Water delivery pipe network liquid level monitoring equipment

Abstract

The utility model relates to the technical field of monitoring equipment, in particular to water delivery pipe network liquid level monitoring equipment. The device comprises a device box, one side of the device box is provided with a display panel, the surface of the device box is provided with a control key, the inner wall of the device box is electrically connected with a transmission line, one end, far away from the device box, of the transmission line is electrically connected with a sensor, one side of the device box is provided with an auxiliary structure, and the auxiliary structure is connected with the control key. The auxiliary structure comprises a fixing plate. According to the utility model, through the arrangement of the auxiliary structure, the transmission line can be conveniently stored, the transmission line can be rapidly limited and fixed, and the situation that the transmission line is damaged due to knotting and winding in the use process of the transmission line is avoided, so that the measurement accuracy and efficiency are improved; and personnel do not need to rearrange and straighten out, so that the labor intensity of the personnel is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of monitoring equipment, in particular to a water delivery pipe network liquid level monitoring device. Background Art

[0002] The monitoring equipment is composed of an equipment box, a display panel, sensors, control keys and transmission lines. It is mainly used to monitor the liquid level of a water supply network and is relatively common in the prior art.

[0003] In the prior art, since the lengths of water pipe networks vary greatly, it is often necessary to equip transmission lines of considerable length. When the existing monitoring equipment for water pipe networks is in use, if the length of the measured water pipe is shorter, the transmission lines are randomly entangled and stacked on the ground, making it easy for the transmission lines to become tangled. Long-term use can also easily cause damage to the transmission lines, affecting the accuracy and efficiency of the measurements. At the same time, when measuring another set of longer or shorter water pipes, it is necessary to rearrange and straighten the transmission lines before re-measuring, which is very time-consuming and labor-intensive. Utility Model Content

[0004] The utility model aims to solve the problem that when the monitoring equipment for water pipe network in the prior art is used, if the length of the measured water pipe is short, the transmission line is disorderly entangled and stacked on the ground, which makes the transmission line easy to be tangled and entangled. Long-term use is also easy to cause damage to the transmission line, affecting the accuracy and efficiency of measurement. At the same time, when measuring another group of longer or shorter water pipes, it is necessary to rearrange and straighten the transmission line before re-measuring, which is very time-consuming and laborious. A water pipe network liquid level monitoring device is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a water supply network liquid level monitoring device, including a device box, a display panel is installed on one side of the device box, a control key is installed on the surface of the device box, the inner wall of the device box is electrically connected to a transmission line, and the end of the transmission line away from the device box is electrically connected to a sensor, and an auxiliary structure is provided on one side of the device box, and the auxiliary structure includes a fixing plate, the fixing plate is fixedly connected to the device box, the inner wall of the fixing plate is fixedly connected to a fixing column, the transmission line is wound on the arc surface of the fixing column, and the inner wall of the fixing plate is opened The cam is provided with two positioning grooves, one side of the fixed plate is fixedly connected to a fixed block, one side of the fixed block is fixedly connected to a rotating rod, an end of the rotating rod away from the fixed block is rotatably connected to a rotating block, a side of the rotating block close to the fixed plate is fixedly connected to a rotating plate, an upper surface of the rotating plate is fixedly connected to a rotating column, an upper surface of the rotating column is rotatably connected to an auxiliary block, a limiting groove is provided on an inner wall of the auxiliary block, a side of the fixed plate away from the fixed block is fixedly connected to a connecting block, an inner wall of the connecting block is slidably connected to a clamping block, a side of the clamping block away from the fixed plate is fixedly connected to a moving rod, and the moving rod is slidably connected to the connecting block.

[0006] The effect achieved by the above components is: by setting up the auxiliary structure, when the personnel place the sensor at the monitoring position of the water supply network, the excessively long part of the transmission line can be wrapped around the arc surface of the fixed column, and then the excessively long transmission line can be fixed to the inner wall of the fixed plate by rotating the rotating plate and the auxiliary block, thereby making it convenient for personnel to quickly sort out the excessively long transmission line.

[0007] Preferably, one end of the moving rod away from the clamping block is fixedly connected to a pull ring, and the cross-section of the pull ring is circular.

