Shield tunneling machine slurry pump shell detection device

Abstract

The invention relates to the technical field of slurry pumps, and discloses a shield tunneling machine slurry pump shell detection device which comprises a support, a pair of clamping blocks used for clamping a slurry pump shell are arranged on the support, an air cylinder is arranged on the support, a motor is installed on a piston rod of the air cylinder, and a driving sleeve is installed on an output shaft of the motor. A driven sleeve is rotatably mounted at the bottom end of the driving sleeve, a spring is arranged on the driven sleeve, one end of the spring is connected with the driven sleeve, the other end of the spring is connected with the driving sleeve, a probe used for detecting whether a crack exists in the slurry pump shell is arranged on the side portion of the driven sleeve, and the probe is clamped into the crack when the crack exists in the slurry pump shell. According to the position change of the probe before and after detection, whether the inner wall of the slurry pump shell has the surface crack can be judged, the process not only saves manpower, but also reduces the omission ratio due to the fact that visual inspection is not needed, and meanwhile, the inner wall of the slurry pump with a narrow space can be detected.

Description

Technical Field

[0001] The present invention relates to the technical field of mud pumps, in particular to a shield machine mud pump casing detection device. Background Art

[0002] During the excavation process of the shield machine, a mixture of slag and mud will be produced. During the construction of the shield machine, a mud pump is needed to transport the mud mixture to the designated slag discharge location. The transported mud often contains some sand and gravel. Due to the high hardness of sand and gravel particles, when the sand and gravel flow through the surface cracks of the mud pump, it will cause continuous wear on the crack edges, expand the width and depth of the cracks, and wear will weaken the material strength around the cracks, making the cracks easier to expand. Therefore, when the mud pump is cast, the mud pump casing must be tested for surface cracks to ensure the service life of the mud pump. The mud pump casing with surface cracks must also be welded and repaired.

[0003] In the existing technology, when detecting whether there are cracks on the surface of the mud pump casing, manual observation of the mud pump surface is mainly used, which is manpower-consuming and prone to omissions. Especially when inspecting the inside of the mud pump discharge port, it is difficult to perform manual observation operations due to the narrow space. Therefore, it does not meet the existing needs. In this regard, we propose a shield machine mud pump casing detection device. Summary of the Invention

[0004] The present invention provides a shield machine mud pump casing detection device, which has the beneficial effect that the probe will automatically get stuck in the crack during detection, is not easy to miss detection, does not require manual observation and operation, saves manpower, and can also detect when the inner wall of the mud pump is narrow. It solves the problem mentioned in the above background technology that when detecting whether there are cracks on the surface of the mud pump casing in the existing technology, in order to facilitate the positioning of the cracks, manual observation of the mud pump surface is mainly adopted, which is manpower-consuming and prone to missed detection, especially when inspecting the inside of the mud pump discharge port, it is difficult for manual observation to be performed due to the narrow space.

[0005] The present invention provides the following technical solution: a shield machine mud pump casing detection device, comprising a bracket, a pair of clamping blocks provided on the bracket, a cylinder provided on the bracket, a motor installed on the piston rod of the cylinder, an active sleeve installed on the output shaft of the motor, a passive sleeve rotatably installed on the bottom end of the active sleeve, a spring provided on the passive sleeve, one end of the spring connected to the passive sleeve, and the other end of the spring connected to the active sleeve; A probe is provided on the side of the passive sleeve. When a crack exists in the mud pump housing, the probe is stuck in the crack.

[0006] As an optional solution of the shield machine mud pump casing detection device described in the present invention, a synchronous sleeve is provided on the side of the passive sleeve, a movable block is slidably installed in the synchronous sleeve, the probe is installed on the movable block, and a No. 1 compression spring is provided in the synchronous sleeve, and the other end of the No. 1 compression spring is in contact with the movable block.

[0007] As an optional solution of the shield machine mud pump casing detection device described in the present invention, wherein: a pair of positioning sleeves are installed on the piston rod of the cylinder, a sliding rod is slidably installed in the positioning sleeve, an annular plate is installed at the bottom end of the sliding rod, a fixing sleeve is provided on the annular plate, a first limiting ring and a second limiting ring are provided inside the fixing sleeve, the first limiting ring is located at the bottom of the second limiting ring, and the inner diameter of the first limiting ring is smaller than the inner diameter of the second limiting ring; A limit rod is installed on the movable block. Before detection, the limit rod conflicts with the second limit ring. During detection, the limit rod conflicts with the first limit ring.

[0008] As an optional solution of the shield machine mud pump casing detection device described in the present invention, wherein: a threaded rod is rotatably mounted on the side of one of the clamping blocks, the threaded rod is threadedly connected to the bracket, a No. 1 tension spring is sleeved on the threaded rod, one end of the No. 1 tension spring is connected to the bracket, and the other end of the No. 1 tension spring is connected to the clamping block; A crossbar is installed on the side of the other clamping block, and the crossbar is slidably installed on the bracket; A water tank is provided at the bottom of the bracket, and the cross bar is in transmission connection with the passive sleeve. If the test is qualified, the cross bar drives the clamping block to separate from the mud pump housing.

