Protective canopy, floor processing machine, and method for changing the position of a protective canopy

Abstract

The present invention relates to a protective canopy, which comprises a canopy body, a canopy base, a first link and a second link for connecting the canopy body to the canopy base. The canopy body is capable of switching between a first position and a second position. Each of the first link and the second link is pivotally connected to the canopy body and the canopy base respectively, and the pivot axes formed at the pivot connection positions between each of the first link and the second link and each of the canopy body and the canopy base are parallel to each other, so that by manipulating the first link and / or the second link and / or the canopy body, the canopy body can switch between the first position and the second position relative to the canopy base.

Description

Technical Field

[0001] The present invention relates to a protective canopy, which includes a canopy body, a canopy base, and a first link and a second link for connecting the canopy body to the canopy base. The canopy body can be switched between a first position and a second position. Each of the first link and the second link is pivotally connected to the canopy body and the canopy base respectively, and the pivot axes formed at the pivot connection positions between each of the first link and the second link and each of the canopy body and the canopy base are parallel to each other, so that by manipulating the first link and / or the second link and / or the canopy body, the canopy body can be switched between the first position and the second position relative to the canopy base. The present invention further relates to a floor working machine, which includes an operator platform and a protective canopy that can be switched between a first position and a second position. The protective canopy is arranged corresponding to the operator platform for protecting the operator. The present invention also relates to a method for changing the position of the protective canopy of a floor working machine, including the steps of extending and contracting the canopy body of the protective canopy relative to the operator platform of the floor working machine. Background Art

[0002] Regarding construction machinery, such as floor working machines, a protective canopy is provided above the operator platform to protect the operator from sunlight or rain. In the prior art, the position change of the protective canopy on construction machinery is achieved through bearing mechanisms, such as sliding bearings and rolling contact bearings. The rolling contact bearing is also known as a ball screw. However, the position change structure achieved by the sliding bearing makes the protective canopy very frequently and easily jammed during the position change process, and a considerable amount of force is required to move the protective canopy. Although the force required for the position change structure achieved by the rolling contact bearing is small, the cost of the rolling contact bearing is very high.

[0003] Therefore, there is a great need for a protective canopy position change structure that can easily change the position of the protective canopy with a small force and at a low cost. Summary of the Invention

[0004] The object of the present invention is to improve the protective canopy as described above, so that the position of the canopy body can be better changed with a smaller force and at a lower cost compared to the canopies of construction machinery in the prior art. In addition, the object of the present invention is to provide a floor working machine having such a protective canopy to better protect the operator of the machine.

[0005] The object according to the present invention is achieved by the following features of the protective canopy.

[0006] The protective canopy includes a canopy body, a canopy base, a first connecting rod and a second connecting rod for connecting the canopy body to the canopy base. The canopy body can be switched between a first position and a second position. The canopy base is stationary. Each of the first connecting rod and the second connecting rod is pivotally connected to the canopy body and the canopy base respectively, and the pivot axes formed at the pivot connection positions between each of the first connecting rod and the second connecting rod and each of the canopy body and the canopy base are parallel to each other, so that by manipulating the first connecting rod and / or the second connecting rod and / or the canopy body, the canopy body can be switched between the first position and the second position relative to the canopy base.

[0007] For the protective canopy according to the present invention, the first connecting rod, the second connecting rod, the canopy body and the canopy base form a four-bar linkage mechanism, which enables the position of the canopy body to be changed better with less force and lower cost compared to the canopies of construction machinery in the prior art.

[0008] Different from the protective canopy described in the background art of the present invention, the protective canopy according to the present invention has a first position and a second position, and the switching of the protective canopy according to the present invention between the first position and the second position is achieved through a four-bar linkage mechanism, which is formed by the canopy body, the canopy base, the first connecting rod and the second connecting rod of the protective canopy together. Specifically, the canopy body and the canopy base of the protective canopy are connected by the first connecting rod and the second connecting rod, wherein the first connecting rod is pivotally connected to each of the canopy body and the canopy base respectively, and the second connecting rod is pivotally connected to each of the canopy body and the canopy base respectively, and the pivot axes at the connection points between the first connecting rod and each of the canopy body and the canopy base are parallel to the pivot axes at the connection points between the second connecting rod and each of the canopy body and the canopy base respectively, so that the canopy body, the canopy base, the first connecting rod and the second connecting rod jointly form a manipulable four-bar linkage mechanism. By manipulating at least one of the canopy body, the first connecting rod and the second connecting rod, the canopy body can be switched between the first position and the second position relative to the canopy base.

