A multi-directional sand collector

Abstract

The present application relates to a kind of multi-direction sand collector, it is related to sand collector technical field, including: support column, the inside of support column is hollow structure, the top of support column is provided with second filter screen;Multiple collection components, collection component is arranged from top to bottom along the support column, collection component includes support disc fixed on the support column and multiple collectors installed on support disc, and multiple storage barrels are installed below support disc, and collector is arranged around the side of support column.This application when lifting sleeve moves down to the position of inserting column, inserting column is inserted into the first through-hole in the bottom of lifting sleeve, the sealing cover is lifted, the internal water is discharged, and lifting sleeve continues to move down, and the compression inserting column moves down, and the first bottom plate and second bottom plate are simultaneously moved down by inserting column, the first bottom plate is separated from the bottom of storage barrel, at this time, sand particle in the inside of storage barrel can be directly discharged, prevent storage barrel and collector from rusting and corroding, affect monitoring.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sand collectors, in particular, to a multi-directional sand collector. BACKGROUND

[0002] When conducting geological exploration, ecological monitoring and climate change research in desert areas, the collection and analysis of sand particles is a crucial link. The desert environment, with its extreme natural conditions such as dryness, strong winds, and abundant sand sources, poses many challenges to sand collection. Traditional sand collection methods, such as manual excavation and wind-blown sand sampling, are not only labor-intensive and inefficient, but also difficult to achieve comprehensive and uniform sampling in vast desert areas, resulting in limitations in research results.

[0003] The existing sand collection devices also face many shortcomings in desert areas. On the one hand, many sand collection devices are complex in design and difficult to adapt to the harsh desert environment, such as high temperature and sandstorms, which can easily malfunction or be damaged. On the other hand, although some devices can automatically collect sand particles, they often lack effective filtering and replacement mechanisms, and the sand storage equipment can be corroded after experiencing rain, affecting the accuracy of subsequent analysis results. In addition, the wind direction in desert areas is variable, and traditional sand collection devices often cannot adjust the collection direction flexibly, resulting in low collection efficiency and difficulty in covering all possible sand sources.

[0004] In Chinese Patent Application 201910374062.1, a field wind and sand flow observation method is disclosed, which involves a gradient multi-directional sand collector. The gradient multi-directional sand collector is composed of a low barrel, a main support rod, a 16-direction collector, two 8-direction collectors, a collection bag, and a fixing device. The two 8-direction collectors are linked to the main support rod with fixed bolts, so that the height of the two 8-direction collectors can be freely adjusted according to needs, thereby detecting wind erosion at various heights and improving the flexibility of the sand collector. The sand collector can collect wind-eroded materials of different wind directions and different height ranges. The sand collector has a simple structure, is easy to install and maintain, can perform long-term wind erosion observation, greatly reduces the labor intensity of field wind erosion observation, and can accurately and efficiently observe the wind erosion amount at different heights in the wind erosion area.

[0005] Therefore, a multi-directional sand collector is designed to solve the above problems. SUMMARY

[0006] The purpose of the present application is to provide a multi-directional sand collector.

[0007] To solve the above technical problems, the present application provides a multi-directional sand collector, comprising:

[0008] a support column, the inside of the support column is a hollow structure, and the top of the support column is provided with a second filter screen;

[0009] a plurality of collecting assemblies arranged along the support column from top to bottom, the collecting assembly comprising a support disc fixed on the support column and a plurality of collectors mounted on the support disc, and a plurality of storage barrels mounted below the support disc, the collectors being arranged around the side of the support column, the collectors being in communication with the storage barrels, one side of the collector being provided with a sand inlet;

[0010] a sand discharging part comprising a lifting sleeve mounted inside the collector and a sand discharging assembly mounted below the support disc, and a reset assembly mounted in the support column, the sand discharging assembly being used to control the opening and closing of the bottom of the storage barrel;

[0011] wherein when the lifting sleeve moves downward along the support column, the sand in the storage barrel can be discharged by compressing the sand discharging assembly.

[0012] Further, the bottom of the collector is provided with a sand discharging port, the sand discharging port being in communication with the storage barrel, and the collector being a three-prism shape.