[0009] As an optional solution of a shield machine mud pump casing detection device described in the present invention, a moving block is slidably installed on the cross bar, a No. 2 compression spring is connected between the moving block and the clamping block, a No. 2 tension spring is connected between the moving block and the bracket, and the moving block is transmission-connected to the passive sleeve.

[0010] As an optional solution of the shield machine mud pump housing detection device described in the present invention, wherein: the bracket is provided with a fixed rod, a rotating plate is hinged on the fixed rod, and a No. 1 torsion spring is provided on the fixed rod, one end of the No. 1 torsion spring is connected to the fixed rod, and the other end of the No. 1 torsion spring is connected to the rotating plate; A limit block is provided at the bottom end of the rotating plate, and the limit block is provided as a block with a trapezoidal cross section. The rotating plate is in transmission connection with the passive sleeve.

[0011] As an optional solution of the shield machine mud pump housing detection device described in the present invention, wherein: a groove is opened inside the passive sleeve, and the groove is set to be a groove with a trapezoidal cross-section; a trigger rod is slidably mounted on the active sleeve, and the trigger rod is set corresponding to the groove; A moving rod is slidably installed in the active sleeve, a wedge block is installed at the bottom end of the moving rod, a No. 3 compression spring is provided at the bottom of the wedge block, and the inclined surface of the wedge block contacts the trigger rod.

[0012] As an optional solution of the shield machine mud pump housing detection device described in the present invention, wherein: an unlocking rod is installed at the top of the moving rod, and a resistance plate is hinged at the top of the rotating plate, and the resistance plate is located directly below the unlocking rod; A No. 2 torsion spring is provided at one end of the contact plate, one end of the No. 2 torsion spring is connected to the contact plate, and the other end of the No. 2 torsion spring is connected to the rotating plate; The edges of the abutment plate are configured as chamfered corners, and a limiting plate for limiting the abutment plate is fixedly mounted on the side of the rotating plate.

[0013] As an optional solution of the shield machine mud pump casing detection device described in the present invention, wherein: a fixed seat is provided on the side of the passive sleeve, a sliding rod is slidably installed in the fixed seat, a brush plate is provided at the bottom end of the sliding rod, a plurality of brush heads are provided on the brush plate, a tension spring is connected between the fixed seat and the brush plate, and the tension spring is sleeved on the sliding rod; A vertical rod is installed on the annular plate, a fixing ring is installed on the top of the vertical rod, a plurality of No. 1 bumps are distributed in a ring at the bottom of the fixing ring, a No. 2 bump is installed on the top of the No. 2 bump, the No. 1 bump and the No. 2 bump are both configured as arc-shaped bumps, and the No. 2 bump is in sliding contact with the arc surface of the No. 1 bump.

[0014] As an optional solution of the shield machine mud pump casing detection device described in the present invention, a convex strip is provided on the inner side of the No. 1 limit ring, one end of the convex strip is located directly below the limit rod, and the other end of the convex strip is provided corresponding to the brush plate.

[0015] The present invention has the following beneficial effects: 1. The shield machine mud pump casing detection device, during detection, the probe contacts the inner wall of the mud pump casing, the motor drives the active sleeve to rotate, and the active sleeve drives the passive sleeve to rotate through the spring arranged at the bottom of the active sleeve, further driving the probe to make a circular motion along the inner wall of the mud pump casing. If there is a crack on the inner wall of the mud pump, the probe will be stuck in the crack, so that the probe stops at the crack point, the passive sleeve stops rotating, and the spring accumulates force. If the detection is qualified, the probe and the passive sleeve will make a complete circular motion with the active sleeve, and the probe will return to its original position. The detection process does not require manual observation of the mud pump surface. According to the position change of the probe before and after the detection, it can be determined whether there is a surface crack on the inner wall of the mud pump casing, and the position of the crack can be located at the same time. This process not only saves manpower, but also reduces the missed detection rate because it does not require naked eye observation. At the same time, the inner wall of the mud pump with a narrow space can also be detected, thereby improving the practicality of the device.

[0016] 2. The shield machine mud pump casing detection device, after the mud pump is tested and qualified, the probe is not stuck in the crack, the passive sleeve and the active sleeve will not produce relative rotation, so the passive sleeve will not trigger the rod to move, so that the wedge block, moving rod and unlocking rod will not move, so the unlocking rod remains at a constant height when the active sleeve makes a circular motion, after the detection is completed, the unlocking rod and the side of the contact plate away from the limit plate are in contact, under the restriction of the limit plate, the contact plate does not deflect, and at the same time, under the resistance of the unlocking rod, the contact plate drives the rotating plate to deflect, at this time, the limit block installed at the bottom of the rotating plate is separated from the moving block, and the moving block, the No. 2 compression spring and the clamping block move in the direction away from the mud pump under the tension of the No. 2 tension spring, and the mud pump falls into the water tank below after the restriction is released. Therefore, the mud pump that has passed the test can automatically complete the unloading, reducing the manpower dismantling operation of the qualified mud pump, and the mud pump falls directly into the water tank, reducing the manpower handling process, further increasing the practicality of the device.