[0009] The advantage of this is that, compared to the prior art, the protective canopy of the present invention has no intermediate position, only a transportation (leftmost) position and an operation (rightmost) position, but the position of the protective canopy according to the present invention can be changed better with less force and lower cost than the protective canopies of construction machinery in the prior art.

[0010] For the protective canopy according to the present invention, the protective canopy further includes at least one manipulation member, which can drive at least one of the first connecting rod, the second connecting rod and the canopy body. By manipulating the manipulation member, the canopy body can be switched between the first position and the second position relative to the canopy base.

[0011] According to the protective canopy of the present invention, the at least one actuating member is attached to the first link and / or the second link, and the at least one actuating member and the corresponding link form a lever structure having a pivot point, and the at least one actuating member is connected to the corresponding link at the pivot point. This has the advantage of providing an effortless and cost-effective way to switch the canopy body between a first position and a second position. In a preferred embodiment, the actuating member is connected to one of the first link and the second link, and the actuating member and the corresponding link together form a lever structure, wherein the pivot connection point formed by the pivot connection of the corresponding link to one of the canopy body and the canopy base serves as the fulcrum of the lever structure. Alternatively, the at least one actuating member is respectively connected to the first link and the second link, and the actuating member and the link to which the actuating member is connected form a lever structure.

[0012] According to the protective canopy of the present invention, the at least one actuating member includes a connecting section and a force-applying section. The connecting section is connected to the first link and / or the second link, and the force-applying section is connected to the connecting section. The connecting section of the at least one actuating member is located on the line connecting the two pivot connection points of the link to which the at least one actuating member is attached, and the angle between the force-applying section and the connecting section is 100 - 150°. Here, the case where the actuating member is connected to the second link will be described. Specifically, the second link has a first pivot connection point pivotally connected to the canopy body and a second pivot connection point pivotally connected to the canopy base. The line connecting the first pivot connection point and the second pivot connection point is arranged at an angle with the force-applying section of the actuating member, and the angle range is 100 - 150°. In a preferred embodiment, the angle between the force-applying section and the connecting section is 120 - 130°. In some more preferred embodiments, the angle is 120°, 125° or 130°. This has the advantage that within this angle range, a relatively small force is required to drive the corresponding link to which the actuating member is connected.

[0013] According to the protective canopy of the present invention, the at least one actuating member is integrated with the first link and / or the second link. In a preferred embodiment, the actuating member is integrated with one of the first link and the second link. This has the advantage that the actuating member and the corresponding link to which the actuating member is connected can be integrally manufactured, installed and used, which not only provides better structural strength, but also reduces the number of required components, facilitates installation and use, and reduces costs.

[0014] Alternatively, the at least one actuating member is a hydraulic, electric or pneumatic drive device which acts directly on at least one of the first link, the second link and the canopy body, or drives at least one of the first link, the second link and the canopy body through an indirect drive mechanism. In another alternative embodiment, the actuating member forms a new pivot-related structure with the first link and / or the second link through an additional pivot connection, and the pivot-related structure enables the first link and / or the second link to be driven to move.

[0015] For the protective canopy according to the present invention, both the first link and the second link are bent outwards. Such an advantage is that it is beneficial to protect the movement of the canopy between the first position and the second position, and is beneficial to the transmission of the driving force introduced by the actuating member between the link and the canopy body.

[0016] For the protective canopy according to the present invention, the canopy body abuts against the canopy base at both the first position and the second position of the canopy body. This has the advantage that the canopy body can stop at its required position by abutting against the canopy base without the need for additional stop elements.

[0017] For the protective canopy according to the present invention, the canopy body is provided with a connecting member which moves together with the canopy body, and the first link and the second link are respectively pivotally connected to the connecting member. In a preferred embodiment, the connecting member is integrated with the canopy body. Alternatively, the connecting member is connected to the canopy body by existing known mechanical connection means such as welding or bolt connection.

[0018] For the protective canopy according to the present invention, the connecting member abuts against the canopy base at both the first position and the second position of the canopy body.

