Heavy duty accumulation conveyor

Abstract

The present application relates to conveying device technical field, specifically relates to a kind of heavy accumulation and release chain conveying device, including conveying track and accumulation and release trolley, the conveying track is equipped with blocking block, the blocking block has the state of extension and retraction;Accumulation and release trolley includes trolley body, lifting claw and crank arm;The first roller and the second roller are rotatably provided on the trolley body, the first roller and the second roller can roll along the conveying track;Lifting claw is located between the first roller and the second roller, lifting claw is hingedly connected with rack, the second gear is coaxially provided on the second roller, the rack can be engaged with the second gear;The crank arm is hingedly arranged on the trolley body, one end of the crank arm is slidably connected with the lifting claw, the other end of the crank arm is used to cooperate with the blocking block;When accumulation and release trolley is accumulated forward, the second gear is locked, so that the accumulation and release trolley sliding due to the inclination of conveying track can be avoided, ensure that accumulation and release trolley can be normally conveyed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of conveying devices, in particular to a heavy-duty accumulation chain conveying device. BACKGROUND

[0002] The accumulation chain, also known as the accumulation type conveying chain, is an intelligent, efficient and flexible automated conveying equipment, which is widely used in production lines of various industries. The accumulation chain drives the chain to run through the driving device, and transports the workpieces from one process to the next process.

[0003] The patent document with the announcement number CN215665565U discloses a general front trolley of accumulation chain, which includes a trolley body, a lifting claw slidingly connected to the top of the inside of the trolley body, and a chain push head on the accumulation chain, which can push the lifting claw. The lifting claw can be lifted up and down in the trolley body, so as to realize the unhooking of the trolley, and then the trolley can realize the accumulation function. If the track where the trolley is located is inclined, the accumulated trolley will slide along the track under its own gravity before being pushed forward by the push rod on the chain, thereby affecting its normal conveying. SUMMARY

[0004] Therefore, it is necessary to provide a heavy-duty accumulation chain conveying device to solve the technical problem that the current accumulation chain trolley cannot be normally conveyed on the inclined track.

[0005] The above-mentioned purpose is realized by the following technical scheme:

[0006] A heavy-duty accumulation and distribution chain conveying device comprises a conveying track and a plurality of accumulation and distribution trolleys, the conveying track is provided with a blocking block, the blocking block has an extended state and a retracted state; the accumulation and distribution trolley is used for hoisting heavy goods, the accumulation and distribution trolley can move along the conveying track, and the moving direction is the front and back direction; the accumulation and distribution trolley comprises a trolley body, a lifting claw and a crank arm; the trolley body is rotatably provided with a first roller and a second roller, the first roller and the second roller are sequentially and spacedly arranged from front to back and can roll on the conveying track in the front and back directions, the axes of the first roller and the second roller extend along a first direction, and the first direction is a horizontal direction perpendicular to the front and back directions; the lifting claw is T-shaped, the middle part thereof extends in an up and down direction and is located between the first roller and the second roller; the lifting claw is slidably arranged on the trolley body in the up and down direction, and a rack is hinged to the lifting claw, a second gear is coaxially arranged on the second roller; the crank arm is hingedly arranged on the trolley body, one end of the crank arm is slidably connected with the lifting claw, and the other end of the crank arm is used for cooperating with the blocking block; a spring is arranged between the crank arm and the trolley body, the spring has a tendency to push the lifting claw upward; when the accumulation and distribution trolley is accumulated forward, the blocking block is in the extended state, the blocking block and the end of the crank arm away from the lifting claw are in abutting cooperation to pull the lifting claw to slide downward, the lifting claw simultaneously limits the first roller and the second roller to rotate forward, meanwhile, the rack on the lifting claw can mesh with the second gear, and then when the accumulation and distribution trolley is released from the accumulation, the blocking block is in the retracted state, the rack and the second gear still keep meshing to prevent the accumulation and distribution trolley from moving forward and backward.

[0007] Further, a first gear is coaxially arranged on the first roller, the lifting claw can simultaneously press the first gear and the second gear, so as to limit the forward rolling of the first roller and the second roller.

