CN212732976U - Swinging sand screening machine - Google Patents

Abstract

The utility model relates to a sieve sand machine sways uses in sand grain screening installation's field, and it includes bank of screens, sways the frame and sets up the screen cloth in swaying the frame, swaying the frame and suspending in midair on the bank of screens through swaying the area, be provided with the actuating mechanism who is used for ordering about swaying frame and sways on the bank of screens. This application has the intensity of labour's that reduces the sieve sand effect.

Description

Swinging sand screening machine

Technical Field

The application relates to the field of sand screening equipment, in particular to a swinging sand screening machine.

Background

The sand grains are a building material and can be divided into coarse sand, medium sand and fine sand according to different diameters, and the sand grains have different grain sizes under different use environments, so that the sand grains need to be screened in the use process to obtain the sand grains with the required grain sizes.

At present, the screening sand particles are mostly screened by adopting a manual sand screening mode, namely, the sand particles are carried by a tool such as a shovel and the like manually, then the sand particles are thrown onto a screen, and the sand particles are screened by means of the impact force of the sand particles thrown onto the screen, however, the labor intensity of manual sand screening is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that sieve sand intensity of labour is big, this application provides a rocking sieve sand machine.

The application provides a rocking screen sand machine adopts following technical scheme:

the utility model provides a rocking sand screening machine, includes the bank of screens, sways the frame and sets up the screen cloth in swaying the frame, it suspends in midair on the bank of screens through swaying the area to sway the frame, be provided with the actuating mechanism who is used for ordering about swaying the frame and sways on the bank of screens.

Through adopting above-mentioned technical scheme, when needs sieve the sand grain, the staff transports the sand grain of treating the screening to the screen cloth on, then orders about the reciprocal swing of rocking arm through actuating mechanism to can make the sand grain obtain the screening, can effectively reduce the intensity of labour of screening sand, improve the efficiency of screening sand.

Preferably, actuating mechanism is including setting up the driving motor on the bank of screens, it is provided with the transmission shaft to rotate on the bank of screens, driving motor's output shaft links to each other through first drive unit with the transmission shaft, it is provided with the drive shaft still to rotate on the bank of screens, the drive shaft passes through the second drive unit with the transmission shaft and links to each other, the both ends of drive shaft are provided with the rolling disc, be provided with eccentric seat on the rolling disc, it is provided with the rocking arm to rotate on the eccentric seat, the articulated setting on the rocking arm of one end that eccentric seat was kept away from to the rocking arm.

Through adopting above-mentioned technical scheme, after the sand grain that will wait to sieve transports to the screen cloth, the staff starts driving motor, it rotates to drive the transmission shaft through first drive unit, then drive the drive shaft through second drive unit and rotate, the drive shaft rotates and drives the rolling disc and rotate, the rolling disc rotates the in-process, because eccentric seat eccentric settings is on the rolling disc, thereby drive eccentric seat and rotate along the rolling disc centre of a circle, in order to order about the reciprocal advance and retreat of rocking arm, and then order about the reciprocal swing of rocking arm, make the sand grain on the screen cloth obtain the screening.

Preferably, the first transmission unit includes a motor pulley, an end pulley and a first belt, the motor pulley is disposed on an output shaft of the driving motor, the end pulley is disposed at one end of the transmission shaft, and the first belt is wound between the motor pulley and the end pulley.

Through adopting above-mentioned technical scheme, driving motor's output shaft drives the motor band pulley and rotates, drives the tip band pulley through first belt and rotates, and the tip band pulley rotates and drives the transmission shaft and rotate to realize the transmission between driving motor's output shaft and the transmission shaft.

Preferably, the second transmission unit comprises a transmission belt wheel, a driving belt wheel and a second belt, the transmission belt wheel is arranged on the transmission shaft, the driving belt wheel is arranged on the driving shaft, and the second belt is wound between the transmission belt wheel and the driving belt wheel.

Through adopting above-mentioned technical scheme, the transmission shaft rotates and drives the driving pulley and rotate, drives driving pulley through the second belt and rotates, and driving pulley rotates and drives the drive shaft and rotate to realize the transmission between transmission shaft and the drive shaft.

