Construction muck screening device

Abstract

The utility model discloses a construction muck screening device. The construction muck screening device comprises a base and a plurality of sets of screening wheels installed on the base in a vibrating mode through a vibrating motor. The device further comprises a discharging assembly which is installed on the base. The discharging assembly comprises a conveying rod and a push plate. The pair of conveying rods are arranged on the base and located on the two sides of the multiple sets of screening wheels correspondingly. The pair of conveying rods are arranged in the discharging direction of the base in a full-length mode. The push plate is movably arranged on the pair of conveying rods and located below the multiple sets of screening wheels, and the bottom face of the push plate is in sliding contact with the bottom face of the soil cavity of the base. The utility model relates to the technical field of tunnel shield construction, and can solve the problem that in the prior art, a construction muck screening device is inconvenient to discharge soil.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel shield construction, in particular to a construction muck screening device. Background Art

[0002] During the tunnel shield construction process, after the muck is sent out through the conveyor belt, in order to facilitate the reuse or treatment of the muck, it is necessary to screen the slag stones and soil in the muck. After the construction muck screening device of the prior art screens the muck through a vibrating screening wheel, although the soil and slag stones can be separated to a large extent, the separated soil and slag stones are respectively located below and above the screening wheel, and the chamber for collecting soil is relatively closed, and the feeding is inconvenient, which affects the screening efficiency of the muck. Therefore, it is necessary to provide a construction muck screening device that can solve the problem of inconvenient soil feeding in the construction muck screening device of the prior art. Summary of the Invention

[0003] The purpose of the utility model is to provide a construction muck screening device that can solve the problem of inconvenient soil feeding in the construction muck screening device of the prior art.

[0004] The utility model is realized as follows:

[0005] A construction muck screening device includes a base and a plurality of groups of screening wheels that are vibratably installed on the base through vibration motors;

[0006] The construction muck screening device further includes a feeding assembly installed on the base; the feeding assembly includes a transmission rod and a push plate; a pair of transmission rods are respectively arranged on the base and on both sides of the plurality of groups of screening wheels, and the pair of transmission rods are arranged along the entire length in the feeding direction of the base; the push plate is movably arranged on the pair of transmission rods, the push plate is located below the plurality of groups of screening wheels, and the bottom surface of the push plate is in sliding contact with the bottom surface of the soil chamber of the base.

[0007] The feeding assembly further includes a driving wheel and a transmission mechanism; one end of the pair of transmission rods far away from the feeding chute penetrates through the base and is respectively coaxially fixed with a driving wheel, the transmission mechanism is arranged on the base, and the pair of driving wheels are in transmission connection with the transmission mechanism.

[0008] The transmission mechanism includes a linkage chain, a rotating wheel and a driving motor; the driving motor is installed on the outer wall of the base, and the rotating wheel is coaxially fixed on the output shaft of the driving motor; the rotating wheel is located between the pair of driving wheels, and the linkage chain is in transmission connection between the rotating wheel and the pair of driving wheels.

[0009] External threads are formed on the pair of transmission rods, and threaded holes matching the transmission rods are formed at both ends of the push plate, so that both ends of the push plate are movably arranged on the pair of transmission rods.

[0010] A positioning device is provided between the linkage chain and the base, and the linkage chain is locked on the outer wall of the base through the positioning device.

[0011] The positioning device includes a clamping block, a supporting block and a guiding mechanism; the clamping block is fixedly arranged on the outer wall of the base, and the top plate of the Z-shaped clamping block is attached to the bottom surface of the linkage chain; the supporting block is arranged on the clamping block in a liftable manner through the guiding mechanism, and the top plate of the Z-shaped supporting block is located above the top surface of the linkage chain in a liftable manner, so that the top plate of the supporting block can press the linkage chain against the top plate of the clamping block.

[0012] The guiding mechanism includes an adjusting rod, the adjusting rod is arranged through the bottom plates of the clamping block and the supporting block, the lower part of the adjusting rod is rotatably arranged on the bottom plate of the clamping block, a threaded hole is formed on the bottom plate of the supporting block, and a threaded section matching the threaded hole is formed on the upper part of the adjusting rod, so that the supporting block is connected to the clamping block through threaded transmission.