[0008] Further, a guide block is arranged on the trolley body, a guide groove is arranged on the lifting claw, the guide block and the guide groove are both rectangular structures, the guide block and the guide groove slide in cooperation in the up and down direction, a horizontal sliding groove is arranged on the crank arm, a hinge shaft is arranged on the lifting claw, the hinge shaft extends along the first direction, and the hinge shaft can slide in the horizontal sliding groove in the front and back directions.

[0009] Further, a spring is arranged between the crank arm and the trolley body, the spring has a tendency to push the lifting claw upward; the spring is V-shaped, a fixed plate is arranged on the trolley body, one side of the spring abuts against the end of the crank arm close to the lifting claw, and the other side of the spring is detachably connected with the fixed plate.

[0010] Further, the inside of the lifting claw is provided with a rotating groove, the rack is hingedly arranged in the rotating groove around an axis extending in the first direction, the top of the lifting claw is provided with an avoiding groove, the avoiding groove is provided with a lifting block, the lifting block can slide up and down in the avoiding groove, the lower surface of the lifting block is in top pressing cooperation with the upper end surface of the rack, so that the downward movement of the lifting block can drive the rack to rotate in the rotating groove, and the rack is disengaged from the second gear.

[0011] Further, the conveying track comprises parallel arranged upper track and lower track, the upper track is provided with circulating movable driving chain, the driving chain is provided with push rod rotating on it, the lifting block has rearward arranged inclined surface, the push rod in contact with the inclined surface of the lifting block can push the lifting block to slide downward in the avoiding groove, thereby releasing the brake of the second roller, and driving the first roller and the second roller to slide along the lower track.

[0012] Further, the groove bottom of the avoiding groove is provided with compression spring, the compression spring has upward resetting tendency for the lifting block.

[0013] Further, the side wall of the avoiding groove is provided with sliding groove extending in the up-down direction, the sliding groove is provided with two and symmetrically arranged on the front and rear sides of the avoiding groove, the lifting block is provided with sliding block, the sliding block corresponds to the sliding groove one by one and slides up and down.

[0014] Further, the side surface of the lower track is provided with driving air cylinder, the driving air cylinder has piston rod, the blocking block is fixedly connected with the piston rod, the driving air cylinder can make the piston rod extend and retract along the axial direction of the first roller and the second roller, so as to control the blocking block to be in the extended state or the retracted state.

[0015] Further, the blocking block is a wedge-shaped block, the inclined surface of the wedge-shaped block is arranged towards the rear, and the contact between the inclined surface of the wedge-shaped block and the end of the crank away from the lifting claw can promote the rotation of the crank.

[0016] The beneficial effects of the present application are:

[0017] The heavy-duty accumulation and release chain conveying device provided by the present application has the following advantages: first, by arranging the rack and the second gear, the second gear is engaged with the rack when the accumulation and release trolley is stacked, so that when the blocking block is in the retracted state, the rack and the second gear still remain engaged, which can prevent the accumulation and release trolley from moving, and avoid the accumulation and release trolley from automatically sliding along the conveying track due to the inclination of the conveying track after the accumulation and release trolley is released, thereby ensuring that the accumulation and release trolley can be normally conveyed. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The heavy-duty accumulation and release chain conveying device provided by the present application has the following advantages: first, by arranging the rack and the second gear, the second gear is engaged with the rack when the accumulation and release trolley is stacked, so that when the blocking block is in the retracted state, the rack and the second gear still remain engaged, which can prevent the accumulation and release trolley from moving, and avoid the accumulation and release trolley from automatically sliding along the conveying track due to the inclination of the conveying track after the accumulation and release trolley is released, thereby ensuring that the accumulation and release trolley can be normally conveyed.