[0019] Alternatively, the first link is pivotally connected to the canopy base through a first shaft, and the second link is pivotally connected to the canopy base through a second shaft. The connecting member abuts against the first shaft at the first position and abuts against the second shaft at the second position. In a preferred embodiment, an opening is provided at the bottom edge of the connecting member, and the first shaft or the second shaft is respectively received in the opening at the first position and the second position of the canopy body.

[0020] For the protective canopy according to the present invention, a pair of first links and a pair of second links are respectively provided on two opposite sides of the canopy base and the connecting member.

[0021] According to the protective canopy of the present invention, the protective canopy further includes a locking device for locking the canopy body at a first position and a second position of the canopy body. In a preferred embodiment, the locking device is provided on the canopy body and moves together with the canopy body, and two locking holes are provided on the canopy base for cooperating with the locking device. Alternatively, the locking device is arranged on the canopy base, and the locking holes for cooperating with the locking device are provided on the canopy body.

[0022] According to the protective canopy of the present invention, the locking device is a spring-loaded zip fastener, which includes a housing, a pin and a spring element. The pin can move between an original position and a pulled-out position. When the pin is in the original position, the spring element is not compressed. When the pin is in the pulled-out position, the spring element is compressed. Specifically, the housing is provided on the canopy body, the pin is arranged in the housing, the spring is arranged in the housing to provide a load force to the pin, and the pin has an original position (also called the closed position) and a pulled-out position (also called the open position). At the pulled-out position, the pin is held stationary on the housing against the load of the spring element, and when the pin is released from the pulled-out position, the pin can return to its original position under the action of the spring element.

[0023] When the canopy body reaches its first position and second position, the pin of the locking device is in its original position and inserted into the corresponding locking hole, so that the canopy body is locked at its first position and second position. In a preferred embodiment, at least one radial stop is provided on the pin. By rotating the pin so that the stop engages with the corresponding part in the housing, the pin can be held in the pulled-out position. The pin can be pulled out along its longitudinal axis direction and then rotated around the longitudinal axis so that the stop of the pin cooperates with the corresponding part in the housing, such as a positioning part provided at the end of the housing or inside the housing, so that the pin is positioned in its pulled-out position and the canopy body can be unlocked. Therefore, before moving the canopy body from the first position to the second position and from the second position to the first position, the operator can switch the pin of the locking device from its original position to its pulled-out position. At this time, the canopy body can be freely transferred from its first operating position to the second transport position, or vice versa.

[0024] According to the protective canopy of the present invention, two switching elements are provided on the canopy base, and the two switching elements are arranged close to the movement track of the pin. The movement track of the pin is the track when the canopy body moves from the first position to the second position and vice versa. During the movement of the canopy body from the first position to the second position and from the second position to the first position, the two switching elements respectively release the pin from its pulled-out position.

[0025] According to the protective canopy of the present invention, the pin has wings that extend radially from the end of the pin. When the wings contact the switching element, the switching element triggers the pin to rotate, causing the pin to be released from the pulled-out position. During the movement of the canopy body from the first position to the second position and from the second position to the first position, the pin can be toggled and rotated through the engagement between the wings and the corresponding switching element. Therefore, when the canopy body reaches the final position, the pin can be released from its pulled-out position.

[0026] As long as the canopy body leaves its final position, the wings of the locking device must pass through these two switching elements respectively. The corresponding switching element will engage with the wings of the pin of the locking device and cause the pin to rotate, resulting in the pin being able to be released from its pulled-out position when the protective canopy reaches its final position, namely the first operating position and the second transportation position. According to the protective canopy of the present invention, before the protective canopy reaches the final position, the spring element cannot instantaneously push out the pin, that is, there is no corresponding hole in the intermediate position for the pin to enter. Therefore, only when reaching the final position can the spring push the pin out and into the corresponding locking hole, and close the zip fastener, that is, fix the canopy body in the final position.

[0027] According to the protective canopy of the present invention, in a preferred embodiment, the switching element is an L-shaped flag, and at least the vertical part of the L-shaped flag will contact the wings of the pin of the locking device during the movement of the canopy body, so that the pin is driven to rotate and then can be released from its pulled-out position when the canopy body reaches the final position.

[0028] According to the protective canopy of the present invention, the first position is the operating position where the canopy body is extended, and relative to the extended operating position, the second position is the transportation position where the canopy body is retracted.

