Bucket wheel machine anti-collision buffer type baffle structure

Abstract

The utility model provides a kind of bucket wheel machine anti-collision buffer type baffle structure, it is related to bucket wheel machine technical field, including plate body, plate body is set in the width direction of cantilever beam one side;Energy-absorbing device two ends are connected with plate body and cantilever beam respectively, energy-absorbing device is in being suitable for filling compressed air pressure chamber is set, part of energy-absorbing device is suitable when plate body moves towards cantilever beam collapse;Buffer is set in pressure chamber and is connected with the inner wall of pressure chamber away from plate body;Pressure release piece is connected with energy-absorbing device, pressure release piece is suitable when the pressure in pressure chamber exceeds threshold value to make pressure chamber and outside communicate.The utility model is by the joint action of pressure chamber and buffer to effectively absorb the impact force that cantilever beam is received, reduces the cantilever beam and bucket wheel machine damage and maintenance cost caused by collision.

Description

Technical Field

[0001] This utility model relates to the field of bucket wheel excavator technology, and more specifically, to a collision-resistant buffer baffle structure for bucket wheel excavators. Background Technology

[0002] Bucket wheel excavators, as large-scale continuous operation equipment, are mainly used in the loading and unloading of bulk materials such as coal and ore. The cantilever beam of the bucket wheel excavator can rotate relative to the excavator body. When the limiting mechanism of the cantilever beam fails, it may collide with the gate column. In addition, operator error may cause the cantilever beam to collide with other objects. In the existing technology, metal baffles are installed on both sides of the cantilever beam to protect it. However, the rigid contact between the metal baffle and the cantilever beam will cause the collision energy to be directly transferred to the cantilever beam, resulting in the cantilever beam receiving a relatively large amount of collision energy. Utility Model Content

[0003] The purpose of this utility model is to provide a collision-resistant buffer baffle structure for bucket wheel excavators to improve the aforementioned problems. To achieve this purpose, the technical solution adopted by this utility model is as follows:

[0004] This application provides a collision-resistant buffer baffle structure for bucket wheel excavators, comprising: a plate body disposed on one side of a cantilever beam in the width direction; an energy-absorbing device disposed between the plate body and the cantilever beam, with both ends connected to the plate body and the cantilever beam respectively, the energy-absorbing device having a pressure chamber suitable for filling with compressed air, and a portion of the energy-absorbing device being adapted to collapse when the plate body moves toward the cantilever beam; a buffer member disposed within the pressure chamber and connected to the inner wall of the pressure chamber away from the plate body; and a pressure-relieving member connected to the energy-absorbing device, the pressure-relieving member being adapted to connect the pressure chamber to the outside when the pressure within the pressure chamber exceeds a threshold.

[0005] According to some embodiments of the present invention, the energy-absorbing device includes an energy-absorbing box, the energy-absorbing box is provided with a pressure chamber, the energy-absorbing box is provided with an air outlet suitable for communicating the pressure chamber with the outside, and the pressure-relieving component includes a pressure plate, the pressure plate is rotatably connected to the energy-absorbing box, and the pressure plate is adapted to rotate and make the air outlet communicate with the outside when the pressure in the pressure chamber exceeds a threshold.

[0006] According to some embodiments of the present invention, the pressure relief component further includes a first spring, which is disposed on the side of the pressure plate away from the energy absorption box, and the first spring is adapted to drive the pressure plate to rotate to close the air outlet.

[0007] According to some embodiments of the present invention, the energy-absorbing device further includes a hydraulic cylinder, which is connected to the cantilever beam, and the piston rod of the hydraulic cylinder is connected to the energy-absorbing box.

[0008] According to some embodiments of the present invention, the piston rod is provided with an installation channel, one end of the installation channel is open towards the energy absorption box, the other end of the installation channel is connected to the outside, the first spring is provided in the installation channel, and at least a portion of the pressure plate is rotatably disposed in the installation channel.

[0009] According to some embodiments of the present invention, the mounting channel includes a first channel segment extending axially along the piston rod, one end of the first channel segment being open toward the energy-absorbing box, and the other end of the first channel segment being connected to a second channel segment extending radially along the piston rod, the second channel segment being connected to the outside.