[0013] The middle vertical plate of the clamping block serves as a guiding plate, and a vertical guiding groove is formed on the guiding plate; a guiding block is arranged on the surface of the middle vertical plate of the supporting block facing the guiding plate, and the guiding block is slidably installed in the guiding groove.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. Since the utility model is provided with a blanking device, the driving motor drives a pair of transmission rods to rotate synchronously through the rotating wheel, the linkage chain and the driving wheel, and then the push plate slides from the side of the base far away from the blanking chute to the blanking chute through threaded transmission, so as to push the soil in the base chamber out to the blanking chute, which is convenient for the blanking of the soil under multiple screening wheels, ensures the high efficiency and convenience of the soil blanking, is beneficial to assisting the screening operation of the muck during the shield construction, and improves the screening efficiency.

[0016] 2. Since the utility model is provided with a positioning device, the linkage chain can be locked on the clamping block by lifting the supporting block, so that the linkage chain is locked on the base by the supporting block and the clamping block during the muck screening process, avoiding the accidental sliding of the push plate, and facilitating the subsequent pushing of all the soil in the base chamber to the blanking chute at one time. Description of the Drawings

[0017] Figure 1 is a perspective view of one side of the muck screening device of the utility model;

[0018] Figure 2 is a perspective view of the other side of the muck screening device of the utility model;

[0019] Figure 3 is Figure 2 the enlarged schematic view of part A in

[0020] Figure 4It is the perspective view from below of the construction waste screening device of the utility model;

[0021] Figure 5 It is Figure 4 The enlarged schematic view at position B in

[0022] In the figure, 1 is the base; 11 is the blanking chute; 2 is the screening wheel; 21 is the vibration motor; 3 is the blanking device; 31 is the transmission rod; 32 is the push plate; 33 is the driving wheel; 34 is the linkage chain; 35 is the rotating wheel; 36 is the driving motor; 4 is the positioning device; 41 is the clamping block; 42 is the supporting block; 43 is the guiding plate; 44 is the adjusting rod; 45 is the guiding groove. Specific embodiments

[0023] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Please refer to the attached Figure 1 to the attached Figure 3 , a construction waste screening device, comprising a base 1 and a plurality of groups of screening wheels 2 which are vibratably mounted on the base 1 through a vibration motor 21. The construction waste screening device further comprises a blanking assembly 3 which is mounted on the base 1; the blanking assembly 3 comprises a transmission rod 31 and a push plate 32; a pair of transmission rods 31 are respectively arranged on the base 1 and are located on both sides of the plurality of groups of screening wheels 2, and the pair of transmission rods 31 are arranged along the blanking direction of the base 1 in a full-length manner; the push plate 32 is movably arranged on the pair of transmission rods 31, the push plate 32 is located below the plurality of groups of screening wheels 2, and the bottom surface of the push plate 32 is in sliding contact with the bottom surface of the soil chamber of the base 1.

[0025] Pour the construction waste on the plurality of groups of screening wheels 2, and the vibration motor 21 provides rotational and vibration forces for the plurality of groups of screening wheels 2, so as to separate the stones and soil in the construction waste and realize the screening operation. The base 1 and the screening wheels 2 are conventional structures of the construction waste screening device in the prior art, and the working process and working principle thereof will not be elaborated herein.

[0026] The screened soil falls into the chamber of the base 1 below the plurality of groups of screening wheels 2. In order to facilitate the blanking of the soil, a blanking assembly 3 is provided, and its working process is as follows: the push plate 32 moves along the pair of transmission rods 31, so that the push plate 32 pushes the soil in the chamber downward along the blanking chute 11 during the movement, thereby completing the blanking through the blanking chute 11, and solving the problem of inconvenient blanking of the soil in the construction waste screening device of the prior art.

[0027] The height of the push plate 32 is slightly lower than the low end of the screening wheel 2 to ensure that all the soil in the chamber is pushed out onto the blanking chute 11 at one time. The length of the push plate 32 is slightly greater than the width of the chamber, so that both ends of the push plate 32 and a pair of transmission rods 31 are located outside the screening range of several groups of screening wheels 2, ensuring that no soil accumulates at the connection of the push plate 32 and the transmission rods 31, thereby ensuring the smooth movement of the push plate 32 along a pair of transmission rods 31.