[0013] Further, the bottom of the support disc is provided with a plurality of connecting pipes, the storage barrel being threadedly connected at the bottom of the connecting pipe, and the two ends of the storage barrel being provided with openings.

[0014] Further, the top of the collector is fixed with a fixing ring, the inner side wall of the fixing ring being fixed with a first magnetic block.

[0015] Further, the top of the lifting sleeve is provided with a second magnetic block, the inside of the second magnetic block being fixed with a second filter screen, the second filter screen being a semicircular arc shape, wherein

[0016] The second magnetic block is attracted to the first magnetic block in the initial position.

[0017] Further, the inner bottom of the lifting sleeve is provided with a plurality of first through holes, guide rods being fixed on the inner bottom wall of the lifting sleeve and located on both sides of the first through holes, a top plate being fixed on the top of the guide rod, a sealing cover being mounted on the top of the first through hole, guide holes being provided on both sides of the sealing cover, the guide rod being inserted into the guide hole, and the sealing cover being movable up and down along the guide rod.

[0018] Further, a plurality of positioning blocks are provided on the outer circumferential side of the lifting sleeve, second through holes being formed in the positioning blocks, a sliding groove being formed in the position close to the support column of the collector, a sliding rod being mounted in the sliding groove, a first spring being sleeved on the sliding rod, the sliding rod being inserted into the second through hole, and the positioning block being slidable up and down along the sliding rod.

[0019] Further, the sand discharging assembly comprises a first bottom plate located at the bottom of the storage barrel, a second bottom plate installed on the first bottom plate, and a plug post fixed on the second bottom plate, the first bottom plate is connected with the second bottom plate through a fixing rod, the second bottom plate is attached to the outer sidewall of the storage barrel, a plurality of arc-shaped collars are arranged on the outer sidewall of the storage barrel, the top part of the plug post penetrates through the support disc, and the plug post is sleeved with a second spring below the support disc, wherein

[0020] When the lifting sleeve moves downward along the support column, the plug post lifts the sealing cover, and the top plate compresses the plug post, so that the first bottom plate moves downward to open the storage barrel.

[0021] Further, a plurality of screw holes are arranged on the first bottom plate, a plurality of barrel covers are threadedly connected in the screw holes, and rotating handles are arranged at the bottom of the barrel covers.

[0022] Further, the reset assembly comprises a connecting rod installed in the support column and a piston plate fixed on the top of the connecting rod, a third filter screen is fixed in the support column, the bottom of the connecting rod penetrates through the third filter screen, a plurality of strip grooves are arranged on the support column, the third filter screen is located at the bottom of the strip grooves, a third spring is sleeved on the connecting rod, a cross rod is fixed on the connecting rod, the cross rod is located in the strip grooves, and the cross rod extends to the outside of the support column.

[0023] The beneficial effects of the present application are that when the lifting sleeve moves downward to the position of the plug post, the plug post is inserted into the first through hole at the bottom of the lifting sleeve, the sealing cover is lifted, the water in the interior is discharged, the lifting sleeve continues to move downward, the plug post is compressed to move downward, the plug post drives the first bottom plate and the second bottom plate to move downward at the same time, the first bottom plate is separated from the bottom of the storage barrel, at this time, the sand particles in the interior of the storage barrel can be directly discharged, after the water in the lifting sleeve is discharged, the second spring is reset, the first bottom plate seals the storage barrel again, and when the first bottom plate passes through the arc-shaped collars to generate friction, the sand particles on the inner wall of the storage barrel can be better shaken out. BRIEF DESCRIPTION OF DRAWINGS

[0024] The present application will be further described below in combination with the drawings and examples.

[0025] Figure 1 is a perspective view of a multi-directional sand collecting device of the present application;

[0026] Figure 2 is a front view of a sectional structure of a multi-directional sand collecting device of the present application;

[0027] Figure 3 is a sectional structure of an internal part of a collecting assembly of the present application;

[0028] Figure 4 This is a perspective view of the lifting sleeve of the present invention;

[0029] Figure 5 This is a front cross-sectional view of the collection component of the present invention;

[0030] Figure 6 This is the invention Figure 3 A magnified view of the structure at point A in the middle;

[0031] Figure 7 This is the invention Figure 3 A magnified schematic diagram of the structure at point B in the middle;

[0032] Figure 8 This is the invention Figure 3 A magnified schematic diagram of the structure at point C.

