A self-mobile belt conveyor with a buffer adjustment mechanism

Abstract

The present invention relates to the technical field of belt conveyors, and specifically relates to a self-mobile belt conveyor with a buffer adjustment mechanism, which includes a belt conveyor main body. Support frames are installed at both ends of the belt conveyor main body. A buffer base for buffering the support frame is arranged below the input end of the belt conveyor main body. The buffer base includes a bottom plate, and vertical frame plates are arranged on both sides of the bottom plate. A main buffer unit and at least one auxiliary buffer unit are installed between the vertical frame plates. The auxiliary buffer unit is slidably installed on the vertical frame plates and moves in the vertical direction. Detection units are arranged on both the main buffer unit and the auxiliary buffer unit. The detection units detect the displacement range of the buffer cushion plate in the vertical direction. This technical solution provides a continuously increasing buffer force for the support frame at one end of the belt conveyor main body through the main buffer unit and multiple auxiliary buffer units. The detection unit can adjust the buffer force on the belt conveyor main body according to the weight of the goods.

Description

Technical Field

[0001] The present invention relates to the technical field of belt conveyors, and more particularly to a self-mobile belt conveyor with a buffer adjustment mechanism. Background Art

[0002] At present, a belt conveyor is short for a belt conveyor, which has fixed and mobile types. It has a simple structure and high efficiency. The falling materials are transported to a designated location through the belt conveyor. Due to the large drop between the belt conveyor and the feeding device, the materials generate an impact when they fall on the input end of the belt conveyor, which may cause damage to the belt. Therefore, a shock absorption and buffering device needs to be installed at the part of the belt conveyor that is impacted.

[0003] Chinese Patent CN220519255U discloses a movable belt conveyor buffer device, which includes a manual winch, a winch rope, an elastic buffer mechanism and a track. The device places the elastic buffer mechanism on the track between the upper and lower belt surfaces of the belt conveyor to buffer the impact on the belt conveyor, but the buffering capacity is fixed. When the impact on the belt conveyor is greater than the buffering range of the buffer device, it may cause damage to the buffer device and the belt conveyor. Summary of the Invention

[0004] In view of the above problems, it is necessary to provide a self-mobile belt conveyor with a buffer adjustment mechanism for the problems of the prior art.

[0005] To solve the problems of the prior art, the technical solution adopted by the present invention is: a self-mobile belt conveyor with a buffer adjustment mechanism, including a belt conveyor main body, support frames are installed at both ends of the belt conveyor main body, and a buffer base for buffering the support frames is arranged below the input end of the belt conveyor main body. The buffer base includes a bottom plate, vertical frame plates are arranged on both sides of the bottom plate, a main buffer unit and at least one sub-buffer unit are installed between the vertical frame plates. The working end of the main buffer unit is in contact with the bottom of the support frame to buffer the vibration of the belt conveyor main body. The sub-buffer unit is slidably installed on the vertical frame plate and moves in the vertical direction. Both the main buffer unit and the sub-buffer unit include a horizontally extending mounting plate and a plurality of elastic pistons installed on the mounting plate. The top ends of the elastic pistons are fixedly connected to the bottom side of the buffer pad. Detection units are arranged on both the main buffer unit and the sub-buffer unit to detect the displacement range of the buffer pad in the vertical direction. A first linear actuator for driving the sub-buffer unit to move upward is arranged on the buffer base. After the detection unit detects that the buffer pad of the main buffer unit descends beyond a set distance, the first linear actuator is started through a controller, and the first linear actuator drives the next sub-buffer unit to move upward until the buffer pad of the sub-buffer unit is in contact with the support frame of the belt conveyor main body.

[0006] Preferably, the detection unit includes limit blocks arranged at both ends of each buffer cushion plate. The limit blocks are inserted into limit holes provided on the vertical mounting plates. The width of the limit holes is the same as the width of the limit blocks, and the limit holes extend in the vertical direction. A vertically downward extending insertion rod is provided below the limit block, and a limit head with a diameter larger than that of the insertion rod is coaxially arranged at the bottom of the insertion rod. The secondary buffer unit further includes a sliding block slidably mounted on the outside of the vertical mounting plate. A guide sleeve is provided on the sliding block, and the limit head is inserted into the guide sleeve. The inner diameter of the top opening of the guide sleeve is the same as the diameter of the insertion rod, and the inner diameter of the guide sleeve is the same as the diameter of the limit head. A sensor is fixedly installed below the sliding block and below the guide sleeve, and the working end of the sensor faces upward. The sensor is used to detect the linear distance between the limit head and the sensor, and the sensor is signal-connected to a first linear actuator.