[0008] The effect achieved by the above components is that the pull ring can facilitate personnel to move the moving rod, which can increase the convenience of personnel's operation.

[0009] Preferably, an anti-skid pad is fixedly connected to the arc surface of the fixing column, and the cross-section of the anti-skid pad is a hollow circle.

[0010] The effect achieved by the above components is that the anti-slip pad can increase the friction between the transmission line and the fixed column, and can prevent the transmission line from slipping off the arc surface of the fixed column when people are winding the transmission line.

[0011] Preferably, the arc surface of the moving rod is sleeved with a spring, and two ends of the spring are fixedly connected to the moving rod and the connecting block respectively.

[0012] The effect achieved by the above components is that the spring can fix the moving rod and prevent the card block from sliding out of the inner wall of the card slot by itself.

[0013] Preferably, a protective structure is provided on the side of the equipment box close to the control key, and the protective structure includes two vertical plates, the two vertical plates are fixedly connected to the equipment box, a mounting plate is fixedly connected to the side where the two vertical plates are close to each other, an auxiliary groove is provided on the inner wall of the mounting plate, a sliding groove is provided on the inner wall of the vertical plate, a moving block is slidably connected to the inner wall of the sliding groove, a protective plate is fixedly connected to the side where the two moving blocks are close to each other, a connecting block and a handle are fixedly connected to the side of the protective plate away from the control key, an auxiliary rod is rotatably connected to the inner wall of the connecting block, the arc surface of the auxiliary rod is fixedly connected to the mounting block, and a positioning block is fixedly connected to the upper surface of the mounting block.

[0014] The effect achieved by the above components is: by setting up a protective structure, when the personnel operate the control keys to complete the debugging of the monitoring equipment, the personnel can protect the control keys by moving the protective plate and rotating the mounting block, thereby preventing subsequent personnel from accidentally touching the control keys when recording and observing the display panel, affecting the monitoring accuracy of the equipment.

[0015] Preferably, a limit rod is fixedly connected to the inner wall of the slide groove, and the limit rod is slidably connected to the moving block.

[0016] The effect achieved by the above components is that the limiting rod can limit the moving block, thereby preventing the moving block from being dislocated when sliding on the inner wall of the sliding groove.

[0017] Preferably, a magnetic block is fixedly connected to the inner wall of the auxiliary groove, and an iron block is fixedly connected to the inner wall of the positioning block.

[0018] The effect achieved by the above components is that the magnetic block and the iron block can play the effect of fixing the positioning block, and can prevent the positioning block from sliding out of the auxiliary slot when a person touches the equipment box.

[0019] In summary, the beneficial effects of the utility model are:

[0020] In the utility model, when personnel want to place sensors to monitor the water supply network, they can first reserve the length they need to use, and then pass it through the inside of the positioning groove on one side, and then wind the overlong part of the transmission line on the anti-skid pad, wherein the anti-skid pad can increase the friction between the transmission line and the fixed column, and can prevent the transmission line from slipping off the arc surface of the fixed column during the process of winding the transmission line. After the winding is completed, the remaining transmission line is passed through the inside of the positioning groove on the other side, and then the personnel rotates the rotating plate to rotate the rotating plate in the direction close to the fixed plate, and the rotating plate drives the rotating block and the rotating column to rotate in the direction close to the fixed plate, and the rotating column drives the auxiliary block to rotate in the direction close to the fixed plate until the rotating plate fits with the fixed plate, and then the personnel rotates the auxiliary block to rotate the auxiliary block in the direction close to the connecting block until the auxiliary block slides into the inner wall of the connecting block, and when the auxiliary block slides into the inner wall of the connecting block, it will abut against the card block, and then drive the card block to move in the direction away from the fixed plate. The card block drives the moving rod to move in the direction away from the fixed plate, and the moving rod drives the spring to stretch and also drives the pull ring to move in the direction away from the fixed plate, wherein the pull ring can facilitate personnel to move the moving rod, which can increase the convenience of personnel operation. When the card block contacts the limit slot, the spring will rebound and drive the moving rod to move in the direction close to the limit slot, wherein the spring can fix the moving rod to prevent the card block from sliding out of the inner wall of the card slot by itself, and then the moving rod drives the pull ring and the card block to move in the direction close to the limit slot until the card block slides into the inner wall of the limit slot. At this time, the personnel can directly place the sensor at the position to be monitored. By setting up an auxiliary structure, the transmission line can be conveniently stored, and the transmission line can also be quickly limited and fixed to avoid the transmission line being damaged due to knotting and entanglement during use, thereby improving the accuracy and efficiency of measurement, and there is no need for personnel to reorganize and straighten it, thereby reducing the labor intensity of personnel.