[0010] According to some embodiments of the present invention, the cross-sectional area of ​​the buffer is S1, and the cross-sectional area of ​​the pressure chamber near the inner wall of the cantilever beam is S2, satisfying: 0.8≤S1 / S2≤0.9, and the buffer is provided with a connecting hole suitable for connecting the pressure chamber with the air outlet.

[0011] According to some embodiments of the present invention, the buffer element is constructed of a polyurethane elastomer.

[0012] According to some embodiments of the present invention, baffle structures are provided on both sides of the cantilever beam in the width direction, and the cantilever beam is provided with a through sliding hole in the width direction. Part of the sliding rod is slidably disposed in the sliding hole, and both ends of the sliding rod protrude out of the cantilever beam and are respectively connected to the two baffle structures.

[0013] According to some embodiments of the present invention, the slide bar is fitted with two second springs, which are located on both sides of the cantilever beam. One end of each of the two second springs is adapted to cooperate with the cantilever beam, and the other end of each of the two second springs is adapted to cooperate with the slide bar.

[0014] The beneficial effects of this utility model are as follows:

[0015] The pressure chamber inside the energy-absorbing device of this invention is suitable for initially absorbing and buffering the impact force on the cantilever beam, and the buffer component inside the pressure chamber is suitable for further absorbing and buffering the impact force on the cantilever beam. Thus, through the combined action of the pressure chamber and the buffer component, the impact force on the cantilever beam can be effectively absorbed, effectively protecting the structural safety of the cantilever beam and the bucket wheel excavator, reducing damage to the bucket wheel excavator and maintenance costs caused by collisions. At the same time, the setting of the pressure relief component prevents the energy-absorbing device from being damaged or even exploding due to excessive pressure in the pressure chamber, and ensures that the pressure value in the pressure chamber can be kept at the maximum preset value, so that the energy-absorbing device can continuously and effectively absorb the impact force on the cantilever beam, further protecting the structural safety of the cantilever beam and the bucket wheel excavator.

[0016] Other features and advantages of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing embodiments of the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a cross-sectional view of the baffle structure and cantilever beam of this utility model.

[0019] Figure 2 for Figure 1 A magnified view of A in the center circle;

[0020] Figure 3 This is a schematic diagram of the cantilever beam and the two baffle structures of this utility model.

[0021] The markings in the diagram are: 1. Cantilever beam; 2. Slide rod; 3. Second spring; 10. Plate; 21. Energy absorption box; 211. Pressure chamber; 212. Air outlet; 22. Hydraulic cylinder; 23. Piston rod; 231. Installation channel; 30. Buffer; 41. Pressure plate; 42. First spring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0023] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] like Figures 1-3 As shown, this embodiment provides a collision-resistant buffer baffle structure for a bucket wheel excavator, including: a plate body 10, an energy-absorbing device, a buffer member 30, and a pressure-relieving member. The plate body 10 is disposed on one side of the cantilever beam 1 in the width direction. The energy-absorbing device is disposed between the plate body 10 and the cantilever beam 1, and its two ends are respectively connected to the plate body 10 and the cantilever beam 1. The energy-absorbing device is provided with a pressure chamber 211 suitable for filling with compressed air, and part of the energy-absorbing device is suitable for collapsing when the plate body 10 moves toward the cantilever beam 1. The buffer member 30 is disposed in the pressure chamber 211 and is connected to the inner wall of the pressure chamber 211 away from the plate body 10. The pressure-relieving member is connected to the energy-absorbing device and is suitable for communicating the pressure chamber 211 with the outside when the pressure in the pressure chamber 211 exceeds a threshold.