[0029] The present invention also provides a ground processing machine, which includes an operator platform and the protective canopy as described above. The protective canopy is arranged corresponding to the operator platform to protect the operator.

[0030] According to the ground processing machine of the present invention, in the lateral direction of the ground processing machine, the canopy body of the protective canopy can be switched between the first position and the second position relative to the operator platform.

[0031] According to the present invention, for a ground working machine, the first position is an extended operating position where the canopy body of the protective canopy protrudes from the lateral outside of the frame of the ground working machine, and the second position is a retracted transport position where the canopy body of the protective canopy does not protrude beyond the footprint occupied by the ground working machine. That is to say, when the canopy body of the protective canopy is extended to the operating position, the canopy body of the protective canopy protrudes from the lateral outside of the frame of the ground working machine, and when the canopy body is retracted to the transport position, the canopy body of the protective canopy does not protrude beyond the footprint occupied by the ground working machine. The advantage of this is that the protective canopy of the ground working machine according to the present invention can be transferred from the transport position where it does not protrude beyond the machine's footprint to the operating position where it protrudes beyond the lateral outside of the machine frame of the ground working machine (also known as the zero-extension side, which is the right side of the machine in a preferred embodiment), so as to better protect the operator from sunlight and rain. The protective canopy of the ground working machine has no intermediate position, only the transport (leftmost) and operating (rightmost) positions. The advantage of this is that it provides an effortless and cost-effective way to switch the canopy body between the first position and the second position of the canopy body.

[0032] According to the present invention, for a ground working machine, the ground working machine is a road milling machine, a recycling machine, a stabilizer or an open-pit mining machine.

[0033] The present invention also relates to a method for changing the position of the protective canopy of a ground working machine, and the above-mentioned protective canopy is arranged corresponding to the operator platform for protecting the operator. The method includes the steps of extending and retracting the canopy body of the protective canopy relative to the operator platform of the ground working machine. Description of the Drawings

[0034] The embodiments of the present invention will be described in detail below with the aid of the drawings.

[0035] Wherein:

[0036] Figure 1 A perspective view of an embodiment of the operator platform of a ground working machine with a protective canopy is shown, wherein the protective canopy is in a state of being extended to the operating position.

[0037] Figure 2 Shown according to Figure 1 A perspective view of an embodiment of the operator platform is shown, wherein the protective canopy is in a state of being retracted to the transport position.

[0038] Figure 3 A detail of an embodiment of the protective canopy according to the present invention is shown, wherein the protective canopy is in a state of being extended to the operating position.

[0039] Figure 4Details of an embodiment of a protective canopy according to the present invention are shown, wherein the protective canopy is in a state of switching from an extended operating position to a retracted transport position.

[0040] Figure 5 Details of an embodiment of a protective canopy according to the present invention are shown, wherein the protective canopy is in a retracted transport position state.

[0041] Figure 6 Details of the protective canopy are shown as viewed from the bottom of the base, wherein a first link and a second link located on the other side of the canopy base relative to the operating member are shown.

[0042] Figure 7 Details of the locking device are shown in a cross-sectional view, wherein the pin of the locking device is in its original position.

[0043] Figure 8 Details of the locking device are shown in a cross-sectional view, wherein the pin of the locking device is in its pulled-out position. Detailed Description

[0044] Figure 1 A perspective view of an embodiment of an operator platform of a surface processing machine having a protective canopy is shown, wherein the protective canopy is in an extended operating position state. Figure 2 Shows according to Figure 1 A perspective view of an embodiment of the operator platform, wherein the protective canopy is in a retracted transport position state. In this embodiment, the surface processing machine is a milling machine, a recycling machine, a stabilizer or an open-pit mining machine.

[0045] As Figure 1-2 shown, the surface processing machine has an operator platform 2 and a protective canopy 1, and the protective canopy 1 is connected to the operator platform 2 of the surface processing machine through a support member. For example, as Figure 1 and Figure 2 shown, a support column 11 is provided in a substantially vertical direction of the machine. The support member is part of the base of the protective canopy 1 or is provided independently of the base of the protective canopy 1.