[0021] In the utility model, when the personnel operate the control key to debug the monitoring equipment, the personnel can first use the handle to drive the protective plate to move in the direction close to the mounting plate, wherein the protective plate drives the connecting block and the two moving blocks to move in the direction close to the mounting plate, the connecting block drives the auxiliary rod to move in the direction close to the mounting plate, the auxiliary rod drives the mounting block to move in the direction close to the mounting plate, the mounting block drives the positioning block to move in the direction close to the mounting plate, the positioning block drives the iron block to move in the direction close to the mounting plate, and the slider slides on the arc surface of the limit rod, wherein the limit rod can limit the moving block, which can prevent the moving block from moving on the inner wall of the slide groove Misalignment occurs during sliding until the protective plate fits against the mounting plate, and then the personnel rotates the mounting block to rotate in the direction close to the magnetic block. The mounting block drives the auxiliary rod and the positioning block to rotate in the direction close to the magnetic block, and the positioning block drives the iron block to rotate in the direction of the magnetic block until the positioning block slides into the inner wall of the auxiliary groove so that the magnetic block and the iron block are adsorbed. The magnetic block and the iron block can fix the positioning block, which can prevent the positioning block from sliding out of the auxiliary groove when personnel touch the equipment box. By setting up a protective structure, the effect of protecting the control keys is achieved, which can prevent subsequent personnel from accidentally touching the control keys when recording and observing the display panel, thereby affecting the monitoring accuracy of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 It is a schematic diagram of the auxiliary structure of the utility model;

[0024] Figure 3 For this utility model Figure 2 A magnified image of point A;

[0025] Figure 4 For this utility model Figure 2 The enlarged view of point B;

[0026] Figure 5 This is a schematic diagram of the protective structure of the utility model;

[0027] Figure 6 It is a partial structural schematic diagram of the protective structure of the utility model;

[0028] Figure 7 For this utility model Figure 5 Enlarged view of point C.

[0029] Legend: 1. Equipment box; 2. Display panel; 3. Auxiliary structure; 301. Fixed plate; 302. Positioning slot; 303. Rotating plate; 304. Fixed block; 305. Rotating rod; 306. Rotating block; 307. Fixed column; 308. Anti-skid pad; 309. Connecting block; 310. Block; 311. Moving rod; 312. Spring; 313. Pull ring; 314. Rotating column; 315. Auxiliary block; 3 16. Limiting groove; 4. Protective structure; 401. Vertical plate; 402. Mounting plate; 403. Auxiliary groove; 404. Magnetic block; 405. Slide groove; 406. Limiting rod; 407. Moving block; 408. Protective plate; 409. Handle; 410. Connecting block; 411. Auxiliary rod; 412. Mounting block; 413. Iron block; 414. Positioning block; 5. Sensor; 6. Control key; 7. Transmission line. DETAILED DESCRIPTION

[0030] Reference Figure 1 As shown, the utility model provides a technical solution: a water supply network liquid level monitoring device, including an equipment box 1, a display panel 2 is installed on one side of the equipment box 1, a control key 6 is installed on the surface of the equipment box 1, the inner wall of the equipment box 1 is electrically connected to a transmission line 7, the end of the transmission line 7 away from the equipment box 1 is electrically connected to a sensor 5, an auxiliary structure 3 is provided on one side of the equipment box 1, and a protective structure 4 is provided on the side of the equipment box 1 close to the control key 6.

[0031] The specific settings and functions of the auxiliary structure 3 and the protective structure 4 are described in detail below.