[0007] Preferably, a lower sealing block is fixedly installed at the bottom of the guide sleeve. A through hole is provided on the lower sealing block, and the axis of the through hole is on the same straight line as the axis of the limit head. The inner diameter of the through hole is smaller than the diameter of the limit head.

[0008] Preferably, vertically downward extending guide rods are provided at both ends below each mounting plate. The guide rods are inserted into guide cylinders provided on the bottom plate. The top of the guide cylinder located below the mounting plate of the main buffer unit is higher than the top of the guide cylinder located below the secondary buffer unit. When the mounting plate of the main buffer unit abuts against the top of the guide cylinder, the buffer cushion plate of the main buffer unit abuts against the support frame. A lower support slider is slidably mounted on the buffer base. The lower support slider is located between the two guide cylinders and moves horizontally along the arrangement direction of the main buffer unit and the secondary buffer unit. The top of the lower support slider is on the same horizontal plane as the top of the guide cylinder below the main buffer unit.

[0009] Preferably, the first linear actuator is fixedly installed on one side of the guide cylinder located below the secondary buffer unit. The first linear actuator is located on one side of the movement path of the lower support slider. The working end of the first linear actuator moves in the vertical direction. The first linear actuator pushes the mounting plate of the secondary buffer unit upward to a horizontal height not lower than that of the mounting plate of the main buffer unit.

[0010] Preferably, side support sliders are provided on both sides of the lower support slider. The lower support slider and the side support sliders are fixedly connected by a horizontally extending connecting member. The side support sliders are slidably mounted on the outside of the vertical mounting plate. The top of the side support sliders abuts against the bottom of the sliding block on the main buffer unit.

[0011] Preferably, at least one horizontally extending insertion plate is provided at one end of the lower support slider away from the secondary buffer unit. A fixing block is fixedly installed at one end of the bottom plate away from the secondary buffer unit of the first linear driver, and the insertion plate is inserted into the fixing block. A horizontally extending extension rod is further provided at one end of the lower support slider away from the secondary buffer unit. The extension rod is inserted into the fixing block and extends to the end of the fixing block away from the lower support slider. A spring is sleeved on the extension rod, and the spring elastically connects the lower support slider and the fixing block. The elastic force of the spring moves the lower support slider toward the secondary buffer unit side.

[0012] Preferably, a connecting plate is fixedly installed at the end of the extension rod extending to the end of the fixing block away from the lower support slider. The connecting plate extends vertically downward to below the bottom plate. Support feet for elevating the bottom plate are provided on both sides below the bottom plate. A second linear driver is fixedly installed below the bottom plate, and the working end of the second linear driver moves in the horizontal direction. The second linear driver abuts against the connecting plate to push the lower support slider toward the fixing block.

[0013] The beneficial effects of the present invention compared with the prior art are as follows:

[0014] First, the present invention provides a continuously increasing buffering force to the support frame at one end of the belt conveyor main body through the main buffer unit and multiple secondary buffer units, adjusts the buffering force according to the weight of the goods, and avoids the impact force of the goods on the belt conveyor main body exceeding the buffering range of the main buffer unit, damaging the structures of the belt conveyor main body, the buffer base, and the main buffer unit, and improving the protection ability of the equipment.

[0015] Second, the present invention monitors the moving distance of the buffer pad in the vertical direction through the detection unit. When it is detected that the downward displacement of the buffer pad exceeds the set value, it can be determined that the impact force of the goods on the belt conveyor main body exceeds a certain value, thereby increasing the number of secondary buffer units, automatically improving the buffering ability of the belt conveyor main body, protecting the equipment, and eliminating the need for manual debugging.

[0016] Third, the lower support slider slidably installed on the buffer base in the present invention can move below the mounting plate of the main buffer unit. The bottom of the mounting plate abuts against the upper side of the lower support slider so that the lower support slider supports the mounting plate of the main buffer unit. When the mounting plate of the secondary buffer unit is lifted by the first linear driver, the lower support slider can quickly slide below the mounting plate of the secondary buffer unit under the elastic force of the spring, and at the same time support the mounting plates of the main buffer unit and the secondary buffer unit, ensuring the buffering effect of the main buffer unit and the secondary buffer unit on the support frame. Description of the Drawings

[0017] Figure 1 is a perspective view of a self - mobile belt conveyor with a buffer adjustment mechanism;