[0046] As Figure 1-2As shown, the protective canopy 1 has a canopy body 3, and the canopy body 3 has a first position and a second position. Among them, the first position is the extended operating position, and the canopy body 3 of the protective canopy 1 extends out from the lateral outer side of the frame of the ground processing machine. The second position is the retracted transportation position, and the canopy body 3 of the protective canopy 1 does not extend beyond the footprint of the ground processing machine. In the lateral horizontal direction of the ground processing machine, the protective canopy 1 can be switched between the extended operating position and the retracted transportation position relative to the operator platform 2, so as to protect the operators of the ground processing machine from sunlight or rain. In this embodiment, when the canopy body 3 of the protective canopy 1 is extended to the operating position, it extends out from the lateral side outer of the frame of the ground processing machine. When the canopy body 3 of the protective canopy 1 is retracted to the transportation position, it does not protrude beyond the footprint of the ground processing machine. The protective canopy 1 of the ground processing machine has no intermediate position, only the transportation position (the leftmost) and the operating position (the rightmost), but the position of the protective canopy according to the present invention can be changed better than the protective canopies of existing construction machinery with less force and lower cost.

[0047] As Figure 1-2 shown, the protective canopy 1 further includes a stationary canopy base 4 and a first link 5 and a second link 6 for connecting the canopy body 3 and the canopy base 4. In this embodiment, the first link 5, the second link 6, the canopy body 3 and the canopy base 4 form a four-bar linkage mechanism. The switching of the protective canopy 1 according to the present invention between the first operating position and the second transportation position is realized by the four-bar linkage mechanism. Specifically, the first link 5 is pivotally connected to each of the canopy body 3 and the canopy base 4 respectively, and the second link 6 is also pivotally connected to each of the canopy body 3 and the canopy base 4 respectively. And the pivot axes of the connection points of the first link 5 with each of the canopy body 3 and the canopy base 4, and the pivot axes of the connection points of the second link 6 with each of the canopy body 3 and the canopy base 4 are parallel to each other. In this way, the canopy body 3, the canopy base 4, the first link 5 and the second link 6 together form a manipulable four-bar linkage mechanism.

[0048] As Figure 1-2 shown, both the first link 5 and the second link 6 are bent outward respectively, and the protective canopy 1 further includes a manipulation member integrated with the second link 6. The manipulation member and the second link 6 form a lever structure having a pivot point, and they are connected at the pivot point. Specifically, the manipulation member includes a connection section 12 connected to the second link 6 and a force application section 13 connected to the connection section 12.

[0049] As Figure 1-2As shown, a connecting member 9 that moves together with the canopy body 3 is provided on the canopy body 3, and the first link 5 and the second link 6 are respectively pivotally connected to the connecting member 9. In this embodiment, the connecting member 9 is integrated with the canopy body 3. The first link 5 is pivotally connected to the canopy base 4 through the first shaft 18, and the second link 6 is pivotally connected to the canopy base 4 through the second shaft 19. The connecting member 9 abuts against the first shaft 18 at the first position and abuts against the second shaft 19 at the second position. In this embodiment, an opening 17 is provided at the bottom edge of the connecting member 9, and each of the first shaft 18 and the second shaft 19 is received in the opening 17 at the first position and the second position of the canopy body 3 respectively. In addition, in this embodiment, the canopy base 4 includes a base member 10, and the first link 5 and the second link 6 are respectively disposed on opposite sides of the base member 10 and the connecting member 9.

[0050] Figure 3 Details of an embodiment of a protective canopy according to the present invention are shown, in which the protective canopy is in a state of being in an extended operating position. Figure 4 Details of an embodiment of a protective canopy according to the present invention are shown, in which the protective canopy is in a state of switching from an extended operating position to a retracted transport position. Figure 5 Details of an embodiment of a protective canopy according to the present invention are shown, in which the protective canopy is in a state of being in a retracted transport position. As Figure 3-5 shown, the canopy body 3 of the protective canopy 1 can be switched from an extended operating position to a retracted transport position, and vice versa. This is achieved by a four-bar linkage mechanism that can be manipulated, which consists of the canopy body 3, the canopy base 4, the first link 5, and the second link 6. The first link 5 is pivotally connected to each of the canopy body 3 and the canopy base 4 respectively, while the second link 6 is also pivotally connected to each of the canopy body 3 and the canopy base 4 respectively. By manipulating at least one of the canopy body 3, the first link 5, and the second link 6, the canopy can be switched between an extended operating position and a retracted transport position relative to the canopy base 4.