[0033] In the picture:

[0034] 1. Support column; 11. Groove; 12. First filter screen;

[0035] 2. Collection component; 21. Support plate; 22. Collector; 23. Storage tank; 24. Sand inlet; 25. Sand outlet; 26. Connecting pipe; 27. Fixing ring; 28. First magnetic block; 29. ​​Arc-shaped collar;

[0036] 3. Sand discharge section; 31. Lifting sleeve; 311. Second magnetic block; 312. Second filter screen; 313. First through hole; 314. Guide rod; 315. Top plate; 316. Sealing cover; 317. Guide hole; 32. Sand discharge assembly; 321. First bottom plate; 322. Second bottom plate; 323. Insert post; 324. Second spring; 325. Screw hole; 326. Bucket lid; 327. Rotating handle; 328. Fixing rod; 33. Reset assembly; 331. Connecting rod; 332. Piston plate; 333. Third filter screen; 334. Third spring; 335. Crossbar; 34. Positioning block; 35. Second through hole; 36. Slide groove; 37. Slide rod; 38. First spring. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0038] Example 1: As Figures 1-8 As shown, a multi-directional sand collector of the present invention includes: a support column 1, the support column 1 having a hollow structure inside, and a first filter screen 12 provided on the top of the support column 1; the first filter screen 12 is configured to have mesh openings that allow only rainwater to pass through, as required.

[0039] A plurality of collecting assemblies 2 are arranged along the support column 1 from top to bottom, the collecting assembly 2 comprises a support disc 21 fixed on the support column 1, a plurality of collectors 22 mounted on the support disc 21, and a plurality of storage barrels 23 mounted below the support disc 21, the collectors 22 are arranged around the side of the support column 1, the collectors 22 are in communication with the storage barrels 23, one side of the collector 22 is provided with a sand inlet 24, the sand inlet 24 is located on one side of the collector 22, and the inside of the collector is hollow.

[0040] The support disc 21 is cylindrical, the top can be provided with an arc surface to prevent sand particles from accumulating on the top, when collecting sand particles, more wind sand is at the bottom, and the collecting assembly 2 at the bottom is larger than the two collecting assemblies 2 above it, so that more sand particles can be collected, the wind sand enters the inside of the collector 22 through the sand inlet 24 of the collector 22, and falls into the storage barrel 23 from the bottom of the collector 22, and the storage barrel 23 is detachable, so that sand can be conveniently replaced or taken out.

[0041] A sand discharging part 3 comprises a lifting sleeve 31 mounted in the inside of the collector 22, a sand discharging assembly 32 mounted below the support disc 21, and a reset assembly 33 mounted in the support column 1, the sand discharging assembly 32 is used for controlling the opening and closing of the bottom opening of the storage barrel 23; wherein when the lifting sleeve 31 moves downward along the support column 1, the sand discharging assembly 32 can be compressed to discharge sand particles in the storage barrel 23.

[0042] When sand particles in the storage barrel 23 are not taken out for a long time, the sand particles will accumulate in the inside of the collector 22, when it rains, the wet sand particles are easy to corrode the collector 22 and the storage barrel 23, and the collector 22 and the storage barrel 23 need to be replaced regularly, therefore, when it rains, more rainwater accumulates in the lifting sleeve 31, and after the rainwater is discharged, the lifting sleeve 31 will be lowered due to gravity, the sand discharging assembly 32 at the bottom is pressed downward to open the bottom of the storage barrel 23, discharge the sand particles, and after the rainwater in the lifting sleeve 31 is discharged, the lifting sleeve 31 is reset, the storage barrel 23 is closed again, sand collection is performed, and the reset assembly 33 is used to improve the reset effect of the lifting sleeve 31.

[0043] The bottom of the collector 22 is provided with a sand discharging opening 25, the sand discharging opening 25 is in communication with the storage barrel 23, the collector 22 is a three-prism shape, the inner bottom wall of the collector 22 is a circular arc shape, and the sand particles entering the inside of the collector 22 can better enter the storage barrel 23 through the sand discharging opening 25.

[0044] The bottom of the support disc 21 is provided with a plurality of connecting pipes 26, the storage barrel 23 is threadedly connected to the bottom of the connecting pipe 26, and the two ends of the storage barrel 23 are open.