[0018] Figure 2It is a side view of a self - mobile belt conveyor with a buffer adjustment mechanism;

[0019] Figure 3 It is Figure 2 a sectional view taken along the line A - A of

[0020] Figure 4 It is a perspective view of a self - mobile belt conveyor with a buffer adjustment mechanism after removing the belt conveyor main body;

[0021] Figure 5 It is Figure 4 a partially enlarged view at position B of

[0022] Figure 6 It is a front view of a self - mobile belt conveyor with a buffer adjustment mechanism after removing the belt conveyor main body;

[0023] Figure 7 It is Figure 6 a sectional view taken along the line C - C of

[0024] Figure 8 It is Figure 7 a partially enlarged view at position D of

[0025] Figure 9 It is a three - dimensional structural decomposition of a self - mobile belt conveyor with a buffer adjustment mechanism after removing the belt conveyor main body Figure 1 ;

[0026] Figure 10 It is a three - dimensional structural decomposition of a self - mobile belt conveyor with a buffer adjustment mechanism after removing the belt conveyor main body Figure 2 .

[0027] In the figure, the reference numerals are: 1, belt conveyor main body; 11, support frame; 2, buffer base; 21, bottom plate; 211, guide cylinder; 212, support leg; 22, vertical frame plate; 221, limit hole; 23, first linear actuator; 24, lower support slider; 241, insertion plate; 242, extension rod; 243, spring; 244, connecting plate; 245, second linear actuator; 25, side support slider; 251, connecting piece; 26, fixing block; 3, main buffer unit; 31, mounting plate; 311, guide rod; 32, elastic piston; 33, buffer pad; 4, auxiliary buffer unit; 41, detection unit; 411, limit block; 412, insertion rod; 413, limit head; 414, sliding block; 415, guide sleeve; 416, sensor; 417, lower plugging block; 418, through hole. Detailed implementation manners

[0028] To further understand the features, technical means, specific purposes, and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0029] Reference Figures 1 to 10 :

[0030] A self - mobile belt conveyor with a buffer adjustment mechanism, comprising a belt conveyor main body 1. Support frames 11 are installed at both ends of the belt conveyor main body 1. A buffer base 2 for buffering the support frame 11 is arranged below the input end of the belt conveyor main body 1. The buffer base 2 includes a bottom plate 21. Vertical frame plates 22 are arranged on both sides of the bottom plate 21. A main buffer unit 3 and at least one secondary buffer unit 4 are installed between the vertical frame plates 22. The working end of the main buffer unit 3 is in contact with the bottom of the support frame 11 to buffer the vibration of the belt conveyor main body 1. The secondary buffer unit 4 is slidably installed on the vertical frame plates 22 and moves in the vertical direction. Both the main buffer unit 3 and the secondary buffer unit 4 include a horizontally extending mounting plate 31 and a number of elastic pistons 32 installed on the mounting plate 31. The tops of the elastic pistons 32 are fixedly connected to the bottom side of a buffer pad 33. Detection units 41 are arranged on both the main buffer unit 3 and the secondary buffer unit 4. The detection units 41 detect the displacement range of the buffer pad 33 in the vertical direction. A first linear driver 23 for driving the secondary buffer unit 4 to move upward is arranged on the buffer base 2. After the detection unit 41 detects that the buffer pad 33 of the main buffer unit 3 has dropped by more than a set distance, the first linear driver 23 is started through a controller. The first linear driver 23 drives the next secondary buffer unit 4 to move upward until the buffer pad 33 of this secondary buffer unit 4 is in contact with the support frame 11 of the belt conveyor main body 1.