Preferably, the two ends of the transmission shaft are rotatably arranged on the screen frame through bearing seats, waist-shaped holes are formed in the screen frame, and first bolts penetrating through the waist-shaped holes and used for fixing the bearing seats on the screen frame are arranged on the bearing seats.

Through adopting above-mentioned technical scheme, the staff can be dismantled the transmission shaft from the bank of screens to the convenience is carried out the dismouting to first belt and second belt, and the setting in waist type hole, and the staff of being convenient for adjusts the rate of tension of first belt and second belt, makes first belt and second belt can the steady operation.

Preferably, the lower edge of the swing frame is provided with a lap, the lap extends towards the inner side of the swing frame, the edge of the screen is lapped on the lap, and the edge of the screen and the lap are fixed through screws.

Through adopting above-mentioned technical scheme, fix screen cloth detachable on the scrap (bridge) of rocking frame lower limb for the staff can carry out corresponding change to the screen cloth according to the particle size of the sand grain of required screening, so that can sieve out the sand grain of required particle size.

Preferably, both ends of the swing belt and the swing frame and the screen frame are fixed through second bolts.

Through adopting above-mentioned technical scheme, after the sand screening finishes, the remaining sand grain on the screen cloth need be clear away from on the screen cloth, the staff can pull down the second bolt between rocking belt and rocking frame or the bank of screens of keeping away from actuating mechanism, make rocking belt and rocking frame or bank of screens separation, the one end that actuating mechanism was kept away from to the rocking frame at this moment breaks away from the suspension in rocking belt, under the action of gravity, the downward upset and the state that keeps the slope, thereby the remaining residual sand grain alright automatic from the screen cloth slide down, in order conveniently to clear away from the remaining residual sand grain on the screen cloth.

Preferably, the rocking frame includes fixed support body and activity support body, the activity support body is located the rocking frame and keeps away from one side of actuating mechanism, the both ends that the activity support body is close to fixed support body all are provided with the peg graft pole, the both ends that the fixed support body is close to the activity support body all are provided with the pipe of pegging graft, peg graft pole is pegged graft at the pipe of pegging graft from the below.

Through adopting above-mentioned technical scheme, the peg graft pole at activity support body both ends is pegged graft respectively in the grafting pipe at fixed support body both ends from the below, thereby can live fixed support body support, realize the concatenation of activity support body and fixed support body, when needs clear away the remaining sand grain on the screen cloth, the staff can upwards lift fixed support body, make the peg graft pole break away from in the grafting pipe, the separation from fixed support body is followed to the activity support body this moment, fixed support body loses the support back, under the action of gravity, downwards the upset and keep the state of slope, thereby remaining sand grain alright automatic from the screen cloth slide and obtain the clearance, at this in-process, because remaining sand grain does not receive the blockking of activity support body, thereby be convenient for remaining sand grain to clear away completely.

Preferably, the lower edge and the two side edges of the movable frame body facing one side of the screen are provided with sand blocking strips, and the sand blocking strips are tightly attached to the inner wall and the lapping edges of the fixed frame body.

Through adopting above-mentioned technical scheme, the gap that the sand strip will move between the support body and the fixed support body seals, can block that the sand grain leaks away to reduce the loss of sand grain.

Preferably, the sieve frame is arranged below the swing frame in a rotating mode and provided with a supporting plate, and the swing frame is supported by the supporting plate.

Through adopting above-mentioned technical scheme, after the completion is clear away to the remaining sand grain on the screen cloth when fixed support body upset downwards, the staff need upwards lift fixed support body, make activity support body and mount weight splice together newly, at this in-process, the staff can rotate the below to fixed support body with the backup pad, make the short-lived of fixed support body take and put in the backup pad, thereby the staff need not to lift fixed support body all the time, when needs peg graft the pole in the grafting pipe, it can to lift fixed support body slightly upwards again.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by driving the swing frame to swing in a reciprocating manner, sand grains on the screen can be automatically screened, the labor intensity of sand screening can be effectively reduced, and the sand screening efficiency is improved;

2. the screen is detachably fixed on the lap of the lower edge of the swing frame, so that workers can correspondingly replace the screen according to the grain size of the sand needing to be screened, and the sand with the required grain size can be screened;

3. the structure of concatenation formula between activity support body and the fixed support body for the activity support body can be followed and fixed support body is dismantled, thereby is convenient for the residual sand grain on the screen cloth to be cleared up, and is convenient for the residual sand grain to clear away completely.