[0045] The storage bucket 23 is connected with the connecting pipe 26 through the top thread, and when it needs to be disassembled, the storage bucket 23 is separated from the connecting pipe 26 by directly rotating the storage bucket 23. The bottom opening of the storage bucket 23 can be used to drain the sand from the bottom of the storage bucket 23 after the rain.

[0046] The top of the collector 22 is fixed with a fixed ring 27, the inner side wall of the fixed ring 27 is fixed with a first magnetic block 28, the top of the lifting sleeve 31 is provided with a second magnetic block 311, the inside of the second magnetic block 311 is fixed with a second filter screen 312, the second filter screen 312 is a semicircular arc, wherein the initial position of the second magnetic block 311 is adsorbed on the first magnetic block 28, the outer circumferential side of the lifting sleeve 31 is provided with a plurality of positioning blocks 34, the positioning blocks 34 are provided with second through holes 35, the position close to the support column 1 of the collector 22 is provided with a sliding groove 36, the inside of the sliding groove 36 is installed with a sliding rod 37, the sliding rod 37 is sleeved with a first spring 38, the sliding rod 37 is inserted into the second through hole 35, and the positioning block 34 can slide up and down along the sliding rod 37.

[0047] A plurality of collectors 22 can be fixedly connected at the top through the fixed ring 27 to prevent them from shaking due to wind and sand. The storage sleeve is in the initial position and is fixed below the fixed ring 27 by the mutual attraction of the second magnetic block 311 at the top and the first magnetic block 28. The second filter screen 312 at the top of the lifting sleeve 31 can be set to allow only rainwater to pass through the mesh according to the demand. After a lot of rainwater is stored in the lifting sleeve 31 during rainy weather, the first magnetic block 28 is separated from the second magnetic block 311 due to the weight, and at the same time, the positioning block 34 slides downward along the sliding rod 37 to compress the first spring 38.

[0048] The inner bottom of the lifting sleeve 31 is provided with a plurality of first through holes 313, the inner bottom wall of the lifting sleeve 31 and located on both sides of the first through holes 313 is fixed with a guide rod 314, the top of the guide rod 314 is fixed with a top plate 315, the top of the first through hole 313 is installed with a sealing cover 316, the both sides of the sealing cover 316 are provided with guide holes 317, the guide rod 314 is inserted into the guide hole 317, and the sealing cover 316 can move up and down along the guide rod 314. The guide rod 314 lifts the sealing cover 316 upward, at this time, the water in the lifting sleeve 31 flows downward along the guide rod 314 through the first through hole 313, and falls above the support disc 21, and then is drained to the outside of the support disc 21 through the gaps between the multiple collectors 22 arranged in a ring.

[0049] The first through hole 313 is used for draining the rainwater inside the lifting sleeve 31. In the initial position, the sealing cover 316 is located on the first through hole 313 to close it. When in the open state, the sealing cover 316 moves upward along the guide hole 317, and moves to the bottom of the top plate 315 at most. At this time, the internal rainwater can be drained through the first through hole 313.

[0050] The sand draining assembly 32 includes a first bottom plate 321 located at the bottom of the storage barrel 23, a second bottom plate 322 installed on the first bottom plate 321, and a plug column 323 fixed on the second bottom plate 322. The first bottom plate 321 and the second bottom plate 322 are connected through a fixed rod 328. The second bottom plate 322 is attached to the outer sidewall of the storage barrel 23. The outer sidewall of the storage barrel 23 is provided with a plurality of arc-shaped collars 29. The top portion of the plug column 323 penetrates through the support disc 21. The plug column 323 is sleeved with a second spring 324 below the support disc 21. When the lifting sleeve 31 moves downward along the support column 1, the plug column 323 lifts the sealing cover 316, and the top plate 315 compresses the plug column 323, so that the first bottom plate 321 moves downward to open the storage barrel 23.

