned connection of the jaw member (6b) to the wings (6a1, 6a2) is located between the base (6c) and half the vertical height of the wings (6a1, 6a 2).

8. Service guard assembly (1) for a sanitation sweeper truck according to any of claims 1 to 3, wherein the first end (4a) of the stay (4) is at a first distance (L1) from the pivot (23) of the tank (2) and the first distance (L1) is no more than one half of the longitudinal length of the tank (2).

9. The service guard assembly (1) for an environmental sanitation sweeper truck according to claim 8, wherein the first distance (L1) is two fifths of the longitudinal length of the tank (2) and the first predetermined angle is greater than or equal to 44 ° and less than 50 °.

10. A sanitation sweeper truck characterized by comprising a service guard assembly (1) for a sanitation sweeper truck as claimed in any one of claims 1 to 9.

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