Drawings

Fig. 1 is a schematic overall structure diagram of the first embodiment.

Fig. 2 is an enlarged view of a portion a in fig. 1.

FIG. 3 is a schematic structural diagram of an embodiment of a drive mechanism.

Fig. 4 is an enlarged view of a portion B in fig. 3.

Fig. 5 is a schematic view of the overall structure of the second embodiment.

Fig. 6 is an enlarged view of a portion C in fig. 5.

Description of reference numerals: 11. a screen frame; 111. a beam frame; 112. an oblique bracket; 12. a swing frame; 121. a fixed frame body; 1211. inserting a pipe; 122. a movable frame body; 1221. a plug rod; 13. screening a screen; 14. a swing belt; 15. a drive mechanism; 151. a drive motor; 1511. a motor pulley; 152. a drive shaft; 1521. an end pulley; 1522. a drive pulley; 153. a first belt; 154. a drive shaft; 1541. a drive pulley; 155. a second belt; 156. rotating the disc; 157. an eccentric seat; 158. a rocker arm; 16. a bearing seat; 17. a kidney-shaped hole; 18. a first bolt; 19. lapping; 20. a screw; 21. a second bolt; 22. a sand blocking strip; 23. and a support plate.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a rocking sand screening machine.

Example 1

Referring to fig. 1, the swing sand screening machine includes a screen frame 11, a swing frame 12 and a screen 13, the screen frame 11 is rectangular as a whole, beam frames 111 are fixedly arranged on two sides of the screen frame 11 in the width direction, the swing frame 12 is located above the screen frame 11 and extends along the length direction of the screen frame 11, two swing belts 14 are arranged on two sides of the swing frame 12 in the width direction, the two swing belts 14 on each side are symmetrically arranged along the middle of the wide side of the swing frame 12, the swing belt 14 is made of rubber, the swing belt 14 is fixed to the swing frame 12 through a second bolt 21, one end of the swing belt 14, which is far away from the swing frame 12, is also fixed to the beam frames 111 through the second bolt 21, so that the swing frame 12 is suspended between the two beam frames 111 through the four swing belts 14, and a certain distance is formed between the bottom surface of the swing frame 12 and the top surface of.

Referring to fig. 1 and 2, the screen 13 is arranged in the swing frame 12 and used for screening sand, a circle of overlap 19 is fixedly arranged on the lower edge of the swing frame 12, the overlap 19 extends horizontally towards the inner side of the swing frame 12, the peripheral edge of the screen 13 is overlapped on the overlap 19 and is fixed through screws 20 arranged at intervals, so that the screen 13 is fixed in the swing frame 12, the screen 13 is detachably fixed, and a worker can correspondingly replace the screen 13 at any time according to the grain size of the sand needing to be screened so as to screen the sand with the required grain size.

Referring to fig. 1, one end of the sieve frame 11 in the length direction extends out of the swing frame 12, and a driving mechanism 15 is disposed at the end of the sieve frame 11 extending out of the swing frame 12 to drive the swing frame 12 to automatically swing back and forth, so that sand placed on the screen 13 is screened.

Referring to fig. 1 and 3, the driving mechanism 15 includes a driving motor 151 fixed on the sieve frame 11, two inclined brackets 112 that are inclined and parallel to each other are fixedly connected between one end of the sieve frame 11 extending out of the swing frame 12 and the beam frame 111 close to the end, the two inclined brackets 112 are provided with a horizontal transmission shaft 152 therebetween, the transmission shaft 152 extends along the width direction of the sieve frame 11, bearing blocks 16 are installed at both ends of the transmission shaft 152 in an interference fit manner, the two bearing blocks 16 are respectively fixed on the two inclined brackets 112 through first bolts 18, so as to fix the transmission shaft 152, through waist-shaped holes 17 are respectively formed in the two inclined brackets 112, the waist-shaped holes 17 extend along the length direction of the inclined brackets 112, and the first bolts 18 penetrate through the waist-shaped holes 17 to fix the bearing blocks 16.