[0025] In some embodiments, the plate 10 is disposed on one side of the cantilever beam 1 in the width direction. The plate 10 is adapted to contact the colliding object to avoid direct impact of the colliding object on the cantilever beam 1. An energy-absorbing device is installed between the plate 10 and the cantilever beam 1, with both ends of the energy-absorbing device connected to the plate 10 and the cantilever beam 1, respectively. The energy-absorbing device has a pressure chamber 211 inside, which is adapted to be filled with compressed air. A portion of the energy-absorbing device has the characteristic of collapsing when the plate 10 moves toward the cantilever beam 1. Thus, when the plate 10 is subjected to a collision force and moves toward the cantilever beam 1, the energy-absorbing device can, through its own collapse, reduce the pressure of the compressed air in the pressure chamber 211. The buffer 30 is located inside the pressure chamber 211 and is connected to the inner wall of the pressure chamber 211 away from the plate 10. The buffer 30 can further provide a buffering effect during the process of the energy absorption device absorbing the collision energy, assisting the energy absorption device to better disperse and reduce the collision force, and protecting components such as the cantilever beam 1 from excessive impact. The pressure relief device is connected to the energy absorption device. The pressure relief device is suitable for connecting the pressure chamber 211 to the outside when the pressure in the pressure chamber 211 exceeds the set threshold, so as to prevent the pressure in the pressure chamber 211 from being too high and causing damage to the energy absorption device or causing other safety problems, thus playing a safety protection role.

[0026] It is worth mentioning that the pressure relief component only connects the pressure chamber 211 to the outside when the pressure inside the pressure chamber 211 exceeds a set threshold. Thus, when the pressure inside the pressure chamber 211 exceeds the threshold, the pressure relief component connects the pressure chamber 211 to the outside, thereby releasing the pressure inside the pressure chamber 211. When the pressure inside the pressure chamber 211 is less than or equal to the threshold, the pressure relief component controls the pressure chamber 211 to be isolated from the outside. Thus, through the above settings, the pressure inside the pressure chamber 211 can be maintained at its maximum value when the plate 10 moves toward the cantilever beam 1, so that the compressed air inside the pressure chamber 211 can always play a maximum buffering role to ensure continuous and effective absorption of collision energy.

[0027] It is understandable that the inner wall of the pressure chamber 211 on the side closer to the plate 10 is the first wall, and the inner wall of the pressure chamber 211 on the side away from the plate 10 is the second wall. The buffer 30 is disposed on the second wall. When the compressed air in the pressure chamber 211 cannot completely absorb the collision energy, the first wall continues to move toward the second wall until it comes into contact with the buffer 30. At this time, the buffer 30 begins to work and further absorbs the collision energy.

[0028] According to the anti-collision buffer baffle structure of the bucket wheel excavator of this utility model, the pressure chamber 211 in its energy absorption device is suitable for initially absorbing and buffering the impact force on the cantilever beam 1, and the buffer component 30 inside the pressure chamber 211 is suitable for further absorbing and buffering the impact force on the cantilever beam 1. Thus, through the combined action of the pressure chamber 211 and the buffer component 30, the impact force on the cantilever beam 1 can be effectively absorbed, effectively protecting the structural safety of the cantilever beam 1 and the bucket wheel excavator, reducing the damage and maintenance costs of the bucket wheel excavator caused by collisions. At the same time, the setting of the pressure relief component avoids the energy absorption device from being damaged or even exploding due to excessive pressure in the pressure chamber 211, and at the same time can ensure that the pressure value in the pressure chamber 211 can be at the maximum preset value, so that the energy absorption device can continuously and effectively absorb the impact force on the cantilever beam 1, further protecting the structural safety of the cantilever beam 1 and the bucket wheel excavator.

[0029] According to some embodiments of the present invention, the energy absorption device includes an energy absorption box 21, a pressure chamber 211 is provided inside the energy absorption box 21, and an air outlet 212 is provided in the energy absorption box 211 to communicate with the outside. The pressure relief component includes a pressure plate 41, which is rotatably connected to the energy absorption box 21. The pressure plate 41 is adapted to rotate and make the air outlet 212 communicate with the outside when the pressure in the pressure chamber 211 exceeds a threshold.

[0030] In some embodiments, the energy-absorbing box 21 includes a first plate, a second plate, and a deformable enclosure. The first plate and the second plate are respectively disposed at both ends of the deformable enclosure. The deformable enclosure can be a structure similar to a "corrugated pipe". The first plate is adapted to be connected to the plate body 10. The second plate is provided with an air outlet 212. The side of the first plate facing the second plate is constructed as a first wall, and the side of the second plate facing the first plate is constructed as a second wall. The second plate is rotatably connected to a pressure plate 41. The pressure plate 41 rotates to selectively open or close the air outlet 212, thereby realizing the communication or isolation between the pressure chamber 211 and the outside.