[0019] Figure 2A structure diagram of the accumulation and release trolley and the conveying track in the heavy accumulation and release chain conveying device provided by an embodiment of the present application Figure 1 ;

[0020] Figure 3 A structure diagram of the accumulation and release trolley and the conveying track in the heavy accumulation and release chain conveying device provided by an embodiment of the present application Figure 2 ;

[0021] Figure 4 A side view diagram of the heavy accumulation and release chain conveying device provided by an embodiment of the present application Figure 3 ;

[0022] Figure 5 A structure diagram of the accumulation and release trolley in the heavy accumulation and release chain conveying device provided by an embodiment of the present application

[0023] Figure 6 A front view diagram of the accumulation and release trolley in the heavy accumulation and release chain conveying device provided by an embodiment of the present application

[0024] Figure 7 An enlarged view of structure A in the heavy accumulation and release chain conveying device provided by an embodiment of the present application Figure 6 ;

[0025] Figure 8 A side view diagram of the accumulation and release trolley in the heavy accumulation and release chain conveying device provided by an embodiment of the present application

[0026] Figure 9 A B-B sectional view of the heavy accumulation and release chain conveying device provided by an embodiment of the present application Figure 8 ;

[0027] Figure 10 Another state diagram of the heavy accumulation and release chain conveying device provided by an embodiment of the present application Figure 9 ;

[0028] Figure 11 An enlarged view of structure C in the heavy accumulation and release chain conveying device provided by an embodiment of the present application Figure 9 ;

[0029] Figure 12 An enlarged view of structure D in the heavy accumulation and release chain conveying device provided by an embodiment of the present application Figure 9 ;

[0030] Figure 13 An enlarged view of structure E in the heavy accumulation and release chain conveying device provided by an embodiment of the present application Figure 9 ;

[0031] Wherein:

[0032] 100, heavy goods; 101, upper rail; 102, lower rail; 103, push rod; 104, C-shaped steel; 105, blocking block; 106, driving cylinder; 110, trolley body; 111, crank arm; 1111, horizontal sliding groove; 112, lifting claw; 1121, hinged shaft; 113, first roller; 114, lifting block; 115, elastic sheet; 116, rack; 117, guide block; 118, second gear; 119, compression spring; 120, second roller; 121, guide wheel; 122, first gear; 130, sliding trolley; 131, jacking rod. DETAILED DESCRIPTION

[0033] In order to make the objects, technical solutions and advantages of the present application clearer, the following further describes the present application with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0034] The serial numbers of components in the present application, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. In the present application, "connection" and "coupling" include direct and indirect connection (coupling) unless otherwise specified. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] In the present application, unless otherwise specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0036] As Figures 1 to 13As shown, an embodiment of the present application provides a heavy-duty stacker conveyor device, which comprises a conveying track and a plurality of stacker trolleys. The stacker trolleys are used to hoist heavy goods 100, and can move along the conveying track in the front-rear direction. The conveying track can be linear or curved. The conveying track is provided with a blocking block 105, which has an extended state and a retracted state.

[0037] The stacker trolley comprises a trolley body 110, a lifting claw 112 and a crank arm 111. The trolley body 110 is rotatably provided with a first roller 113 and a second roller 120. The first roller 113 and the second roller 120 are arranged in sequence and spaced apart from each other from front to rear, and the axes of the first roller 113 and the second roller 120 extend in a first direction, which is a horizontal direction perpendicular to the front-rear direction. The first roller 113 and the second roller 120 can roll forward and backward on the conveying track.

[0038] The lifting claw 112 is T-shaped, with a middle part extending in the up-down direction and located between the first roller 113 and the second roller 120. The lifting claw 112 is slidingly arranged on the trolley body 110 in the up-down direction, and a rack 116 is hinged to the lifting claw 112. A second gear 118 is coaxially arranged on the second roller 120. The crank arm 111 is hingedly arranged on the trolley body 110, with one end slidingly connected to the lifting claw 112 and the other end used to cooperate with the blocking block 105.