[0031] Both ends of the belt conveyor main body 1 in the present invention are installed with support frames 11. The impact caused by the goods falling on the input end of the belt conveyor main body 1 on the belt conveyor main body 1 is buffered by the buffer base 2 that supports the support frame 11 and the main buffer unit 3 on the buffer base 2. In this embodiment, there is one main buffer unit 3 on the buffer base 2. A plurality of elastic pistons 32 are arranged on the mounting plate 31 of the main buffer unit 3. The top ends of the elastic pistons 32 are all connected to the bottom of the buffer backing plate 33. The buffer backing plate 33 fits against the bottom of the support frame 11 under the elastic force of the elastic pistons 32. The impact of the goods on the belt conveyor main body 1 causes the elastic pistons 32 of the main buffer unit 3 to expand and contract, buffering the impact. In this embodiment, the elastic pistons 32 can provide elastic force through springs or can be air pistons and other existing technologies, which will not be elaborated here. A plurality of secondary buffer units 4 are also arranged on the buffer base 2. The number of the secondary buffer units 4 can be increased according to actual needs. The structure of the secondary buffer unit 4 is the same as that of the main buffer unit 3. The secondary buffer unit 4 is in a position lower than the main buffer unit 3 in the non-working state, and only keeps the buffer backing plate 33 of the main buffer unit 3 in contact with the support frame 11. When the goods impact the belt conveyor main body 1, the impact force presses down the buffer backing plate 33, causing the buffer backing plate 33 to compress the elastic pistons 32 and then move downward. The detection unit 41 arranged on the main buffer unit 3 monitors the moving distance of the buffer backing plate 33 in the vertical direction. When it is detected that the downward displacement of the buffer backing plate 33 exceeds the set value, it can be determined that the impact force of the goods on the belt conveyor main body 1 exceeds a certain value. At this time, the detection unit 41 on the main buffer unit 3 sends a signal to the controller, and the controller controls the first linear actuator 23 below the secondary buffer unit 4 to start, lifting the secondary buffer unit 4 to a position flush with the main buffer unit 3. The secondary buffer unit 4 and the main buffer unit 3 together provide buffering for the support frame 11, improving the ability to resist the impact of the goods. Similarly, after the impact of the goods on the belt conveyor main body 1 exceeds the main buffer unit 3 and a single secondary buffer unit 4, the subsequent secondary buffer units 4 can be successively lifted to contact the support frame 11. In this embodiment, the main buffer unit 3 and multiple secondary buffer units 4 provide continuously increasing buffering force for the support frame 11 at one end of the belt conveyor main body 1, adjusting the buffering force according to the weight of the goods, avoiding the impact force of the goods on the belt conveyor main body 1 exceeding the buffering range of the main buffer unit 3 and damaging the structures of the belt conveyor main body 1, the buffer base 2 and the main buffer unit 3, and improving the protection ability of the equipment.

[0032] To solve the problem of how the detection unit 41 monitors the moving range of the buffer backing plates 33 of the main buffer unit 3 and the secondary buffer units 4 in the vertical direction, the following features are specifically set:

[0033] The detection unit 41 includes limit blocks 411 provided at both ends of each buffer backing plate 33. The limit blocks 411 are inserted into limit holes 221 provided on the vertical mounting plate 22. The width of the limit holes 221 is the same as the width of the limit blocks 411, and the limit holes 221 extend in the vertical direction. A vertically downward extending insertion rod 412 is provided below the limit block 411. A limit head 413 with a diameter larger than that of the insertion rod 412 is coaxially provided at the bottom of the insertion rod 412. The secondary buffer unit 4 further includes a sliding block 414 slidably mounted outside the vertical mounting plate 22. A guide sleeve 415 is provided on the sliding block 414. The limit head 413 is inserted into the guide sleeve 415. The inner diameter of the top opening of the guide sleeve 415 is the same as the diameter of the insertion rod 412, and the inner diameter of the guide sleeve 415 is the same as the diameter of the limit head 413. A sensor 416 is fixedly installed below the guide sleeve 415 on the sliding block 414. The working end of the sensor 416 is arranged upward. The sensor 416 is used to detect the linear distance between the limit head 413 and the sensor 416, and the sensor 416 is signal-connected to the first linear actuator 23.

[0034] In this embodiment, limit blocks 411 are installed on both sides of the buffer backing plate 33 of the main buffer unit 3 and the secondary buffer unit 4. The limit blocks 411 are limited and move in the limit holes 221 of the vertical mounting plate 22. The insertion rods 412 provided on the limit blocks 411 are inserted into the guide sleeves 415 provided on the sliding blocks 414 slidably mounted on the vertical mounting plate 22. The limit heads 413 at the bottom ends of the insertion rods 412 are limited and move in the guide sleeves 415. Since the inner diameter of the top opening of the guide sleeve 415 is the same as the diameter of the insertion rod 412, and the inner diameter of the guide sleeve 415 is the same as the diameter of the limit head 413, the sliding block 414 hangs below the insertion rod 412 under the action of gravity. The sensor 416 on the sliding block 414 monitors the limit head 413 in the guide sleeve 415. At this time, the linear distance between the limit head 413 and the sensor 416 is the maximum distance. After the position of the sliding block 414 is fixed, when the buffer backing plate 33 buffers the support frame 11, the downward movement of the buffer backing plate 33 in the vertical direction will drive the limit blocks 411, the insertion rods 412, and the limit heads 413 to move downward. The linear distance between the limit head 413 and the sensor 416 shortens. When the linear distance between the limit head 413 and the sensor 416 is less than the set value, the sensor 416 can send a signal to the controller, and the first linear actuator 23 is started through the controller to lift the subsequent secondary buffer unit 4. The sensor 416 in this embodiment can be a distance measuring sensor.