[0028] Preferably, an installation groove matching the push plate 32 can be provided on the inner wall of the base 1 for installing the push plate 32 when it is not in use.

[0029] Please refer to the appendix Figure 3 , the blanking assembly 3 further includes a driving wheel 33 and a transmission mechanism; one end of a pair of transmission rods 31 far from the blanking chute 11 penetrates through the base 1 and is coaxially and fixedly connected with a driving wheel 33 respectively, the transmission mechanism is arranged on the base 1, and a pair of driving wheels 33 are in transmission connection with the transmission mechanism.

[0030] The transmission mechanism drives the driving wheels 33 on a pair of transmission rods 31 to rotate synchronously, so that a pair of transmission rods 31 rotate synchronously to drive both ends of the push plate 32 to move synchronously.

[0031] Please refer to the appendix Figure 3 , the transmission mechanism includes a linkage chain 34, a rotating wheel 35 and a driving motor 36; the driving motor 36 is installed on the outer wall of the base 1 through a bracket, and the rotating wheel 35 is coaxially and fixedly connected to the output shaft of the driving motor 36; the rotating wheel 35 is located between a pair of driving wheels 33, and the linkage chain 34 is in transmission connection between the rotating wheel 35 and a pair of driving wheels 33.

[0032] Preferably, the rotating wheel 35 can be a gear, and the linkage chain 34 can be a toothed chain. The toothed meshing method is used to ensure the synchronous transmission effect of the rotating wheel 35 on the linkage chain 34 and avoid slipping. At the same time, the diameters of a pair of driving wheels 33 are the same, the diameter of the rotating wheel 35 can be larger than the diameter of the driving wheels 33, and the linkage chain 34 is kept under a certain tension between a pair of driving wheels 33, so that the rotating wheel 35 effectively meshes and drives the linkage chain 34 to avoid slipping, and synchronously drives a pair of driving wheels 33 through the linkage chain 34.

[0033] The linkage chain 34, the rotating wheel 35 and the driving wheels 33 are conventional transmission methods in the art, and conventional connection and arrangement methods can be used to ensure the transmission synchronism between the linkage chain 34, the rotating wheel 35 and the driving wheels 33 and no slipping.

[0034] Preferably, the drive motor 36 can be a small motor with a bidirectional rotation function, and the motor power can be adaptively selected according to the actual driving requirements. The drive motor 36 is used to drive the rotating wheel 35 to rotate forward or backward, so as to drive a pair of driving wheels 33 to rotate forward or backward synchronously through the linkage chain 34, facilitating the realization of the reciprocating movement of the push plate 32 in both directions.

[0035] Please refer to the appendix Figure 3 , external threads are formed on the pair of transmission rods 31 (not shown in the figure), and threaded holes matching the transmission rods 31 are formed at both ends of the push plate 32 (not shown in the figure), so that both ends of the push plate 32 can be movably arranged on the pair of transmission rods 31.

[0036] Preferably, the pair of transmission rods 31 can be installed on the base 1 by using rotating bearing seats to ensure that the pair of transmission rods 31 rotate forward or backward synchronously driven by the pair of driving wheels 33. When setting the external threads on the pair of transmission rods 31 and the threaded holes at both ends of the push plate 32, attention should be paid to the matching of the screw drive to ensure that the movement directions of both ends of the push plate 32 are the same.

[0037] Under the action of the screw drive, the rotation of the pair of transmission rods 31 is converted into the linear motion of the push plate 32 along the axial direction of the transmission rod 31, thereby realizing the pushing function of the push plate 32 on the soil and the return function after the pushing is completed.

[0038] Please refer to the appendix Figure 1 , a positioning device 4 is provided between the linkage chain 34 and the base 1, and the linkage chain 34 is locked on the outer wall of the base 1 through the positioning device 4.

[0039] Since the push plate 32 is at one end of the base 1 away from the blanking chute 11 and remains stationary during the screening operation, under the frequent vibration of the vibration motor 21, it may cause small-scale transmission movements between the linkage chain 34, the rotating wheel 35 and the driving wheel 33, and between the transmission rod 31 and the push plate 32, resulting in the premature slippage of the push plate 32. Furthermore, it will cause soil to accumulate on the side of the push plate 32 away from the blanking chute 11, and this accumulated soil cannot be pushed out by the push plate 32 and will affect the return of the push plate 32. Therefore, the positioning device 4 is used to lock the linkage chain 34, and then the push plate 32 is kept stationary at one end of the base 1 away from the blanking chute 11 to avoid accidental slippage.