Referring to fig. 1 and 3, the output shaft of the driving motor 151 and the transmission shaft 152 are driven by a first transmission unit, the first transmission unit includes a motor pulley 1511, an end pulley 1521 and a first belt 153, the motor pulley 1511 is fixedly disposed on the output shaft of the driving motor 151, the end pulley 1521 is fixedly disposed at one end of the transmission shaft 152, and the first belt 153 is wound between the end pulley 1521 and the motor pulley 1511 in a tensioned state.

Referring to fig. 3 and 4, a driving shaft 154 is arranged below the transmission shaft 152 on the sieve frame 11, the driving shaft 154 and the transmission shaft 152 are arranged in parallel, bearing seats 16 are also installed at two ends of the driving shaft 154 in an interference fit manner, the two bearing seats 16 are both fixed on the sieve frame 11 through bolts, so that the driving shaft 154 is fixed, the driving shaft 154 and the transmission shaft 152 are driven through a second driving unit, the second driving unit comprises a driving pulley 1522, a driving pulley 1541 and a second belt 155, the driving pulley 1522 is fixedly arranged in the middle of the transmission shaft 152, the driving pulley 1541 is fixedly arranged in the middle of the driving shaft 154, and the second belt 155 is wound between the driving pulley 1541 and the driving pulley 1522 in a tensioned state. Because transmission shaft 152 and drive shaft 154 are detachable fixed mode to make things convenient for the dismouting of first belt 153 with second belt 155, transmission shaft 152 can carry out the adjustment of position along the extending direction in waist type hole 17 simultaneously, thereby the staff of being convenient for adjusts the rate of tension of first belt 153 and second belt 155, makes first belt 153 and second belt 155 can the steady operation.

Referring to fig. 4, two ends of the driving shaft 154 are both fixedly provided with rotating discs 156, the two rotating discs 156 and the driving shaft 154 are coaxially arranged, an eccentric seat 157 is fixedly arranged on the end surface of the two rotating discs 156 departing from the driving shaft 154, the eccentric seat 157 is eccentrically arranged on the end surface of the rotating discs 156, a rocker arm 158 is sleeved on the eccentric seat 157, the rocker arm 158 can rotate along the eccentric seat 157, one end of the rocker arm 158 far away from the eccentric seat 157 is hinged to the swing frame 12, and the two rocker arms 158 keep synchronous.

Referring to fig. 3 and 4, when sand needs to be screened, a worker firstly transports the sand to be screened onto the screen 13, then starts the driving motor 151, drives the motor pulley 1511 to rotate through the output shaft of the driving motor 151, drives the end pulley 1521 to rotate through the first belt 153, drives the transmission shaft 152 to rotate through the rotation of the end pulley 1521, drives the transmission shaft 152 to rotate through the rotation of the transmission shaft 152, drives the driving pulley 1522 to rotate, then drives the driving pulley 1541 to rotate through the second belt 155, drives the driving shaft 154 to rotate, drives the two rotating discs 156 to rotate through the rotation of the driving shaft 154, drives the two eccentric seats 157 to synchronously rotate along the centers of the respective rotating discs 156 during the rotation of the two rotating discs 156, thereby driving the two rocker arms 158 to synchronously reciprocate and advance and retreat, further driving the swing frame 12 to reciprocate, so that the sand on the screen 13 is screened, and the automatic sand screening mode can effectively reduce the labor intensity of, the efficiency of screening sand is improved.

Referring to fig. 3, after the sand screening is completed, the remaining sand on the screen 13 needs to be removed for the later screen 13 to be reused, the worker can detach the second bolts 21 between the two swing belts 14 far away from the driving mechanism 15 and the swing frame 12 or the beam frame 111, so that the two swing belts 14 are separated from the swing frame 12 or the beam frame 111, and at this time, one end of the swing frame 12 far away from the driving mechanism 15 is separated from the suspension of the swing belt 14, and is turned downwards under the action of gravity to maintain the inclined state, so that the remaining sand can automatically slide off the screen 13, and the remaining sand on the screen 13 can be conveniently removed.