[0051] The top of the first bottom plate 321 and the second bottom plate 322 can be provided with arc surfaces to prevent sand accumulation. When the lifting sleeve 31 moves downward to the position of the plug column 323, the plug column 323 is inserted into the first through hole 313 at the bottom of the lifting sleeve 31, lifts the sealing cover 316, and drains the internal water. The lifting sleeve 31 continues to move downward, compresses the plug column 323 to move downward, and drives the first bottom plate 321 and the second bottom plate 322 to move downward at the same time. The first bottom plate 321 is separated from the bottom of the storage barrel 23. At this time, the sand inside the storage barrel 23 can be directly drained. After the water in the lifting sleeve 31 is drained, the second spring 324 is reset, the first bottom plate 321 re-closes the storage barrel 23, and when the first bottom plate 321 passes through the arc-shaped collar 29 during the descent, it produces friction to better shake the sand on the inner wall of the storage barrel 23.

[0052] A plurality of screw holes 325 are formed in the first bottom plate 321. A plurality of barrel covers 326 are threadedly connected in the screw holes 325. The bottom of the barrel cover 326 is provided with a rotating handle 327. The inner wall of the storage barrel 23 is provided with threads.

[0053] The barrel cover 326 is located at the bottom of the storage barrel 23. When collecting sand, the bottom of the storage barrel 23 is closed. When the barrel needs to be disassembled after sand collection is completed, the rotating handle 327 can be rotated to threadedly connect the barrel cover 326 with the inner wall of the storage barrel 23, and the barrel cover 326 is separated from the first bottom plate 321, so that the barrel cover 326 is not threadedly connected with the barrel cover 326. The barrel cover 326 is threadedly connected at the bottom of the storage barrel 23 to close the bottom of the storage barrel 23.

[0054] The reset assembly 33 comprises a connecting rod 331 mounted inside the support column 1 and a piston plate 332 fixed on the top of the connecting rod 331, the inside of the support column 1 is fixed with a third filter screen 333 which can be provided with a pore size only allowing rainwater to pass through, the bottom of the connecting rod 331 penetrates through the third filter screen 333, a plurality of strip grooves 11 are formed on the support column 1, the third filter screen 333 is located at the bottom of the strip grooves 11, a third spring 334 is sleeved on the connecting rod 331, a crossbar 335 is fixed on the connecting rod 331, and the crossbar 335 is located in the strip grooves 11 and extends to the outside of the support column 1.

[0055] After long-term use, the reset capability of the lifting sleeve 31 can be improved by the reset assembly 33, when the lifting sleeve 31 is lowered, the bottom of the lifting sleeve 31 compresses the crossbar 335, at the same time, the bottom of the crossbar 335 penetrates through the third filter screen 333 and compresses the third spring 334 to move to the bottom, when the piston plate 332 moves to the strip grooves 11, the liquid in the support column 1 is quickly discharged from the strip grooves 11, at this time, the spring reset drags the lifting sleeve 31 to move upward by a certain distance through the crossbar 335, so that the reset force of the lifting sleeve 31 is improved.

[0056] In the second embodiment, the first filter screen 12, the second filter screen 312 and the third filter screen 333 are provided with mesh holes through which smaller particles can pass, when it is necessary to collect the sand and dust of the days near the collection day, the sand particles in the storage barrel 23 need to be discharged at regular time, the sand and dust passes through the second filter screen 312 and enters the storage barrel 23, the storage barrel 23 is lowered by gravity, the insertion column 323 is inserted into the first through hole 313 at the bottom of the lifting sleeve 31, the sealing cover 316 is lifted to make the internal sand particles be discharged, and the lifting sleeve 31 continues to move downward to compress the insertion column 323 to move downward, the insertion column 323 drives the first bottom plate 321 and the second bottom plate 322 to move downward at the same time, the first bottom plate 321 is separated from the bottom of the storage barrel 23, at this time, the sand particles in the storage barrel 23 can be directly discharged, after the sand particles in the lifting sleeve 31 are discharged, the second spring 324 is reset to make the sand particles in the storage barrel 23 be quantitatively replaced, so that the sand and dust of the days near the collection day can be collected.

[0057] Based on the above ideal embodiments according to the present application, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and must be determined according to the scope of claims.