[0040] Please refer to the appendix Figure 4 and the appendix Figure 5, the positioning device 4 includes a clamping block 41, a supporting block 42 and a guiding mechanism; the clamping block 41 is fixedly arranged on the outer wall of the base 1, and the top plate of the Z-shaped clamping block 41 is attached to the bottom surface of the linkage chain 34; the supporting block 42 is arranged on the clamping block 41 in a liftable manner through the guiding mechanism, and the top plate of the Z-shaped supporting block 42 is located above the top surface of the linkage chain 34 in a liftable manner, so that the top plate of the supporting block 42 can press the linkage chain 34 against the top plate of the clamping block 41.

[0041] The clamping block 41 is fixed on the base, so that the top plate of the clamping block 41 is located at the bottom of the linkage chain 34. When the supporting block 42 descends through the guiding mechanism until the top plate of the supporting block 42 presses the linkage chain 34 against the top plate of the clamping block 41, the linkage chain 34 can be locked, thereby preventing the transmission of the linkage chain 34 to the driving wheel 33, and further preventing the transmission of the transmission rod 31 and the push plate 32, ensuring the locking of the push plate 32.

[0042] Please refer to the appendix Figure 5 , the guiding mechanism includes an adjusting rod 44, the adjusting rod 44 is arranged through the bottom plates of the clamping block 41 and the supporting block 42, the lower part of the adjusting rod 44 is rotatably arranged on the bottom plate of the clamping block 41 through a rotating bearing, a threaded hole (not shown in the figure) is formed on the bottom plate of the supporting block 42, and a threaded section (not shown in the figure) matching the threaded hole is formed on the upper part of the adjusting rod 44, so that the supporting block 42 is connected to the clamping block 41 through threaded transmission.

[0043] Preferably, the adjusting rod 44 can be a screw rod. By using the threaded transmission between the screw rod and the threaded hole on the bottom plate of the supporting block 42, the rotation of the adjusting rod 44 is converted into the lifting movement of the supporting block 42 along the axial direction of the adjusting rod 44, so as to control the pressing or releasing of the top plate of the supporting block 42 on the linkage chain 34 on the top plate of the clamping block 41, achieving the purpose of locking and unlocking.

[0044] Please refer to the appendix Figure 5 , the middle vertical plate of the clamping block 41 serves as a guiding plate 43, and a vertical guiding groove 45 is formed on the guiding plate 43; a guiding block (not shown in the figure) is arranged on the surface of the middle vertical plate of the supporting block 42 facing the guiding plate 43, and the guiding block is slidably fitted in the guiding groove 45.

[0045] By using the sliding of the guiding block in the guiding groove 45, the movement track of the supporting block 42 is restricted, ensuring that the supporting block 42 can only move up and down, and also ensuring the movement stability and controllability of the supporting block 42, avoiding the situation that the supporting block 42 rotates under the influence of the threaded transmission and cannot press the linkage chain 34.

[0046] Please refer to the appendix Figure 1 to the appendix Figure 5 , the usage method and working principle of the present utility model are as follows:

[0047] Dump the muck on each group of screening wheels 2 on the base 1. Start the vibration motors 21 of each group of screening wheels. Use the rotation and vibration of the wheels to effectively screen the muck stones and soil in the muck. The screened muck stones and soil are respectively located above and below each group of screening wheels 2. The screening structure and method of the muck stones and soil are conventional structures and operating means in the field, and will not be elaborated here.

[0048] When a batch of muck screening is completed, turn off the vibration motors 21 and perform the feeding operation. Start the driving motor 36 to rotate forward. The driving motor 36 drives the rotating wheel 35 to rotate. The rotating wheel 35 drives the linkage chain 34. The linkage chain 34 drives a pair of driving wheels 33 to rotate synchronously. A pair of driving wheels 33 drive a pair of conveying rods 31 to rotate synchronously.

[0049] During the rotation of a pair of conveying rods 31, use screw transmission to move the push plate 32 from the side away from the feeding chute 11 towards the feeding chute 11, so as to push the soil screened in the chamber below the screening wheel 2 into the feeding chute 11 for easy feeding. After the soil feeding is completed, use conventional methods such as rotating the screening wheel 2 to feed the muck stones above the screening wheel 2, which will not be elaborated here.