[0039] When the stacker trolley is being stacked forward, the blocking block 105 is in the extended state, and the blocking block 105 and the end of the crank arm 111 away from the lifting claw 112 are in abutting cooperation, so that the crank arm 111 rotates around the horizontal axis, thereby pulling the lifting claw 112 to slide downward. The lifting claw 112 can simultaneously restrict the forward rotation of the first roller 113 and the second roller 120, and the rack 116 on the lifting claw 112 can engage with the second gear 118. When the stacker trolley is being unloaded, the blocking block 105 is in the retracted state, and the rack 116 and the second gear 118 still remain in engagement to prevent the forward and backward movement of the stacker trolley.

[0040] Specifically, the first roller 113 is coaxially and fixedly provided with a first gear 122, and the second roller 120 is coaxially and fixedly provided with a second gear 118. The lifting claw 112 can simultaneously press the first gear 122 and the second gear 118, thereby restricting the forward rolling of the first roller and the second roller.

[0041] The lifting claw 112 has two pressing parts distributed along the front-rear direction, and the middle part of the two pressing parts is a vertical part located between the first roller 113 and the second roller 120. When the lifting claw 112 is lowered, the two pressing parts are in contact with and press against the outer circumferential surfaces of the first gear 122 and the second gear 118 respectively, thereby limiting the forward rolling of the first roller 113 and the second roller 120 and further limiting the movement of the trolley body 110 on the conveying track. In other embodiments, the first gear 122 can be replaced by a rubber wheel.

[0042] The first roller 113 and the second roller 120 are both rubber wheels, and the first roller 113 and the second roller 120 are both provided with two along the axial direction, and the first roller 113 and the second roller 120 correspond to each other in the front-rear direction.

[0043] In this embodiment, since the heavy cargo 100 has a large volume, in order to ensure the balance of lifting, three sliding trolleys 130 are further provided on the conveying track behind the stacking trolley, and the three sliding trolleys 130 cooperate with the spreader to jointly lift a heavy cargo 100. A top rod 131 is provided on the last sliding trolley 130, and the top rod 131 can be stopped by cooperating with the crank arm 111 on the rear stacking trolley, so that the rear stacking trolley automatically stops sliding forward.

[0044] In this way, when the stacking trolley is stacked forward, the lifting claw 112 slides downward while contacting and pressing the first gear 122 and the second gear 118, preventing the first roller 113 and the second roller 120 from rolling forward, so that the stacking trolley stops advancing along the conveying track; at the same time, the rack 116 on the lifting claw 112 can engage with the second gear 118, so that the second gear 118 is locked. When the stacking trolley is unstacked, the blocking block 105 is in the retracted state, the rack 116 moves upward synchronously so that the second gear 118 has a tendency to rotate backward, and the second roller 120 has a tendency to roll away from the blocking block 105. Since the rear of the second roller 120 has a plurality of stacking trolleys, the second roller 120 cannot overcome the static friction of the plurality of stacking trolleys to roll backward, that is, the stacking trolley cannot move backward. At this time, the conveying track is inclined forward, so that the first roller 113 and the second roller 120 of the stacking trolley have a tendency to roll forward, and then the forward rolling of the second roller 120 will make the rack 116 move downward, and then the rack 116 drives the lifting claw 112 to move downward again to press the first gear 122 and the second gear 118, so that the first roller 113 and the second roller 120 cannot continue to roll forward, that is, the stacking trolley also cannot move forward. In this way, the stacking trolley cannot move forward and backward, avoiding the automatic sliding of the stacking trolley along the conveying track due to the inclination of the conveying track after the stacking trolley is unstacked, so as to ensure that the stacking trolley can be normally conveyed.

[0045] Further, the trolley body 110 is provided with a guide block 117, and the lifting claw 112 is provided with a guide groove, both of which are rectangular structures, and the guide block 117 and the guide groove are slidably matched in the up-down direction.

[0046] In this way, it is ensured that the lifting claw 112 can only slide in the up-down direction, so that the trajectory of the lifting claw 112 in the up-down movement is more accurate, and the conditions such as skewing and shaking are avoided, thereby ensuring the accurate and reliable cooperation between the lifting claw 112 and the first gear 122 and the second gear 118.

[0047] The toggle arm 111 is provided with a horizontal sliding groove 1111, and the lifting claw 112 is provided with a hinge shaft 1121 extending in the first direction, and the hinge shaft 1121 can slide in the horizontal sliding groove 1111.