[0035] To solve the problem of how to prevent the downward movement distance of the buffer backing plate 33 from being too large and causing the limit head 413 to hit the sensor 416, the following features are specifically set:

[0036] A lower plugging block 417 is fixedly installed at the bottom of the guide sleeve 415. A through hole 418 is provided on the lower plugging block 417. The axis of the through hole 418 is on the same straight line as the axis of the limit head 413, and the inner diameter of the through hole 418 is smaller than the diameter of the limit head 413.

[0037] In this embodiment, a lower plugging block 417 is installed below the guide sleeve 415. The working end of the sensor 416 monitors the position of the limit head 413 through the through hole 418 on the lower plugging block 417. Since the inner diameter of the through hole 418 is smaller than the diameter of the limit head 413, when the limit head 413 moves down to fit the lower plugging block 417, it cannot continue to move down, and the sensor 416 below the guide sleeve 415 will not be damaged, ensuring the safety of the sensor 416.

[0038] To solve the problem of how to fix the position of the mounting plate 31 of the lifted auxiliary buffer unit 4, the following features are specifically set:

[0039] Vertical guide rods 311 extending downward are provided at both ends below each mounting plate 31. The guide rods 311 are inserted into the guide cylinders 211 provided on the bottom plate 21. The top of the guide cylinder 211 below the mounting plate 31 of the main buffer unit 3 is higher than the guide cylinder 211 below the auxiliary buffer unit 4. When the mounting plate 31 of the main buffer unit 3 fits the top of the guide cylinder 211, the buffer backing plate 33 of the main buffer unit 3 fits the support frame 11. A lower support slider 24 is slidably installed on the buffer base 2. The lower support slider 24 is located between the two guide cylinders 211 and moves horizontally along the arrangement direction of the main buffer unit 3 and the auxiliary buffer unit 4. The top of the lower support slider 24 is on the same horizontal plane as the top of the guide cylinder 211 below the main buffer unit 3.

[0040] In this embodiment, several guide rods 311 are provided below the mounting plate 31 of the main buffer unit 3 and the auxiliary buffer unit 4. The guide rods 311 are inserted into the guide cylinders 211 provided on the bottom plate 21 to guide the movement of the mounting plate 31, ensuring that the mounting plate 31 can only move in the vertical direction. The top of the guide cylinder 211 below the mounting plate 31 of the main buffer unit 3 is higher than the guide cylinder 211 below the auxiliary buffer unit 4. When the mounting plate 31 of the main buffer unit 3 fits against the top of the guide cylinder 211, the main buffer unit 3 can be maintained at a high position, and the buffer pad 33 of the main buffer unit 3 contacts the bottom of the support frame 11. When the mounting plate 31 of the auxiliary buffer unit 4 fits against the guide cylinder 211, the buffer pad 33 of the auxiliary buffer unit 4 does not contact the support frame 11, realizing the separate buffering state of the main buffer unit 3. The lower support slider 24 slidably mounted on the buffer base 2 can move below the mounting plate 31 of the main buffer unit 3, and the bottom of the mounting plate 31 fits against the upper side of the lower support slider 24, enabling the lower support slider 24 to support the mounting plate 31 of the main buffer unit 3. The mounting plate 31 of the auxiliary buffer unit 4 is at a lower position and blocks the lower support slider 24. When the mounting plate 31 of the auxiliary buffer unit 4 is lifted by the first linear actuator 23, the lower support slider 24 can slide below the mounting plate 31 of the auxiliary buffer unit 4 to support the mounting plates 31 of the main buffer unit 3 and the auxiliary buffer unit 4, ensuring the buffering effect of the main buffer unit 3 and the auxiliary buffer unit 4 on the support frame 11.

[0041] To solve the problem of how the first linear actuator 23 drives the auxiliary buffer unit 4 to move upward, the following features are specifically set:

[0042] The first linear actuator 23 is fixedly installed on one side of the guide cylinder 211 below the auxiliary buffer unit 4. The first linear actuator 23 is located on one side of the movement path of the lower support slider 24. The working end of the first linear actuator 23 moves in the vertical direction, and the first linear actuator 23 pushes the mounting plate 31 of the auxiliary buffer unit 4 upward to a horizontal height not lower than that of the mounting plate 31 of the main buffer unit 3.