Claims

1. A multi-directional sand collection device, characterized in that, include: Support column (1), the interior of the support column (1) is a hollow structure, and a second filter screen (312) is provided on the top of the support column (1). Multiple collection components (2) are arranged from top to bottom along the support column (1). Each collection component (2) includes a support plate (21) fixed on the support column (1) and multiple collectors (22) installed on the support plate (21), as well as multiple storage tanks (23) installed below the support plate (21). The collectors (22) are arranged around the support column (1) and are connected to the storage tanks (23). A sand inlet (24) is provided on one side of each collector (22). The sand discharge section (3) includes a lifting sleeve (31) installed inside the collector (22) and a sand discharge assembly (32) installed below the support plate (21), as well as a reset assembly (33) installed inside the support column (1). The sand discharge assembly (32) is used to control the opening and closing of the bottom opening of the storage tank (23). When the lifting sleeve (31) moves downward along the support column (1), it can compress the sand discharge assembly (32) to discharge the sand particles in the storage tank (23); The sand discharge assembly (32) includes a first base plate (321) located at the bottom of the storage tank (23) and a second base plate (322) mounted on the first base plate (321), and a post (323) fixed on the second base plate (322). The first base plate (321) and the second base plate (322) are connected by a fixing rod (328). The second base plate (322) is attached to the outer wall of the storage tank (23). The outer wall of the storage tank (23) is provided with a plurality of arc-shaped collars (29). The top part of the post (323) passes through the support plate (21). A second spring (324) is sleeved on the post (323) located below the support plate (21).

2. The multi-directional sand collection device as described in claim 1, characterized in that, The collector (22) is provided with a sand discharge port (25) at the bottom, which is connected to the storage tank (23). The collector (22) is a triangular prism.

3. A multi-directional sand collection device as described in claim 2, characterized in that, The bottom of the support plate (21) is provided with several connecting pipes (26), and the storage bucket (23) is connected to the bottom of the connecting pipes (26) by threads. The storage bucket (23) has openings at both ends.

4. A multi-directional sand collection device as described in claim 3, characterized in that, The collector (22) is fixed with a fixing ring (27) at the top, and a first magnetic block (28) is fixed to the inner side wall of the fixing ring (27).

5. A multi-directional sand collection device as described in claim 4, characterized in that, The top of the lifting sleeve (31) is provided with a second magnetic block (311), and a second filter screen (312) is fixed inside the second magnetic block (311). The second filter screen (312) is semi-circular. In the initial position, the second magnetic block (311) is attached to the first magnetic block (28).

6. A multi-directional sand collection device as described in claim 5, characterized in that, The inner bottom of the lifting sleeve (31) is provided with a plurality of first through holes (313). Guide rods (314) are fixed on the inner bottom wall of the lifting sleeve (31) and on both sides of the first through holes (313). A top plate (315) is fixed on the top of the guide rods (314). A sealing cover (316) is installed on the top of the first through holes (313). Guide holes (317) are provided on both sides of the sealing cover (316). The guide rods (314) are inserted into the guide holes (317). The sealing cover (316) can move up and down along the guide rods (314).

7. A multi-directional sand collection device as described in claim 6, characterized in that, The outer periphery of the lifting sleeve (31) is provided with a plurality of positioning blocks (34), and the positioning blocks (34) are provided with a second through hole (35). The collector (22) is provided with a sliding groove (36) near the support column (1). A sliding rod (37) is installed inside the sliding groove (36). A first spring (38) is sleeved on the sliding rod (37). The sliding rod (37) is inserted into the second through hole (35), and the positioning block (34) can slide up and down along the sliding rod (37).

8. A multi-directional sand collection device as described in claim 7, characterized in that, The first base plate (321) has several screw holes (325), and several bucket lids (326) are connected to the screw holes (325) by internal threads. The bottom of the bucket lids (326) is provided with a rotating handle (327).

9. A multi-directional sand collection device as described in claim 8, characterized in that, The reset assembly (33) includes a connecting rod (331) installed inside the support column (1) and a piston plate (332) fixed to the top of the connecting rod (331). A third filter screen (333) is fixed inside the support column (1). The bottom of the connecting rod (331) passes through the third filter screen (333). Several grooves (11) are provided on the support column (1). The third filter screen (333) is located at the bottom of the grooves (11). A third spring (334) is sleeved on the connecting rod (331). A crossbar (335) is fixed on the connecting rod (331). The crossbar (335) is located inside the grooves (11). The end of the crossbar (335) extends to the outside of the support column (1).

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