[0048] When the toggle arm 111 rotates around the horizontal axis, the trajectory of the end portion is arc-shaped. Through the sliding cooperation of the horizontal sliding groove 1111 and the hinge shaft 1121, the arc-shaped rotation of the toggle arm 111 can be converted into the up-down direction sliding of the lifting claw 112, and the relative sliding of the hinge shaft 1121 along the horizontal sliding groove 1111 can compensate for the horizontal displacement component of the toggle arm 111 during rotation, so as to only retain the vertical driving force of the lifting claw 112, thereby ensuring that the lifting claw 112 moves strictly in the up-down direction and avoiding movement interference.

[0049] Further, the toggle arm 111 and the trolley body 110 are provided with an elastic sheet 115, the elastic sheet 115 has a tendency to push the lifting claw 112 upward, the elastic sheet 115 is V-shaped, the trolley body 110 is provided with a fixed plate, one side of the elastic sheet 115 is in abutting pressure cooperation with one end of the toggle arm 111 close to the lifting claw 112, and the other side of the elastic sheet 115 is detachably connected with the fixed plate.

[0050] When the toggle arm 111 is triggered to rotate around the horizontal axis by the blocking block 105, one side arm of the V-shaped elastic sheet 115 is extruded, so that the elastic sheet 115 is elastically deformed, and the V-shaped angle is reduced; and after the blocking block 105 removes the blockage of the toggle arm 111, the deformation potential energy of the elastic sheet 115 is converted into a pressing force in the reset direction of the toggle arm 111, so as to push the toggle arm 111 back to the initial position.

[0051] Further, the inside of the lifting claw 112 is provided with a rotating groove, the rack 116 is hingedly arranged in the rotating groove around an axis extending in the first direction, the top of the lifting claw 112 is provided with an avoiding groove, the avoiding groove is provided with a lifting block 114, the lifting block 114 can slide up and down in the avoiding groove, the lower surface of the lifting block 114 is in abutting pressure cooperation with the upper end surface of the rack 116, so that the downward movement of the lifting block 114 can drive the rack 116 to rotate in the rotating groove, so that the rack 116 is disengaged from the second gear 118.

[0052] By converting the vertical downward movement of the lifting block 114 into the rotation of the rack 116 in the rotating groove, the rack 116 can be quickly disengaged from the second gear 118, so that the accumulation trolley can move smoothly.

[0053] The articulated position of the rack 116 and the rotating groove is also provided with a torsion spring, which can reset the rack 116, so that the rack 116 can be re-engaged with the second gear 118.

[0054] Further, the conveying track includes a parallelly arranged upper track 101 and a lower track 102, the upper track 101 is provided with a circularly movable driving chain, the driving chain is provided with a push rod 103 rotating thereon, the lifting block 114 has a slope arranged towards the rear, the contact between the push rod 103 and the slope of the lifting block 114 can push the lifting block 114 to slide downward in the avoiding groove, thereby releasing the brake on the second roller 120, and driving the first roller 113 and the second roller 120 to slide along the lower track 102.

[0055] The upper track 101 is a hollow steel structure, the driving chain is provided with a rolling wheel, the rolling wheel is located in the upper track 101 and can slide along the upper track 101, and the driving chain is located at the bottom of the upper track 101.

[0056] The lower track 102 is composed of two U-shaped I-beams, the two U-shaped I-beams are arranged at intervals and the openings are oppositely arranged. Two first rollers 113 slide along the inside of one I-beam respectively, and two second rollers 120 slide along the inside of one I-beam respectively. The upper track 101 and the lower track 102 are fixedly connected by bolts and C-shaped steel 104. The sliding trolley 130 is provided with a pulley, which can slide along the lower track 102. The trolley body 110 is also provided with a guide wheel 121, which has two front and rear guide wheels 121. The axis of the guide wheel 121 extends in the upward and downward direction, and the guide wheel 121 can roll in the interval between the two U-shaped I-beams.