[0043] The first linear actuator 23 in this embodiment can be a cylinder or an electric push rod, etc. The first linear actuator 23 is located on one side of the movement path of the lower support slider 24. Therefore, the movement of the lower support slider 24 will not contact the first linear actuator 23. After the working end of the first linear actuator 23 moves upward in the vertical direction, it pushes the mounting plate 31 of the auxiliary buffer unit 4 upward and automatically resets after the lower support slider 24 moves below the mounting plate 31, avoiding the impact on the first linear actuator 23 and protecting the first linear actuator 23.

[0044] To solve the problem of how to fix the position of the slider 414 of the detection unit 41, the following features are specifically set:

[0045] On both sides of the lower support slider 24, there are side support sliders 25. The lower support slider 24 and the side support sliders 25 are fixedly connected by a horizontally extending connecting member 251. The side support sliders 25 are slidably mounted on the outer side of the vertical frame plate 22, and the top of the side support sliders 25 is in contact with the bottom of the sliding block 414 on the main buffer unit 3.

[0046] In this embodiment, the side support sliders 25 are connected to both sides of the lower support slider 24 through the connecting member 251. The side support sliders 25 move horizontally on the outer side of the vertical frame plate 22. The side support sliders 25 are located below the sliding block 414 of the detection unit 41 connected to the buffer backing plate 33 of the main buffer unit 3 to support the bottom of the sliding block 414, ensuring the fixed position of the sensor 416. Therefore, when the buffer backing plate 33 moves to drive the limit head 413 to move, the sensor 416 can detect the position change of the limit head 413. When the secondary buffer unit 4 moves upward, the buffer backing plate 33 drives the limit block 411 to move upward. The limit block 411 pulls the sliding block 414 to move upward through the insertion rod 412 and the limit head 413. When the sliding block 414 moves upward to a position higher than the upper surface of the side support slider 25, the side support slider 25 follows the lower support slider 24 to move horizontally to the lower part of the sliding block 414 of the secondary buffer unit 4 to support the sliding block 414, and the detection unit 41 of the secondary buffer unit 4 detects normally.

[0047] To solve the problem of how to drive the lower support slider 24 to quickly move to the lower part of the lifted secondary buffer unit 4, the following features are specifically set:

[0048] At least one horizontally extending insertion plate 241 is provided at one end of the lower support slider 24 away from the secondary buffer unit 4. A fixed block 26 is fixedly installed at one end of the bottom plate 21 away from the secondary buffer unit 4 of the first linear actuator 23. The insertion plate 241 is inserted into the fixed block 26. A horizontally extending extension rod 242 is also provided at one end of the lower support slider 24 away from the secondary buffer unit 4. The extension rod 242 is inserted into the fixed block 26 and extends to the end of the fixed block 26 away from the lower support slider 24. A spring 243 is sleeved on the extension rod 242. The spring 243 elastically connects the lower support slider 24 and the fixed block 26, and the elastic force of the spring 243 makes the lower support slider 24 move toward the secondary buffer unit 4.

[0049] In this embodiment, the lower support slider 24 is inserted onto the fixed block 26 through the insertion plate 241 and the extension rod 242, ensuring the stability of the movement path of the lower support slider 24. A spring 243 is sleeved on the extension rod 242. The lower support slider 24 moves towards the side of the secondary buffer unit 4 under the elastic force of the spring 243, but is blocked by the mounting plate 31 of the secondary buffer unit 4 in the initial position. When the first linear actuator 23 drives the secondary buffer unit 4 to lift, the mounting plate 31 is located above the lower support slider 24. The lower support slider 24 can quickly move under the elastic force of the spring 243 to fit with the mounting plate 31 of the next secondary buffer unit 4 and support the lifted mounting plate 31 of the secondary buffer unit 4.

[0050] To solve the problem of how to drive the lower support slider 24 to reset so that the secondary buffer unit 4 can be reset, the following features are specifically set:

[0051] A connecting plate 244 is fixedly installed at the end of the extension rod 242 extending away from the lower support slider 24 of the fixed block 26. The connecting plate 244 extends vertically downward below the bottom plate 21; support feet 212 for elevating the bottom plate 21 are provided on both sides below the bottom plate 21. A second linear actuator 245 is fixedly installed below the bottom plate 21. The working end of the second linear actuator 245 moves in the horizontal direction. The second linear actuator 245 presses against the connecting plate 244 to push the lower support slider 24 towards the fixed block 26.