[0051] As Figure 3 shown, the connecting section 12 of the operating member is located on the line connecting the two pivot connection points of the second link 6, and the angle between the force application section 13 and the connecting section 12 is approximately 130°. In another embodiment, this angle can also be 100°, 120°, 125°, 135°, or 150°. The operator can hold the force application section 13 of the operating member by hand and then apply force to the force application section 13 to drive the second link 6, and the second link 6 in turn drives the first link 5 and the canopy body 3 to move, finally realizing the movement of the canopy body 3 from the operating position to the transport position or from the transport position to the operating position.

[0052] As Figure 3-6As shown, two first linkages 5, 5a are disposed on opposite sides of the base member 10 and the connecting member 9, and two second linkages 6, 6a are disposed on opposite sides of the base member 10 and the connecting member 9. Figure 3-5 The first linkage 5 and the second linkage 6 are shown on one side of the canopy body 3 and the canopy base 4. Figure 6 The first linkage 5a and the second linkage 6a are shown on the other side of the canopy body 3 and the canopy base 4.

[0053] As Figure 1-6 As shown, the connecting member 9 includes a first upper side 21 and a second upper side 22 parallel to the first upper side 21. The first linkage 5 and the second linkage 6 are pivotally connected to the first upper side 21, and the first linkage 5a and the second linkage 6a are pivotally connected to the second upper side 22. The base member 10 includes a first lower side 23, a second lower side 24 parallel to the first lower side, and a top plate portion 25 connecting the first lower side and the second lower side. The second ends of one first linkage 5 and one second linkage 6 are pivotally connected to the first lower side 23, and the second ends of the other first linkage 5a and the other second linkage 6a are pivotally connected to the second lower side 24.

[0054] As Figure 1-2 shown in the embodiment, Figure 3-5 In the embodiment shown, the protective canopy 1 further includes a locking device 14 for locking the canopy body 3 in its first and second positions. In a preferred embodiment, the locking device 14 is provided on the canopy body 3 and moves together with the canopy body 3. Two locking holes 7, 7a are provided on the canopy base 4 for cooperating with the locking device 14 when the canopy body 3 reaches its first and second positions, respectively. Alternatively, the locking device 14 is provided on the canopy base 4, and the locking holes for cooperating with the locking device 14 are provided on the canopy body 3. Preferably, the locking holes are elongated holes.

[0055] Figure 7 Details of the locking device are shown in a cross-sectional view, where the pin of the locking device is in its original position. Figure 8 Details of the locking device are shown in a cross-sectional view, where the pin of the locking device is in its withdrawn position. As Figure 7-8As shown, the locking device 14 is a spring-loaded zip fastener, which includes a housing 26, a pin 27 and a spring element 28. The housing 26 can be fixed to the roof body 3. The pin 27 is arranged in the housing 26, and the spring 28 is arranged in the housing 26 to provide a load force to the pin 27. The pin 27 can move between an original position (also referred to as the closed position) and a pulled-out position (also referred to as the open position). When the pin 27 is pulled outwards, the pin moves in the housing 26 and the spring element 28 is compressed. In the case where the pin 27 is pulled and the stop 29 moves along the receiving groove 30 in the housing to a specific position, the pin 27 can be rotated so that at least one radial stop 29 provided on the pin 27 is received in a corresponding part, such as a positioning part (not shown in the figure) provided on the end face of the housing 26. In this way, the pin is held in the pulled-out position and cannot return to the original position. If the pin is rotated so that the radial stop 29 moves away from the positioning part, the force of the spring element 28 causes the pin 27 to return to the original position. That is to say, before moving the roof from the first position to the second position and from the second position to the first position, the operator can switch the pin 27 of the locking device 14 from its original position to its pulled-out position. At this time, the roof body 3 can freely transfer from its first operating position to its second transport position, or vice versa.

[0056] In the pulled-out position, the pin 27 is held on the housing 26 under the action of the spring element 28. If the pin 27 is rotated and its stop 29 is moved to the opening position of the receiving groove 30 at the end of the housing, the pin 27 can return to its original position under the action of the spring element 28. When the roof body reaches its first position and second position, the pin 27 of the locking device is in its original position and inserted into the corresponding locking hole, so that the roof body is locked in its first position and second position.