[0057] The push rod 103 is arranged on the driving chain and rotates around a horizontal axis, the push rod 103 has a horizontal state and a vertical state, when the push rod 103 is in the horizontal state, the push rod 103 does not contact the lifting block 114, when the push rod 103 is in the vertical state, the push rod 103 can contact the lifting block 114.

[0058] The inclined surface is arranged on the lifting block 114, when the push rod 103 is in contact with the inclined surface of the lifting block 114, the pushing force is decomposed into a vertical downward component force along the inclined surface, the downward component force can push the lifting block 114 to move downward to release the engagement between the rack 116 and the second gear 118, meanwhile, the pushing force is also decomposed into a horizontal forward component force, the horizontal forward component force can drive the accumulation trolley to forwardly convey.

[0059] Further, the groove bottom of the avoiding groove is provided with a compression spring 119, the compression spring 119 has a tendency to reset the lifting block 114 upward.

[0060] The compression spring 119 is used to reset the lifting block 114 when the accumulation trolley moves to a certain point position, thereby facilitating the subsequent push fitting with the push rod 103 again.

[0061] Further, the side wall of the avoiding groove is provided with a sliding groove extending in the up-down direction, the sliding groove is arranged on the front and rear sides of the avoiding groove in a symmetrical manner, the lifting block 114 is provided with a sliding block, the sliding block corresponds to the sliding groove in a one-to-one manner and is in up-down sliding fitting.

[0062] Further, the side surface of the lower rail 102 is provided with a driving cylinder 106, the driving cylinder 106 has a piston rod, the blocking block 105 is fixedly connected with the piston rod, the driving cylinder 106 can make the piston rod extend and retract along the axial direction of the first roller 113 and the second roller 120, thereby controlling the blocking block 105 to be in the extended state or the retracted state.

[0063] Further, the blocking block 105 is a wedge-shaped block, the inclined surface of the wedge-shaped block is arranged towards the rear, the contact between the inclined surface of the wedge-shaped block and the end of the toggle arm 111 away from the lifting claw 112 can promote the toggle arm 111 to rotate.

[0064] The contact between the inclined surface of the wedge-shaped block and the toggle arm 111 is progressive, which can effectively absorb impact energy, avoid rigid collision and prolong the service life of the accumulation trolley.

[0065] In combination with the above embodiment, the use principle and working process of the embodiment of the present application are as follows:

[0066] The heavy goods 100 are hoisted on the accumulation trolley and the sliding trolley 130, then the accumulation trolley, the sliding trolley and the hoisted heavy goods 100 move forward along the lower rail 102 with the movement of the driving chain. When it is needed to stack the heavy goods 100, the piston rod of the driving cylinder 106 at the corresponding position is controlled to be elongated, so that the blocking block 105 is in the extended state, the blocking block 105 blocks the foremost accumulation trolley, as shown in the figure, the blocking block 105 will be in stop cooperation with the toggle arm 111, so that the toggle arm 111 rotates in the clockwise direction (as shown by the arrow in the figure). Figure 9 The toggle arm 111 drives the lifting claw 112 to rotate in the clockwise direction (as shown by the arrow in the figure), so that the lifting claw 112 is in engagement with the lifting block 114, the lifting block 114 is lifted to the position shown in the figure, the lifting block 114 is in engagement with the rack 116, the second gear 118 is in engagement with the rack 116, and the second gear 118 is in engagement with the first gear 117, so that the first gear 117 is driven to rotate in the clockwise direction (as shown by the arrow in the figure). Figure 2When the heavy cargo 100 is in the process of being stacked on the lower track 102, the first roller 113 and the second roller 120 are in the state of being locked by the first gear 122 and the second gear 118, and the first gear 122 and the second gear 118 are in the state of being pressed by the lifting claw 112. When the heavy cargo 100 is in the process of being unloaded from the lower track 102, the first roller 113 and the second roller 120 are in the state of being unlocked by the first gear 122 and the second gear 118, and the first gear 122 and the second gear 118 are in the state of being released by the lifting claw 112.