[0052] In this embodiment, support feet 212 are provided below the bottom plate 21. The support feet 212 elevate the bottom plate 21 so that the second linear actuator 245 can be installed below the bottom plate 21. The second linear actuator 245 can be a cylinder or an electric push rod, etc. The working end of the second linear actuator 245 can contact and be installed on the connecting plate 244 at the end of the extension rod 242 away from the lower support slider 24. The second linear actuator 245 pushing the connecting plate 244 can drive the lower support slider 24 to compress the spring 243 and move towards the side away from the secondary buffer unit 4, so that the lower support slider 24 disengages from below the mounting plate 31 of the secondary buffer unit 4, and the side support slider 25 disengages from below the sliding block 414 of the secondary buffer unit 4. The secondary buffer unit 4 can move under the action of gravity to fit with the top end of the guiding cylinder 211 for reset. After the lower support slider 24 is reset, the working end of the second linear actuator 245 can be reset, reducing the pressure on the second linear actuator 245 and ensuring the working life of the second linear actuator 245.

[0053] Working principle: The impact of the goods on the main body 1 of the belt conveyor causes the elastic piston 32 of the main buffer unit 3 to expand and contract, buffering the impact. The auxiliary buffer unit 4 is in a position lower than the main buffer unit 3 in the non-working state, and only keeps the buffer pad 33 of the main buffer unit 3 in contact with the support frame 11. When the goods impact the main body 1 of the belt conveyor, the impact force presses down on the buffer pad 33, causing the buffer pad 33 to compress the elastic piston 32 and then move downward. The detection unit 41 provided on the main buffer unit 3 monitors the moving distance of the buffer pad 33 in the vertical direction. When it is detected that the downward displacement of the buffer pad 33 exceeds the set value, it can be determined that the impact force of the goods on the main body 1 of the belt conveyor exceeds a certain value. At this time, the detection unit 41 on the main buffer unit 3 sends a signal to the controller, and the controller controls the first linear actuator 23 below the auxiliary buffer unit 4 to start, lifting the auxiliary buffer unit 4 to a position flush with the main buffer unit 3. The auxiliary buffer unit 4 and the main buffer unit 3 together provide buffering for the support frame 11.

[0054] The above embodiments only represent one or several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A self-moving belt conveyor with a buffer adjustment mechanism, comprising a belt conveyor body (1), support frames (11) being installed at both ends of the belt conveyor body (1), and a buffer base (2) for buffering the support frame (11) being arranged below the input end of the belt conveyor body (1), characterized in that: The buffer base (2) comprises a bottom plate (21), vertical frames (22) are arranged on both sides of the bottom plate (21), a main buffer unit (3) and at least one auxiliary buffer unit (4) are installed between the vertical frames (22), the working end of the main buffer unit (3) is in contact with the bottom of the support frame (11) to buffer the vibration of the belt conveyor body (1), and the auxiliary buffer unit (4) is slidably installed on the vertical frames (22) and moves in the vertical direction; The main buffer unit (3) and the auxiliary buffer unit (4) both comprise a horizontally extending mounting plate (31) and a plurality of elastic pistons (32) mounted on the mounting plate (31), the top ends of the elastic pistons (32) being fixedly connected to the bottom sides of the buffer pads (33), the main buffer unit (3) and the auxiliary buffer unit (4) being both provided with detection units (41), the detection units (41) detecting the displacement range of the buffer pads (33) in the vertical direction, the buffer base (2) being provided with a first linear drive (23) for driving the auxiliary buffer unit (4) to move upward, the detection unit (41) detecting that the buffer pad (33) of the main buffer unit (3) has descended beyond a set distance, and then starting the first linear drive (23) through a controller, the first linear drive (23) driving the next auxiliary buffer unit (4) to move upward to a support frame (11) where the buffer pad (33) of the auxiliary buffer unit (4) is in contact with the belt conveyor body (1); The detection unit (41) comprises limit blocks (411) arranged at both ends of each buffer pad (33), the limit blocks (411) being inserted into limit holes (221) arranged on the vertical frame plate (22), the width of the limit holes (221) being the same as the width of the limit blocks (411), and the limit holes (221) extending in the vertical direction; A plunger (412) extending vertically downward is arranged below the limit block (411), and a limit head (413) having a diameter greater than that of the plunger (412) is coaxially arranged at the bottom of the plunger (412). The auxiliary buffer unit (4) further comprises a sliding block (414) slidably mounted on the outside of the vertical frame plate (22), a guide sleeve (415) is arranged on the sliding block (414), and the limit head (413) is inserted into the guide sleeve (415). The inner diameter of the top opening of the guide sleeve (415) is the same as the diameter of the plunger (412), and the inner diameter of the guide sleeve (415) is the same as the diameter of the limit head (413); The sliding block (414) is located below the guide sleeve (415) and is fixedly mounted with a sensor (416). The working end of the sensor (416) is arranged to face upwards. The sensor (416) is used to detect the linear distance between the limit head (413) and the sensor (416). The signal of the sensor (416) is connected to the first linear drive (23). Both ends of the lower side of each mounting plate (31) are provided with guide rods (311) extending vertically downward, and the guide rods (311) are inserted into guide cylinders (211) provided on the bottom plate (21); The top end of the guide cylinder (211) located below the mounting plate (31) of the main buffer unit (3) is higher than the guide cylinder (211) located below the auxiliary buffer unit (4); when the mounting plate (31) of the main buffer unit (3) fits the top end of the guide cylinder (211), the buffer pad (33) of the main buffer unit (3) fits the support frame (11); A lower support slider (24) is slidably mounted on the buffer base (2); the lower support slider (24) is located between the guide cylinders (211) on both sides and moves horizontally along the arrangement direction of the main buffer unit (3) and the auxiliary buffer unit (4); the top of the lower support slider (24) is on the same horizontal plane as the top of the guide cylinder (211) below the main buffer unit (3).