[0032] Reference Figures 2 to 4As shown, in this embodiment: the auxiliary structure 3 includes a fixing plate 301, the fixing plate 301 is fixedly connected to the equipment box 1, the inner wall of the fixing plate 301 is fixedly connected with a fixing column 307, the transmission line 7 is wound on the arc surface of the fixing column 307, the inner wall of the fixing plate 301 is provided with two positioning grooves 302, one side of the fixing plate 301 is fixedly connected with a fixing block 304, one side of the fixing block 304 is fixedly connected with a rotating rod 305, the end of the rotating rod 305 away from the fixing block 304 is rotatably connected with a rotating block 306, and the rotating block 306 is close to the fixing plate 301. A rotating plate 303 is fixedly connected to one side, a rotating column 314 is fixedly connected to the upper surface of the rotating plate 303, an auxiliary block 315 is rotatably connected to the upper surface of the rotating column 314, a limiting groove 316 is provided on the inner wall of the auxiliary block 315, a connecting block 309 is fixedly connected to the side of the fixed plate 301 away from the fixed block 304, a clamping block 310 is slidably connected to the inner wall of the connecting block 309, a moving rod 311 is fixedly connected to the side of the clamping block 310 away from the fixed plate 301, and the moving rod 311 is slidably connected to the connecting block 309. By setting the auxiliary structure 3, when a person puts After the sensor 5 is placed at the monitoring position of the water pipe network, the excessively long portion of the transmission line 7 can be wound around the arc surface of the fixed column 307, and then the excessively long transmission line 7 can be fixed to the inner wall of the fixed plate 301 by rotating the rotating plate 303 and the auxiliary block 315, so that it is convenient for personnel to quickly sort out the excessively long transmission line 7. The end of the moving rod 311 away from the block 310 is fixedly connected with a pull ring 313, and the cross-section of the pull ring 313 is circular. The pull ring 313 can facilitate personnel to move the moving rod 311, which can increase the convenience of personnel operation and fix it. The arc surface of the column 307 is fixedly connected with an anti-skid pad 308, and the cross-section of the anti-skid pad 308 is a hollow circle. The anti-skid pad 308 can increase the friction between the transmission line 7 and the fixed column 307, and can prevent the transmission line 7 from slipping off the arc surface of the fixed column 307 when people are winding the transmission line 7. The arc surface of the moving rod 311 is sleeved with a spring 312, and the two ends of the spring 312 are respectively fixedly connected to the moving rod 311 and the connecting block 309. The spring 312 can fix the moving rod 311, and can prevent the card block 310 from sliding out of the inner wall of the card slot by itself.

[0033] Reference Figures 5 to 7As shown, in this embodiment: the protective structure 4 includes two vertical plates 401, the two vertical plates 401 are fixedly connected to the equipment box 1, the side of the two vertical plates 401 close to each other is fixedly connected with a mounting plate 402, the inner wall of the mounting plate 402 is provided with an auxiliary groove 403, the inner wall of the vertical plate 401 is provided with a slide groove 405, the inner wall of the slide groove 405 is slidably connected with a moving block 407, the side of the two moving blocks 407 close to each other is fixedly connected with a protective plate 408, the side of the protective plate 408 away from the control key 6 is fixedly connected with a connecting block 410 and a handle 409, the inner wall of the connecting block 410 is rotatably connected with an auxiliary rod 411, the arc surface of the auxiliary rod 411 is fixedly connected with a mounting block 412, and the upper surface of the mounting block 412 is fixedly connected with a positioning block 414. By setting the protective structure 4, when a person operates the control After the key 6 is debugged, the personnel can protect the control key 6 by moving the protective plate 408 and rotating the mounting block 412, so as to prevent the subsequent personnel from accidentally touching the control key 6 when recording and observing the display panel 2, thereby affecting the monitoring accuracy of the equipment. The inner wall of the slide groove 405 is fixedly connected to the limit rod 406, and the limit rod 406 is slidably connected to the moving block 407. The limit rod 406 can limit the moving block 407, so as to prevent the moving block 407 from being misplaced when sliding on the inner wall of the slide groove 405. The inner wall of the auxiliary groove 403 is fixedly connected to the magnetic block 404, and the inner wall of the positioning block 414 is fixedly connected to the iron block 413. The magnetic block 404 and the iron block 413 can play the effect of fixing the positioning block 414, so as to prevent the positioning block 414 from sliding out of the auxiliary groove 403 when the personnel touch the equipment box 1.