The implementation principle of the embodiment 1 is as follows: when sand grains need to be screened, a worker firstly transports the sand grains to be screened onto the screen 13, then the driving motor 151 is started, the output shaft of the driving motor 151 drives the motor belt pulley 1511 to rotate, the first belt 153 drives the end belt pulley 1521 to rotate, the end belt pulley 1521 rotates to drive the transmission shaft 152 to rotate, the transmission shaft 152 rotates to drive the transmission belt pulley 1522 to rotate, the second belt 155 drives the driving belt pulley 1541 to rotate, the driving belt pulley 1541 rotates to drive the driving shaft 154 to rotate, the driving shaft 154 rotates to drive the two rotating discs 156 to rotate, and the two rotating discs 156 drive the two eccentric seats 157 to synchronously rotate along the centers of the respective rotating discs 156 in the rotating process, so that the two rocker arms 158 are driven to synchronously reciprocate, the swinging frame 12 is driven to reciprocate, and the sand grains on the screen 13 are screened.

Example 2

Referring to fig. 5 and 6, the embodiment is different from embodiment 1 in that the swing frame 12 includes a fixed frame body 121 and a movable frame body 122, the movable frame body 122 is one side of the swing frame 12 away from the driving mechanism 15, the fixed frame body 121 is the other three sides of the swing frame 12 close to the driving mechanism 15, two ends of the movable frame body 122 close to the fixed frame body 121 are both provided with an insertion rod 1221, a lower end of the insertion rod 1221 is fixedly connected with the movable frame body 122, an upper end of the insertion rod 1221 extends upwards along a width direction of the movable frame body 122 and has a gap with the movable frame body 122, two ends of the fixed frame body 121 close to the movable frame body 122 are both fixedly provided with insertion tubes 1211, the insertion rods 1221 are arranged in cooperation with the insertion tubes 1211, when the movable frame body 122 and the fixed frame body 121 are installed, the insertion rods 1221 at two ends of the movable frame body 122 are respectively inserted into the, thereby supporting the fixed frame body 121 and realizing the splicing installation of the movable frame body 122 and the fixed frame body 121.

Referring to fig. 5 and 6, when the residual sand on the screen 13 needs to be removed, a worker may lift the fixed frame 121 upwards to disengage the insertion rod 1221 from the insertion pipe 1211, at this time, the movable frame 122 is separated from the fixed frame 121, and after the fixed frame 121 loses support, the fixed frame 121 is turned downwards under the action of gravity to maintain an inclined state, so that the residual sand may automatically slide off the screen 13 to be removed.

Referring to fig. 6, after the movable frame 122 is spliced with the fixed frame 121, there may be a gap between the movable frame 122 and the fixed frame 121 at the splicing position, sand is easily leaked out from the gap, in order to improve the sealing performance of the splicing position of the movable frame 122 and the fixed frame 121, sand blocking strips 22 are disposed on the lower edge and the two side edges of the movable frame 122 facing one side of the screen 13, the sand blocking strips 22 are made of rubber, and are fixed on the movable frame 122 through screws, after the movable frame 122 is spliced with the fixed frame 121, the sand blocking strips 22 are tightly attached to the inner wall of the fixed frame 121 and the lap 19, so that the gap between the movable frame 122 and the fixed frame 121 is sealed, sand leakage can be prevented, and sand loss is reduced.

Referring to fig. 5, the support plates 23 are symmetrically and rotatably disposed on two sides of the sieve frame 11 in the length direction of the swing frame 12, the support plates 23 are disposed below the swing frame 12, after the fixed frame body 121 is turned downward to remove residual sand on the screen 13, the worker needs to lift the fixed frame body 121 upward, so that the movable frame body 122 and the fixed frame body 121 are spliced together again, in the process, the worker can rotate the two support plates 23 to the lower side of the fixed frame body 121, so that the fixed frame body 121 is temporarily placed on the two support plates 23, the worker does not need to lift the fixed frame body 121 all the time, when the plugging rod 1221 is plugged into the plugging pipe 1211, the fixed frame body 121 is lifted up slightly, and a power saving effect is achieved.