2. A self-moving belt conveyor with a buffer adjustment mechanism according to claim 1, characterized in that: A lower blocking block (417) is fixedly mounted on the bottom of the guide sleeve (415), and a through hole (418) is provided on the lower blocking block (417). The axis of the through hole (418) and the axis of the limit head (413) are on the same straight line, and the inner diameter of the through hole (418) is smaller than the diameter of the limit head (413).

3. The self-moving belt conveyor with a buffer adjustment mechanism according to claim 1, characterized in that: The first linear drive (23) is fixedly mounted on one side of a guide cylinder (211) located below the auxiliary buffer unit (4); the first linear drive (23) is located on one side of a moving path of the lower supporting slider (24); a working end of the first linear drive (23) is arranged to move in a vertical direction; the first linear drive (23) pushes the mounting plate (31) of the auxiliary buffer unit (4) to move upward to a level not lower than that of the mounting plate (31) of the main buffer unit (3).

4. The self-moving belt conveyor with a buffer adjustment mechanism according to claim 1, characterized in that: Side supporting sliders (25) are provided on both sides of the lower supporting slider (24), and the lower supporting slider (24) and the side supporting slider (25) are fixedly connected via a horizontally extending connecting piece (251); The side support slider (25) is slidably mounted on the outer side of the vertical frame plate (22), and the top of the side support slider (25) is in contact with the bottom of the sliding block (414) on the main buffer unit (3).

5. A self-moving belt conveyor with a buffer adjustment mechanism according to claim 4, characterized in that: At least one horizontally extending plug plate (241) is provided at one end of the lower supporting slide block (24) away from the auxiliary buffer unit (4); a fixing block (26) is fixedly mounted on one end of the bottom plate (21) located at the first linear drive (23) away from the auxiliary buffer unit (4); and the plug plate (241) is inserted into the fixing block (26); An extension rod (242) extending horizontally is also provided at one end of the lower supporting slider (24) away from the auxiliary buffer unit (4); the extension rod (242) is inserted into the fixed block (26) and extends to one end of the fixed block (26) away from the lower supporting slider (24); a spring (243) is sleeved on the extension rod (242); the spring (243) elastically connects the lower supporting slider (24) and the fixed block (26); the elastic force of the spring (243) causes the lower supporting slider (24) to move toward the side of the auxiliary buffer unit (4).

6. The self-moving belt conveyor with a buffer adjustment mechanism according to claim 4, characterized in that: The extension rod (242) extends to the end of the fixed block (26) away from the lower supporting slider (24), and a connecting plate (244) is fixedly mounted thereon. The connecting plate (244) extends vertically downward to below the bottom plate (21); Support legs (212) for suspending the bottom plate (21) are arranged on both sides below the bottom plate (21), and a second linear drive (245) is fixedly installed below the bottom plate (21). The working end of the second linear drive (245) is arranged to move in a horizontal direction. The second linear drive (245) is in contact with the connecting plate (244) to push the lower supporting slide block (24) toward the fixed block (26).

Images