[0031] Understandably, when the pressure in the pressure chamber 211 is within the normal range (not exceeding the threshold), the pressure plate 41 remains stationary, the air outlet 212 is closed, the pressure chamber 211 is isolated from the outside, and the energy absorption device absorbs collision energy by relying on its own structural collapse and the elastic deformation of the compressed air in the pressure chamber 211.

[0032] If the impact force is too great, causing the pressure in the pressure chamber 211 to exceed the set threshold, the pressure on the pressure plate 41 will overcome its rotational resistance, causing the pressure plate 41 to rotate around the rotation connection point. As the pressure plate 41 rotates, the originally closed vent 212 gradually connects to the outside, and the high-pressure gas in the pressure chamber 211 is quickly discharged into the external environment through the vent 212, thereby reducing the pressure in the pressure chamber 211 and preventing excessive pressure from damaging the energy absorption device or even the entire baffle structure.

[0033] According to some embodiments of the present invention, the pressure relief component further includes a first spring 42, which is disposed on the side of the pressure plate 41 away from the energy absorption box 21. The first spring 42 is adapted to drive the pressure plate 41 to rotate to close the air outlet 212.

[0034] Understandably, the first spring 42 applies a rotational torque to the pressure plate 41 by its own elastic force. The rotational torque can cause the pressure plate 41 to rotate around the rotational connection point between it and the energy absorption box 21, thereby tightly sealing the air outlet 212 and ensuring that the pressure chamber 211 forms a relatively sealed space, so that the compressed air can store energy in it to cope with possible subsequent collisions.

[0035] When the baffle structure plate 10 is impacted, the plate 10 moves toward the cantilever beam 1 and squeezes the energy absorption device, causing the pressure in the pressure chamber 211 to gradually increase.

[0036] In the initial stage of pressure increase, the elastic force of the first spring 42 is sufficient to overcome the reverse force generated by the pressure in the pressure chamber 211 on the pressure plate 41, and the pressure plate 41 remains in the closed state of the vent 212.

[0037] Once the pressure in the pressure chamber 211 exceeds the preset threshold, the reverse force generated by the pressure on the pressure plate 41 will be greater than the elastic force of the first spring 42. At this time, the pressure in the pressure chamber 211 will overcome the elastic force of the first spring 42, causing the pressure plate 41 to rotate in the opposite direction to open the vent 212, thereby enabling the pressure chamber 211 to communicate with the outside. At this time, the high-pressure gas can be quickly discharged to achieve pressure relief protection. When the pressure in the pressure chamber 211 drops to a certain level (the pressure in the pressure chamber 211 is less than or equal to the threshold), the elastic force of the first spring 42 will regain dominance, driving the pressure plate 41 to rotate again and close the vent 212.

[0038] Therefore, the presence of the first spring 42 enables the pressure plate 41 to automatically reset after the pressure chamber 211 is depressurized, and re-close the air outlet 212. This allows the baffle structure to return to its initial sealed state without manual intervention after each collision, ready to deal with the next possible collision. This improves the automation level and ease of use of the bucket wheel excavator. Moreover, the first spring 42 can keep the pressure value in the pressure chamber 211 at its maximum value when the energy absorption device absorbs the collision energy, so that the energy absorption device can continuously, stably and effectively absorb the collision energy.

[0039] According to some embodiments of the present invention, the energy absorption device further includes a hydraulic cylinder 22, which is connected to the cantilever beam 1, and the piston rod 23 of the hydraulic cylinder 22 is connected to the energy absorption box 21.

[0040] In some embodiments, when the compressed air in the pressure chamber 211 of the energy-absorbing device cannot completely absorb the collision energy, the second plate will move toward the first plate until the second plate contacts the buffer 30. At this time, the buffer 30 can absorb the collision energy, and the hydraulic cylinder 22 will also absorb the collision energy to further reduce the impact force on the cantilever beam 1.