[0057] As Figure 3-5 shown, two switching elements 15, 16 are arranged on the roof base, and the two switching elements are arranged close to the movement track of the pin. The movement track of the pin refers to the track when the roof body moves from the first position to the second position and vice versa. During the movement of the roof body 3 from the first position to the second position and from the second position to the first position, the two switching elements 15, 16 respectively release the pin 27 from its pulled-out position.

[0058] As Figure 3-5 and Figure 7As shown, the pin 27 has a wing portion 31 that extends radially from the end of the pin. When the wing portion contacts the switching element, it triggers the rotation of the pin, causing the pin to be released from the pulled-out position. During the movement of the canopy body 3 from the first position to the second position and from the second position to the first position, the pin 27 can be toggled and rotated through the engagement of the wing portion 31 and the corresponding switching elements 15, 16. Therefore, when the protective canopy reaches the final position, the pin 27 can be released from its pulled-out position. According to the protective canopy of the present invention, before the protective canopy reaches the final position, the spring element 28 cannot instantaneously push out the pin 27, that is, there is no corresponding hole for the pin 27 to enter at the intermediate position. Therefore, only when reaching the final position can the spring 28 push out the pin 27 and insert it into the corresponding locking hole, and close the zipper, that is, fix the canopy body 3 in the final position.

[0059] As Figure 3-5 shown, the switching elements 15, 16 are L-shaped flags, and at least the vertical portion of the L-shaped flag will contact the wing portion 31 of the pin 27 of the locking device 14 during the movement of the canopy body 3. In this way, the pin 27 is driven to rotate and can then be released from its pulled-out position when the canopy body 3 reaches the final position.

Claims

1. A protective canopy (1), characterized in that, The protective canopy (1) includes: a canopy body (3) capable of switching between a first position and a second position, a canopy base (4), and a first link (5) and a second link (6) for connecting the canopy body (3) to the canopy base (4), each of the first link (5) and the second link (6) is pivotally connected to the canopy body (3) and the canopy base (4) respectively, and the pivot axes formed at the pivot connection positions between each of the first link and the second link and each of the canopy body (3) and the canopy base (4) are parallel to each other, so that by manipulating the first link and / or the second link and / or the canopy body (3), the canopy body (3) can switch between the first position and the second position relative to the canopy base (4), and the canopy body (3) abuts against the canopy base (4) both at the first position and the second position of the canopy body (3).

2. The protective canopy (1) according to claim 1, characterized in that the first link (5), the second link (6), the canopy body (3) and the canopy base (4) form a four-bar linkage mechanism.

3. The protective canopy (1) according to claim 1, characterized in that the protective canopy (1) further includes at least one operating member (8), and the at least one operating member (8) can drive at least one of the first link (5), the second link (6) and the canopy body (3), and by manipulating the operating member (8), the canopy body (3) can switch between the first position and the second position relative to the canopy base (4).

4. The protective canopy (1) according to claim 3, characterized in that the at least one operating member (8) is attached to the first link (5) and / or the second link (6), and the at least one operating member (8) and the corresponding link form a lever structure with a pivot point, and the at least one operating member (8) is connected to the corresponding link at the pivot point.

5. The protective canopy (1) according to claim 4, characterized in that the at least one operating member (8) includes a connecting section (12) and a force-applying section (13), the connecting section (12) is connected to the first link and / or the second link (6), the force-applying section (13) is connected to the connecting section (12), the connecting section (12) of the at least one operating member (8) is located on the line (L) connecting the two pivot connection points of the link to which the at least one operating member (8) is attached, and the angle (α) between the force-applying section (13) and the connecting section (12) is 100 - 150°.

6. The protective canopy (1) according to claim 5, characterized in that the angle (α) between the force-applying section (13) and the connecting section (12) is 120 - 130°.

7. The protective canopy (1) according to claim 4, characterized in that the at least one operating member (8) is integrated with the first link and / or the second link.

8. The protective canopy (1) according to claim 3, characterized in that The at least one actuating member (8) is a hydraulically, electrically or pneumatically driven device which acts directly on at least one of the first link (5), the second link (6) and the awning body (3), or drives at least one of the first link (5), the second link (6) and the awning body (3) through an indirect drive mechanism.

9. The protective awning (1) according to any one of claims 1 - 8, characterized in that Both the first link (5) and the second link (6) are bent outwards.