[0050] Start the driving motor 36 to rotate in the reverse direction. Through the sequential transmission of the rotating wheel 35, the linkage chain 34, a pair of driving wheels 33 and a pair of conveying rods 31, the push plate 32 is returned to its original position.

[0051] Repeat the above steps to perform the screening operation of the next batch of muck.

[0052] The above is only the preferred embodiment of the present utility model, and is not used to limit the protection scope of the present utility model. Therefore, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A construction waste screening device, comprising a base (1) and a plurality of screening wheels (2) vibratingly mounted on the base (1) via a vibrating motor (21); wherein: The construction waste screening device further comprises a material discharge assembly (3), which is mounted on the base (1); the material discharge assembly (3) comprises a conveying rod (31) and a push plate (32); a pair of conveying rods (31) are respectively arranged on the base (1) and located on both sides of a plurality of groups of screening wheels (2), and the pair of conveying rods (31) are arranged along the entire length of the material discharge direction of the base (1); the push plate (32) is movably arranged on the pair of conveying rods (31), the push plate (32) is located below the plurality of groups of screening wheels (2), and the bottom surface of the push plate (32) is in sliding contact with the bottom surface of the soil chamber of the base (1).

2. The construction waste screening device according to claim 1 is characterized in that: The unloading assembly (3) further comprises a driving wheel (33) and a transmission mechanism; one end of a pair of transmission rods (31) away from the unloading chute (11) passes through the base (1) and is coaxially fixedly connected with a driving wheel (33), the transmission mechanism is arranged on the base (1), and the pair of driving wheels (33) are connected to the transmission mechanism in a transmission manner.

3. The construction waste screening device according to claim 2 is characterized in that: The transmission mechanism comprises a linkage chain (34), a rotating wheel (35) and a driving motor (36); the driving motor (36) is mounted on the outer wall of the base (1), and the rotating wheel (35) is coaxially fixedly connected to the output shaft of the driving motor (36); the rotating wheel (35) is located between a pair of driving wheels (33), and the linkage chain (34) is transmission-connected between the rotating wheel (35) and the pair of driving wheels (33).

4. The construction waste screening device according to claim 1 or 2, characterized in that: The pair of transmission rods (31) are formed with external threads, and both ends of the push plate (32) are formed with threaded holes matching the transmission rods (31), so that both ends of the push plate (32) can be movably arranged on the pair of transmission rods (31).

5. The construction waste screening device according to claim 3 is characterized in that: A positioning device (4) is provided between the linkage chain (34) and the base (1), and the linkage chain (34) is locked on the outer wall of the base (1) through the positioning device (4).

6. The construction waste screening device according to claim 5 is characterized in that: The positioning device (4) comprises a clamping block (41), a supporting block (42) and a guiding mechanism; the clamping block (41) is fixedly arranged on the outer wall of the base (1), and the top plate of the clamping block (41) with a Z-shaped structure is attached to the bottom surface of the linkage chain (34); the supporting block (42) is liftably arranged on the clamping block (41) through the guiding mechanism, and the top plate of the supporting block (42) with a Z-shaped structure is liftably located above the top surface of the linkage chain (34), so that the top plate of the supporting block (42) can press the linkage chain (34) against the top plate of the clamping block (41).

7. The construction waste screening device according to claim 6 is characterized in that: The guiding mechanism comprises an adjusting rod (44), which is arranged on the bottom plate of the clamping block (41) and the bottom plate of the supporting block (42); the lower part of the adjusting rod (44) is rotatably arranged on the bottom plate of the clamping block (41); a screw hole is formed on the bottom plate of the supporting block (42); and a threaded section matching the screw hole is formed on the upper part of the adjusting rod (44), so that the supporting block (42) is connected to the clamping block (41) through threaded transmission.

8. The construction waste screening device according to claim 6 or 7, characterized in that: The middle vertical plate of the clamping block (41) serves as a guide plate (43), and a vertical guide groove (45) is formed on the guide plate (43); a guide block is provided on the side of the middle vertical plate of the supporting block (42) facing the guide plate (43), and the guide block is slidably embedded in the guide groove (45).

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