[0067] The top rod 131 on the rear sliding trolley 130 of the heavy cargo 100 can make the toggle arm 111 on the rear accumulation trolley rotate clockwise, and then make the lifting claw 112 on the rear accumulation trolley slide downward, and the lifting claw 112 simultaneously contacts and presses the first gear 122 and the second gear 118 of the rear accumulation trolley, so that the first roller 113 and the second roller 120 cannot move, and then the rear accumulation trolley stops advancing along the lower track 102; at the same time, the rack 116 on the lifting claw 112 of the rear accumulation trolley can engage with the second gear 118, so that the second roller 120 is also locked.

[0068] In this way, the heavy cargo 100 is stacked on the lower track 102 in sequence.

[0069] After the heavy cargo 100 is processed, the heavy cargo 100 needs to enter the next process. First, the blocking block 105 is in the retracted state by driving the cylinder 106, and the toggle arm 111 rotates counterclockwise under the action of the elastic potential energy of the spring 115. At this time, the lifting claw 112 slides upward, and the lifting claw 112 no longer presses the first gear 122 and the second gear 118, so that the first roller 113 and the second roller 120 can rotate, and at the same time, the rack 116 moves upward synchronously, so that the second gear 118 has a tendency to rotate clockwise, and then the second gear 118 makes the second roller 120 have a tendency to roll backward. Since the rear of the second roller 120 has a plurality of accumulation trolleys, the second roller 120 cannot overcome the static friction of the plurality of accumulation trolleys to roll backward, that is, the accumulation trolley cannot move backward. If the conveying track is inclined forward at this time, the first roller 113 and the second roller 120 of the accumulation trolley have a tendency to roll forward, and then the forward rolling of the second roller 120 moves the rack 116 downward through the second gear 118, and then the rack 116 drives the lifting claw 112 to move downward again, so that the first gear 122 and the second gear 118 are pressed again, and the first roller 113 and the second roller 120 cannot roll forward, that is, the accumulation trolley also cannot move forward. In this way, the accumulation trolley cannot move forward and backward, so as to avoid the accumulation trolley from automatically sliding along the conveying track due to the inclination of the conveying track after the accumulation trolley is unloaded.

[0070] Then the push rod 103 on the driving chain is controlled to rotate to the vertical state, the push rod 103 pushes the lifting block 114 on the accumulation trolley, and the lifting block 114 slides downward in the avoiding slot of the lifting claw 112. Figure 10 As shown in the figure, at this time the lifting block 114 pushes the rack 116 to rotate in the rotating slot, and the rack 116 is disengaged from the second gear 118. At this time the second roller 120 can roll forward, and under the elastic potential energy of the elastic sheet 115, the lifting claw 112 is not hindered by the second gear 118 and can automatically reset upward, so that the lifting claw 112 is no longer pressed against the first gear 122 and the second gear 118, then the first roller 113 and the second roller 120 can roll forward, and then under the pushing action of the push rod 103, the accumulation trolley drives the heavy goods 100 to continue to slide forward along the lower rail 102.

[0071] The technical features of the above embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0072] The above embodiments only express several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of variations and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A heavy-duty drag chain conveyor characterized by, Comprise: A conveying track, a blocking block is arranged on the conveying track, the blocking block has an extended state and a retracted state; A plurality of accumulation trolleys, the accumulation trolleys are used for hoisting heavy goods, the accumulation trolleys can move along the conveying track, and the moving direction is the front-back direction; The accumulation trolley comprises a trolley body, a lifting claw and a crank arm; The trolley body is rotationally provided with a first roller and a second roller, the first roller and the second roller are sequentially and spacedly arranged from front to back and can roll on the conveying track in the front-back direction, the axes of the first roller and the second roller extend along a first direction, and the first direction is a horizontal direction perpendicular to the front-back direction; The lifting claw is T-shaped, the middle part thereof extends in the up-down direction and is located between the first roller and the second roller; the lifting claw is slidingly arranged on the trolley body in the up-down direction, and a rack is hingedly arranged on the lifting claw; and a second gear is coaxially arranged on the second roller; The crank arm is hingedly arranged on the trolley body, one end of the crank arm is slidingly connected with the lifting claw, and the other end of the crank arm is used for cooperating with the blocking block; When the accumulation trolley is accumulated forward, the blocking block is in the extended state, the blocking block and the end of the crank arm away from the lifting claw are in abutting cooperation, the lifting claw can be pulled to slide downward, the lifting claw can simultaneously limit the forward rolling of the first roller and the second roller, the rack on the lifting claw can be engaged with the second gear, and when the accumulation trolley is released, the blocking block is in the retracted state, the rack and the second gear still remain in engagement, so that the accumulation trolley is prevented from moving forward and backward.