10. The protective awning (1) according to any one of claims 1 - 8, characterized in that The awning body (3) is provided with a connecting member (9) which moves together with the awning body (3), and the first link (5) and the second link (6) are pivotally connected to the connecting member (9) respectively.

11. The protective awning (1) according to claim 10, characterized in that The connecting member (9) abuts against the awning base (4) both at the first position and the second position of the awning body (3).

12. The protective awning (1) according to claim 11, characterized in that The first link (5) is pivotally connected to the awning base (4) through a first shaft (18), and the second link (6) is pivotally connected to the awning base (4) through a second shaft (19). The connecting member (9) abuts against the first shaft (18) at the first position and abuts against the second shaft (19) at the second position.

13. The protective awning (1) according to claim 12, characterized in that The bottom edge of the connecting member (9) is provided with an opening (17), and the first shaft (18) or the second shaft (19) is received in the opening (17) respectively at the first position and the second position of the awning body.

14. The protective awning (1) according to claim 10, characterized in that A pair of first links (5) and a pair of second links (6) are respectively arranged on two opposite sides of the awning base (4) and the connecting member (9).

15. The protective awning (1) according to any one of claims 1 - 8, characterized in that The protective awning (1) further includes a locking device (14) for locking the awning body (3) at the first position and the second position of the awning body.

16. The protective awning (1) according to claim 15, characterized in that The locking device (14) is arranged on the awning body (3) and moves together with the awning body (3).

17. The protective awning (1) according to claim 16, characterized in that Two locking holes (7, 7a) are arranged on the awning base (4) for cooperating with the locking device (14).

18. The protective awning (1) according to claim 15, characterized in that The locking device (14) includes a housing (26), a pin (27) and a spring element (28). The pin (27) can move between a home position and a pulled - out position. When the pin (27) is in the home position, the spring element (28) is not compressed, and when the pin (27) is in the pulled - out position, the spring element (28) is compressed.

19. The protective canopy (1) according to claim 18, characterized in that the pin (27) has a stop (29) provided thereon, and by rotating the pin (27), the stop (29) is engaged with a corresponding part in the housing, and the pin (27) can be held in the pulled-out position.

20. The protective canopy (1) according to claim 18, characterized in that two switching elements (15, 16) are provided on the canopy base (4), and the two switching elements (15, 16) are arranged close to the movement track of the pin (27), and the movement track of the pin (27) is the track when the canopy body (3) moves from the first position to the second position and vice versa.

21. The protective canopy (1) according to claim 20, characterized in that the pin (27) has a wing part (31) that extends radially from the end of the pin (27), and when the wing part (31) contacts the switching elements (15, 16), the switching elements (15, 16) trigger the rotation of the pin (27) so that the pin (27) is released from the pulled-out position.

22. The protective canopy (1) according to any one of claims 1-8, characterized in that the first position is the operating position where the canopy body (3) is extended, and relative to the extended operating position, the second position is the transport position where the canopy body (3) is retracted.

23. A ground processing machine, characterized in that the ground processing machine includes an operator platform and the protective canopy (1) according to any one of claims 1-22, and the protective canopy (1) is arranged corresponding to the operator platform for protecting the operator.

24. The ground processing machine according to claim 23, characterized in that in the lateral horizontal direction of the ground processing machine, the canopy body (3) of the protective canopy (1) can be switched between a first position and a second position relative to the operator platform.

25. The ground processing machine according to claim 24, characterized in that the first position is the extended operating position, at which the canopy body (3) of the protective canopy (1) protrudes from the lateral outside of the frame of the ground processing machine, and the second position is the retracted transport position, at which the canopy body (3) of the protective canopy (1) does not protrude beyond the area occupied by the ground processing machine.

26. The ground processing machine according to any one of claims 23-25, characterized in that the ground processing machine is a road milling machine, a recycling machine, a stabilizer or an open-pit mining machine.

27. A method for changing the position of the protective canopy (1) of a ground processing machine, characterized in that the protective canopy (1) is the protective canopy (1) according to any one of claims 1-22, and the protective canopy (1) is arranged corresponding to the operator platform for protecting the operator, the method includes the steps of extending and retracting the canopy body (3) of the protective canopy (1) relative to the operator platform of the ground processing machine.

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