[0041] Therefore, the addition of hydraulic cylinder 22 provides an additional buffering mechanism for the energy absorption device. Compared with simply relying on the collapse of energy absorption box 21, the buffering of compressed air in pressure chamber 211, and the buffering of buffer component 30, hydraulic cylinder 22 can absorb more collision energy through the flow and pressure change of hydraulic oil, greatly enhancing the buffering capacity of the baffle structure.

[0042] According to some embodiments of the present invention, the piston rod 23 is provided with an installation channel 231, one end of the installation channel 231 is open toward the energy absorption box 21, the other end of the installation channel 231 is connected to the outside, a first spring 42 is provided in the installation channel 231, and at least a portion of the pressure plate 41 is rotatably disposed in the installation channel 231.

[0043] It is understandable that when the pressure in the pressure chamber 211 exceeds the threshold, the pressure plate 41 can be rotated. At this time, the pressure chamber 211 is connected to the installation channel 231 through the air outlet 212, and the high-pressure gas in the pressure chamber 211 can be discharged through the air outlet 212 and the installation channel 231 in sequence.

[0044] It is worth mentioning that the first spring 42 is set inside the installation channel 231, which makes the structure of the entire energy absorption device more compact, and at the same time avoids the first spring 42 and the pressure plate 41 from being exposed, thereby extending the service life of the first spring 42 and the pressure plate 41.

[0045] It should be noted that when the second plate moves toward the first plate, the pressure in the pressure chamber 211 will increase, causing the pressure plate 41 to tend to rotate toward the mounting channel 231 and open the vent 212. The hydraulic cylinder 22 and the first spring 42 can act at this time to prevent the pressure plate 41 from rotating. At this time, the hydraulic cylinder 22 and the first spring 42 can also absorb the collision energy, thereby improving the ability of the baffle structure to absorb the collision energy when the buffer 30 is not in action.

[0046] According to some embodiments of the present invention, the mounting channel 231 includes a first channel section extending axially in the piston rod 23, one end of the first channel section being open toward the energy absorption box 21, and the other end of the first channel section being connected to a second channel section extending radially in the piston rod 23, the second channel section being connected to the outside.

[0047] Understandably, the first channel section is adapted to provide mounting space for the first spring 42 and movement space for the pressure plate 41 to rotate, while the first channel section cooperates with the second channel section to provide a channel for the high-pressure gas in the pressure chamber 211 to be discharged.

[0048] It is worth mentioning that the first channel section extends axially along the piston rod 23, making full use of the longitudinal space of the piston rod 23 and providing sufficient installation and movement space for the first spring 42 and the pressure plate 41, while not affecting the normal extension and retraction movement of the piston rod 23 in the hydraulic cylinder 22. The second channel section extends radially, achieving connection with the outside without occupying too much longitudinal space, making the structure of the entire installation channel 231 more compact and reasonable, and improving the space utilization rate.

[0049] According to some embodiments of the present invention, the cross-sectional area of ​​the buffer 30 is S1, and the cross-sectional area of ​​the pressure chamber 211 near the inner wall of the cantilever beam 1 is S2, satisfying: 0.8≤S1 / S2≤0.9. The buffer 30 is provided with a connecting hole suitable for connecting the pressure chamber 211 with the air outlet 212.

[0050] In some embodiments, the inner wall of the pressure chamber 211 near the plate 10 is the first wall, and the inner wall of the pressure chamber 211 near the cantilever beam 1 is the second wall. The first and second walls have the same shape, and the cross-sectional area of ​​both the first and second walls is S2. By setting 0.8≤S1 / S2, this application can ensure that the contact area of ​​the first wall when in contact with the buffer 30 is large enough, avoiding deformation or even damage to the first wall due to excessive local pressure, thereby extending the service life of the baffle structure. Of course, by setting S1 / S2≤0.9, this application can avoid interference between the buffer 30 and the collapsing energy-absorbing device (deformation enclosure), thereby avoiding the impact of the collapsing energy-absorbing device on the contact between the first wall and the buffer 30, thus ensuring the stability of the baffle structure in absorbing collision energy.