2. The heavy-duty drag chain conveyer according to claim 1, characterized in that, The first roller is coaxially provided with a first gear, and the lifting claw can simultaneously press the first gear and the second gear, so as to limit the forward rolling of the first roller and the second roller.

3. The heavy duty drag chain conveyor according to claim 2, characterized in that The trolley body is provided with a guide block, the lifting claw is provided with a guide groove, the guide block and the guide groove are both rectangular structures, the guide block and the guide groove are slidingly matched in the up-down direction, the crank arm is provided with a horizontal sliding groove, the lifting claw is provided with a hinge shaft, the hinge shaft extends along the first direction, and the hinge shaft can slide along the horizontal sliding groove in the front-back direction.

4. The heavy duty drag chain conveyor according to claim 3, characterized in that A spring sheet is arranged between the crank arm and the trolley body, the spring sheet has a tendency of pushing the lifting claw upward. The spring sheet is V-shaped, the trolley body is provided with a fixed plate, one side of the spring sheet is in abutting cooperation with the end of the crank arm close to the lifting claw, and the other side of the spring sheet is detachably connected with the fixed plate.

5. The heavy duty drag chain conveyor according to claim 4, characterized in that The lifting claw is internally provided with a rotating groove, the rack is hingedly arranged in the rotating groove along an axis extending in the first direction, the top of the lifting claw is provided with an avoiding groove, the avoiding groove is provided with a lifting block, the lifting block can slide in the avoiding groove in the up-down direction, the lower surface of the lifting block is in abutting cooperation with the upper end surface of the rack, so that the downward movement of the lifting block can drive the rack to rotate in the rotating groove, the rack is disengaged from the second gear.

6. The heavy duty drag chain conveyor according to claim 5, characterized in that The conveying track comprises parallel arranged upper and lower tracks, the upper track is provided with a driving chain capable of circularly moving, the driving chain is rotationally provided with a push rod, the lifting block has an inclined surface arranged toward the rear, and the push rod in contact with the inclined surface of the lifting block can push the lifting block to slide downward in the avoiding groove, so as to release the brake of the second roller and drive the first roller and the second roller to slide along the lower track.

7. The heavy duty drag chain conveyor according to claim 6, characterized in that The bottom of the avoiding groove is provided with a compression spring, which has a tendency to upwardly reset the lifting block.

8. The heavy duty drag chain conveyor according to claim 7, characterized in that The sidewall of the avoiding groove is provided with a sliding groove extending in the up-down direction, the sliding groove is arranged symmetrically on the front and back sides of the avoiding groove, the lifting block is provided with a sliding block, and the sliding block is in one-to-one correspondence with the sliding groove and is in up-down sliding fit.

9. The heavy duty drag chain conveyor according to claim 6, characterized in that The side of the lower track is provided with a driving cylinder, the driving cylinder is provided with a piston rod, the blocking block is fixedly connected with the piston rod, the driving cylinder can make the piston rod extend and retract along the axial direction of the first roller and the second roller, so that the blocking block is controlled to be in the extended state or the retracted state.

10. The heavy duty drag chain conveyor according to claim 9, characterized in that The blocking block is a wedge-shaped block, the inclined surface of the wedge-shaped block is arranged towards the rear, and the inclined surface of the wedge-shaped block is in contact with the end of the crank away from the lifting claw, so that the crank is rotated.

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