[0034] Working principle: when personnel want to place the sensor 5 to monitor the water supply network, they can first reserve the length they need to use, and then pass it through the inside of the positioning groove 302 on the other side, and then wind the overlong part of the transmission line 7 on the anti-skid pad 308, wherein the anti-skid pad 308 can increase the friction between the transmission line 7 and the fixed column 307, and can prevent the transmission line 7 from slipping off the arc surface of the fixed column 307 during the process of winding the transmission line 7. After the winding is completed, the remaining transmission line 7 is passed through the inside of the positioning groove 302 on the other side, and then the personnel rotates the rotating plate 303 to make the rotating plate 303 close to the fixed column 307. The rotating plate 303 drives the rotating block 306 and the rotating column 314 to rotate in the direction close to the fixed plate 301, and the rotating column 314 drives the auxiliary block 315 to rotate in the direction close to the fixed plate 301 until the rotating plate 303 fits with the fixed plate 301, and then the personnel rotates the auxiliary block 315 to make the auxiliary block 315 rotate in the direction close to the connecting block 309 until the auxiliary block 315 slides into the inner wall of the connecting block 309. When the auxiliary block 315 slides into the inner wall of the connecting block 309, it will abut against the card block 310, and then drive the card block 310 to move away from the fixed plate 301. The block 310 drives the moving rod 311 to move in the direction away from the fixed plate 301, and the moving rod 311 drives the spring 312 to stretch and drives the pull ring 313 to move in the direction away from the fixed plate 301, wherein the pull ring 313 can facilitate personnel to move the moving rod 311, and can increase the convenience of personnel operation. When the block 310 contacts the limiting groove 316, the spring 312 will rebound and drive the moving rod 311 to move in the direction close to the limiting groove 316, wherein the spring 312 can fix the moving rod 311, and can prevent the block 310 from moving by itself Slide out of the inner wall of the slot, and then the moving rod 311 drives the pull ring 313 and the card block 310 to move in the direction close to the limit slot 316 until the card block 310 slides into the inner wall of the limit slot 316. At this time, the personnel can directly place the sensor 5 at the position to be monitored. By setting up the auxiliary structure 3, the transmission line 7 can be conveniently stored, and the transmission line 7 can also be quickly limited and fixed to avoid the transmission line 7 from being tangled and entangled during use, thereby avoiding the situation where the transmission line 7 is damaged, thereby improving the accuracy and efficiency of the measurement, and there is no need for personnel to reorganize and straighten it, thereby reducing the labor intensity of personnel.

[0035] In addition, when the personnel operate the control key 6 to debug the monitoring equipment, the personnel can first use the handle 409 to drive the protective plate 408 to move in the direction close to the mounting plate 402, wherein the protective plate 408 drives the connecting block 410 and the two moving blocks 407 to move in the direction close to the mounting plate 402, the connecting block 410 drives the auxiliary rod 411 to move in the direction close to the mounting plate 402, the auxiliary rod 411 drives the mounting block 412 to move in the direction close to the mounting plate 402, the mounting block 412 drives the positioning block 414 to move in the direction close to the mounting plate 402, the positioning block 414 drives the iron block 413 to move in the direction close to the mounting plate 402, and the slider slides on the arc surface of the limit rod 406, wherein the limit rod 406 can limit the moving block 407, which can prevent the moving block 407 from moving on the inner wall of the slide groove 405 Misalignment occurs during sliding until the protective plate 408 fits with the mounting plate 402. Then the personnel rotates the mounting block 412 to rotate in the direction close to the magnetic block 404. The mounting block 412 drives the auxiliary rod 411 and the positioning block 414 to rotate in the direction close to the magnetic block 404. The positioning block 414 drives the iron block 413 to rotate in the direction of the magnetic block 404 until the positioning block 414 slides into the inner wall of the auxiliary groove 403 so that the magnetic block 404 and the iron block 413 are adsorbed. The magnetic block 404 and the iron block 413 can fix the positioning block 414, and can prevent the positioning block 414 from sliding out of the auxiliary groove 403 when the personnel touches the equipment box 1. By setting the protective structure 4, the control key 6 is protected, and it can be prevented that the subsequent personnel accidentally touch the control key 6 when recording and observing the display board 2, thereby affecting the monitoring accuracy of the equipment.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