[0051] According to some embodiments of the present invention, the buffer 30 is constructed as a polyurethane elastomer.

[0052] In some embodiments, the polyurethane elastomer has a unique polymer chain structure with numerous physical and chemical cross-linking points between its molecular chains. When the cantilever beam 1 collides during rotation and the plate 10 is subjected to impact force, the buffer 30 (polyurethane elastomer) is compressed. At this time, the molecular chains deform, twist, and slip, and the cross-linking points between the molecular chains also change accordingly. In this process, the work done by the external force is converted into the internal energy of the molecular chains and dissipated as heat, thereby achieving energy absorption and dissipation, and reducing the impact of the collision on the baffle structure and the cantilever beam 1.

[0053] After the impact force dissipates, the polyurethane elastomer molecular chains tend to return to their original shape. Specifically, due to the cross-linking between the molecular chains, they attract each other, causing the buffer 30 to gradually return to its initial shape and size, preparing for the next collision and ensuring that the baffle structure continues to play its anti-collision buffering role.

[0054] It is worth mentioning that polyurethane elastomers can absorb a large amount of collision energy. Compared with some traditional cushioning materials, such as rubber, polyurethane elastomers can absorb more energy under the same amount of deformation. This allows the buffer 30 to effectively reduce the magnitude of the impact force when the cantilever beam 1 collides, thereby reducing the damage to the baffle structure and the cantilever beam 1.

[0055] According to some embodiments of this utility model, such as Figure 3 As shown, baffle structures are provided on both sides of the cantilever beam 1 in the width direction. The cantilever beam 1 is provided with a sliding hole that runs through in the width direction. Part of the sliding rod 2 is slidably disposed in the sliding hole, and both ends of the sliding rod 2 protrude from the cantilever beam 1 and are respectively connected to the two baffle structures.

[0056] It is understandable that the two ends of the slide bar 2 are connected to the plates 10 of the two baffle structures respectively, so that the plates 10 can be stably set on both sides in the width direction of the cantilever beam 1, and the plates 10 of the two baffle structures can face each other, so as to avoid the gravity of the plates 10 acting on the energy absorption device and causing the pressure chamber 211 to deform.

[0057] It is worth mentioning that the inner peripheral wall of the sliding hole can restrict part of the outer peripheral wall of the sliding rod 2, so that the sliding rod 2 can move stably along the extension direction of the sliding hole, and thus the plate 10 can move stably along the width direction of the cantilever beam 1, so as to ensure that the baffle structure can stably absorb the collision energy.

[0058] In some embodiments, the two baffle structures are a first baffle structure and a second baffle structure. When the first baffle structure is subjected to an impact force, the compressed air in the pressure chamber 211 of the first baffle structure, the buffer 30, and the hydraulic cylinder 22 can all be used to absorb the impact energy. The hydraulic cylinder 22 of the second baffle structure can also assist in absorbing the impact energy. Thus, the above arrangement enables the bucket wheel excavator to better absorb the impact energy when subjected to an impact force, thereby reducing the impact of the impact force on the bucket wheel excavator.

[0059] According to some embodiments of the present invention, the slide bar 2 is fitted with two second springs 3, which are located on both sides of the cantilever beam 1 respectively. One end of each of the two second springs 3 is adapted to cooperate with the cantilever beam 1, and the other end of each of the two second springs 3 is adapted to cooperate with the slide bar 2 respectively.

[0060] In some embodiments, the two baffle structures are a first baffle structure and a second baffle structure, respectively, and the two second springs 3 correspond to the first baffle structure and the second baffle structure, respectively. When the first baffle structure is subjected to an impact force, the first baffle structure can absorb the collision energy. Since the plate 10 of the first baffle structure will move towards the cantilever beam 1, it will drive the slide rod 2 to move. At this time, the second spring 3 corresponding to the first baffle structure will be compressed, and the second spring 3 corresponding to the second baffle structure will be stretched. Thus, the two second springs 3 can work together to form a resultant force opposite to the direction of the collision force, further absorbing and dispersing the collision energy, slowing down the sliding speed of the slide rod 2, and reducing the impact of the collision on the cantilever beam 1.