The implementation principle of the embodiment 2 is as follows: when the movable frame body 122 and the fixed frame body 121 are installed, the insertion rods 1221 at the two ends of the movable frame body 122 are respectively inserted into the insertion pipes 1211 at the two ends of the fixed frame body 121 from below, so that the fixed frame body 121 can be supported, and the movable frame body 122 and the fixed frame body 121 can be installed in a splicing manner; when the residual sand on the screen 13 needs to be removed, the worker can lift the fixed frame 121 upwards to separate the insertion rod 1221 from the insertion pipe 1211, and at this time, the movable frame 122 is separated from the fixed frame 121, and after the fixed frame 121 loses support, the fixed frame 121 is turned downwards under the action of gravity to keep an inclined state, so that the residual sand can automatically slide off the screen 13 to be cleaned.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a sieve sand machine sways which characterized in that: including bank of screens (11), rocking frame (12) and screen cloth (13) of setting in rocking frame (12), rocking frame (12) suspend in midair on bank of screens (11) through rocking area (14), be provided with on bank of screens (11) and be used for driving about the actuating mechanism (15) that rocking frame (12) rocked.

2. The rocking sand screening machine of claim 1, wherein: the driving mechanism (15) comprises a driving motor (151) arranged on a sieve frame (11), a transmission shaft (152) is arranged on the sieve frame (11) in a rotating mode, an output shaft of the driving motor (151) is connected with the transmission shaft (152) through a first transmission unit, a driving shaft (154) is further arranged on the sieve frame (11) in a rotating mode, the driving shaft (154) is connected with the transmission shaft (152) through a second transmission unit, rotating discs (156) are arranged at two ends of the driving shaft (154), an eccentric seat (157) is arranged on each rotating disc (156), a rocker arm (158) is arranged on each eccentric seat (157) in a rotating mode, and one end, far away from the eccentric seat (157), of each rocker arm (158) is hinged to a swing frame (12).

3. The rocking sand screening machine of claim 2, wherein: first drive unit includes motor pulley (1511), tip band pulley (1521) and first belt (153), motor pulley (1511) sets up on driving motor's (151) output shaft, tip band pulley (1521) sets up in the one end of transmission shaft (152), first belt (153) are around establishing between motor pulley (1511) and tip band pulley (1521).

4. The rocking sand screening machine of claim 2, wherein: the second transmission unit comprises a transmission belt wheel (1522), a driving belt wheel (1541) and a second belt (155), the transmission belt wheel (1522) is arranged on the transmission shaft (152), the driving belt wheel (1541) is arranged on the driving shaft (154), and the second belt (155) is wound between the transmission belt wheel (1522) and the driving belt wheel (1541).

5. The rocking sand screening machine of claim 2, wherein: the two ends of the transmission shaft (152) are rotatably arranged on the sieve frame (11) through the bearing seats (16), waist-shaped holes (17) are formed in the sieve frame (11), and first bolts (18) penetrating through the waist-shaped holes (17) and used for fixing the bearing seats (16) on the sieve frame (11) are arranged on the bearing seats (16).

6. The rocking sand screening machine of claim 1, wherein: the lower edge of the swing frame (12) is provided with a lap (19), the lap (19) extends towards the inner side of the swing frame (12), the edge of the screen (13) is overlapped on the lap (19), and the edge of the screen (13) is fixed with the lap (19) through a screw (20).

7. The rocking sand screening machine of claim 1, wherein: and the two ends of the swing belt (14) and the swing frame (12) and the screen frame (11) are fixed through second bolts (21).

8. The rocking sand screening machine of claim 1, wherein: the swing frame (12) comprises a fixed frame body (121) and a movable frame body (122), the movable frame body (122) is located on one side, away from the driving mechanism (15), of the swing frame (12), insertion rods (1221) are arranged at two ends, close to the fixed frame body (121), of the movable frame body (122), insertion tubes (1211) are arranged at two ends, close to the movable frame body (122), of the fixed frame body (121), and the insertion rods (1221) are inserted into the insertion tubes (1211) from the lower side.

9. The rocking sand screen of claim 8, wherein: the sand blocking strip (22) is arranged on the lower edge and the two side edges of the movable frame body (122) facing one side of the screen (13), and the sand blocking strip (22) is tightly attached to the inner wall of the fixed frame body (121) and the lap (19).

10. The rocking sand screening machine of claim 1, wherein: the screen frame (11) is positioned below the swing frame (12) and is rotatably provided with a supporting plate (23), and the swing frame (12) is supported by the supporting plate (23).

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