Claims

1. A water supply network liquid level monitoring device, comprising a device box (1), characterized in that: A display panel (2) is installed on one side of the device box (1), a control key (6) is installed on the surface of the device box (1), an inner wall of the device box (1) is electrically connected to a transmission line (7), an end of the transmission line (7) away from the device box (1) is electrically connected to a sensor (5), an auxiliary structure (3) is provided on one side of the device box (1), the auxiliary structure (3) comprises a fixing plate (301), the fixing plate (301) is fixedly connected to the device box (1), a fixing column (307) is fixedly connected to the inner wall of the fixing plate (301), the transmission line (7) is wound around the arc surface of the fixing column (307), the inner wall of the fixing plate (301) is provided with two positioning grooves (302), one side of the fixing plate (301) is fixedly connected to a fixing block (304), one side of the fixing block (304) is fixedly connected to A rotating rod (305) is connected, and one end of the rotating rod (305) away from the fixed block (304) is rotatably connected to a rotating block (306), and the side of the rotating block (306) close to the fixed plate (301) is fixedly connected to a rotating plate (303), and the upper surface of the rotating plate (303) is fixedly connected to a rotating column (314), and the upper surface of the rotating column (314) is rotatably connected to an auxiliary block (315), and a limiting groove (316) is provided on the inner wall of the auxiliary block (315), and the side of the fixed plate (301) away from the fixed block (304) is fixedly connected to a connecting block (309), and the inner wall of the connecting block (309) is slidably connected to a clamping block (310), and the side of the clamping block (310) away from the fixed plate (301) is fixedly connected to a moving rod (311), and the moving rod (311) is slidably connected to the connecting block (309).

2. A water supply network liquid level monitoring device according to claim 1, characterized in that: One end of the moving rod (311) away from the clamping block (310) is fixedly connected to a pull ring (313), and the cross section of the pull ring (313) is circular.

3. The water supply network liquid level monitoring device according to claim 1, characterized in that: The arc surface of the fixing column (307) is fixedly connected with an anti-skid pad (308), and the cross section of the anti-skid pad (308) is a hollow circle.

4. The water supply network liquid level monitoring device according to claim 1, characterized in that: The arc surface of the moving rod (311) is sleeved with a spring (312), and the two ends of the spring (312) are respectively fixedly connected to the moving rod (311) and the connecting block (309).

5. The water supply network liquid level monitoring device according to claim 1, characterized in that: A protective structure (4) is provided on a side of the device box (1) close to the control key (6), and the protective structure (4) includes two vertical plates (401), the two vertical plates (401) are fixedly connected to the device box (1), and a mounting plate (402) is fixedly connected to the side of the two vertical plates (401) close to each other, and an auxiliary groove (403) is provided on the inner wall of the mounting plate (402), and a sliding groove (405) is provided on the inner wall of the vertical plate (401), and the inner wall of the sliding groove (405) is slidably connected to the device box (1). A moving block (407) is provided, and a protective plate (408) is fixedly connected to the side where the two moving blocks (407) are close to each other, and a connecting block (410) and a handle (409) are fixedly connected to the side where the protective plate (408) is away from the control key (6). The inner wall of the connecting block (410) is rotatably connected to an auxiliary rod (411), the arc surface of the auxiliary rod (411) is fixedly connected to a mounting block (412), and the upper surface of the mounting block (412) is fixedly connected to a positioning block (414).

6. A water supply network liquid level monitoring device according to claim 5, characterized in that: The inner wall of the slide groove (405) is fixedly connected to a limiting rod (406), and the limiting rod (406) is slidably connected to a moving block (407).

7. The water supply network liquid level monitoring device according to claim 5, characterized in that: The inner wall of the auxiliary groove (403) is fixedly connected with a magnetic block (404), and the inner wall of the positioning block (414) is fixedly connected with an iron block (413).

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