[0061] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0062] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A collision-resistant buffer baffle structure for a bucket wheel excavator, characterized in that, include: Plate (10), said plate (10) is disposed on one side of the cantilever beam (1) in the width direction; An energy-absorbing device is provided between the plate (10) and the cantilever beam (1) and its two ends are respectively connected to the plate (10) and the cantilever beam (1). The energy-absorbing device is provided with a pressure chamber (211) suitable for filling with compressed air, and part of the energy-absorbing device is suitable for collapsing when the plate (10) moves toward the cantilever beam (1). A buffer (30) is disposed in the pressure chamber (211) and connected to the inner wall of the pressure chamber (211) away from the plate (10); A pressure relief element, which is connected to an energy absorption device, is adapted to connect the pressure chamber (211) to the outside when the pressure in the pressure chamber (211) exceeds a threshold.

2. The anti-collision buffer baffle structure for bucket wheel excavators according to claim 1, characterized in that, The energy-absorbing device includes an energy-absorbing box (21), in which a pressure chamber (211) is provided. The energy-absorbing box (21) is provided with an air outlet (212) suitable for communicating the pressure chamber (211) with the outside. The pressure-relieving component includes a pressure plate (41), which is rotatably connected to the energy-absorbing box (21). The pressure plate (41) is adapted to rotate and communicate the air outlet (212) with the outside when the pressure in the pressure chamber (211) exceeds a threshold.

3. The anti-collision buffer baffle structure for bucket wheel excavators according to claim 2, characterized in that, The pressure relief component also includes a first spring (42), which is disposed on the side of the pressure plate (41) away from the energy absorption box (21). The first spring (42) is adapted to drive the pressure plate (41) to rotate to close the air outlet (212).

4. The anti-collision buffer baffle structure for bucket wheel excavators according to claim 3, characterized in that, The energy absorption device also includes a hydraulic cylinder (22), which is connected to the cantilever beam (1), and the piston rod (23) of the hydraulic cylinder (22) is connected to the energy absorption box (21).

5. The anti-collision buffer baffle structure for bucket wheel excavators according to claim 4, characterized in that, The piston rod (23) is provided with an installation channel (231), one end of which is open to the energy absorption box (21), and the other end of which is connected to the outside. The first spring (42) is provided in the installation channel (231), and at least a portion of the pressure plate (41) is rotatably disposed in the installation channel (231).

6. The anti-collision buffer baffle structure for bucket wheel excavators according to claim 5, characterized in that, The installation channel (231) includes a first channel section extending axially along the piston rod (23), one end of which is open toward the energy-absorbing box (21), and the other end of which is connected to a second channel section extending radially along the piston rod (23), the second channel section being connected to the outside.

7. The anti-collision buffer baffle structure for bucket wheel excavators according to claim 2, characterized in that, The cross-sectional area of ​​the buffer (30) is S1, and the cross-sectional area of ​​the pressure chamber (211) near the inner wall of the cantilever beam (1) is S2, satisfying: 0.8≤S1 / S2≤0.

9. The buffer (30) is provided with a connecting hole suitable for connecting the pressure chamber (211) and the air outlet (212).

8. The anti-collision buffer baffle structure for bucket wheel excavators according to claim 1, characterized in that, The buffer (30) is constructed of polyurethane elastomer.

9. The anti-collision buffer baffle structure for bucket wheel excavators according to claim 1, characterized in that, Both sides of the cantilever beam (1) are provided with baffle structures in the width direction. The cantilever beam (1) is provided with a through hole in the width direction. Part of the slide rod (2) is slidably disposed in the through hole, and both ends of the slide rod (2) protrude out of the cantilever beam (1) and are respectively connected to the two baffle structures.

10. The anti-collision buffer baffle structure for bucket wheel excavators according to claim 9, characterized in that, The slide bar (2) is fitted with two second springs (3), which are located on both sides of the cantilever beam (1). One end of each second spring (3) is adapted to cooperate with the cantilever beam (1), and the other end of each second spring (3) is adapted to cooperate with the slide bar (2).

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