[0017] 3. The shield machine mud pump casing detection device, during detection, the brush plate, slide rod and fixed seat make circular motion with the passive sleeve, the brush head contacts the inner wall of the mud pump for cleaning, and at the same time the No. 2 bump contacts the No. 1 bump. With the cooperation of the tension spring, the No. 2 bump, slide rod and brush plate move up and down to improve the cleaning effect of the brush head. The brush head will brush off the dust, metal powder, etc. attached to the inner wall of the mud pump, so that the surface cracks of the inner wall of the mud pump are exposed to the outside, which is conducive to the smooth insertion of the probe into the crack, preventing the cracks from being missed during the probe detection, reducing the missed detection rate of the device, and improving the reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the present invention as a whole.

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the passive sleeve of the present invention.

[0020] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at point C in the middle.

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the active sleeve of the present invention.

[0022] Figure 5 Schematic diagram of the structure of the annular plate of the present invention.

[0023] Figure 6 It is a schematic diagram of the cross-sectional structure of the rotating plate of the present invention.

[0024] Figure 7 For the present invention Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0025] Figure 8 For the present invention Figure 6 Schematic diagram of the enlarged structure at point D in the middle.

[0026] Figure 9 For the present invention Figure 1 Schematic diagram of the enlarged structure at point B in the middle.

[0027] Figure 10 It is a schematic diagram of the cross-sectional structure of the fixing sleeve of the present invention.

[0028] Figure 11 It is a schematic diagram of the three-dimensional structure of the fixing sleeve of the present invention.

[0029] In the figure: 101, bracket; 102, clamping block; 201, cylinder; 202, motor; 203, positioning sleeve; 204, slide rod; 205, annular plate; 206, active sleeve; 208, passive sleeve; 209, fixed sleeve; 210, limiting rod; 211, probe; 212, movable block; 213, limiting ring No. 1; 214, limiting ring No. 2; 215, spring; 216, sleeve; 217, compression spring No. 1; 218, groove; 301, sink; 303, threaded rod; 304, handle; 305, tension spring No. 1; 306, crossbar; 307 , No. 2 tension spring; 308, moving block; 309, rotating plate; 310, fixed rod; 312, No. 2 compression spring; 313, moving rod; 314, unlocking rod; 315, wedge block; 316, vertical rod; 317, fixing ring; 318, No. 1 protrusion; 319, trigger rod; 320, No. 3 compression spring; 321, No. 1 torsion spring; 322, limiting block; 323, resistance plate; 324, No. 2 torsion spring; 325, limiting plate; 401, brush plate; 402, brush head; 403, tension spring; 404, sliding rod; 405, fixing seat; 406, No. 2 protrusion; 407, convex strip. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Example 1: This example aims to solve the problem that in the prior art, when detecting whether there are cracks on the surface of the mud pump housing, manual observation of the mud pump surface is mainly used, which is labor-intensive and prone to missed inspections. In particular, when inspecting the interior of the mud pump outlet, it is difficult for manual observation to be performed due to the narrow space. Figures 1 to 11 A shield machine mud pump casing detection device includes a bracket 101, a pair of clamping blocks 102 for clamping the mud pump casing are provided on the bracket 101, a cylinder 201 is provided on the piston rod of the cylinder 201, a motor 202 is installed on the output shaft of the motor 202, an active sleeve 206 is installed on the bottom end of the active sleeve 206, a passive sleeve 208 is rotatably installed, a spring 215 is provided on the passive sleeve 208, one end of the spring 215 is connected to the passive sleeve 208, and the other end of the spring 215 is connected to the active sleeve 206. A probe 211 for detecting whether there is a crack in the mud pump casing is provided on the side of the passive sleeve 208. When there is a crack in the mud pump casing, the probe 211 is stuck in the crack.

[0032] Among them, please refer to Figure 2 、 Figure 3 During testing, the probe 211 contacts the inner wall of the mud pump housing, and the motor 202 drives the active sleeve 206 to rotate. The active sleeve 206 drives the passive sleeve 208 to rotate via the spring 215 set at the bottom of the active sleeve 206, further driving the probe 211 to perform a circular motion along the inner wall of the mud pump housing. If there is a crack in the inner wall of the mud pump, the probe 211 will be stuck in the crack, the passive sleeve 208 will stop rotating, and the spring 215 will accumulate power. After the test, the mud pump is removed, the spring 215 is released, and the passive sleeve 208 is reset under the drive of the spring 215. Specifically, if the test is qualified, the probe 211 and the passive sleeve 208 will perform a complete circular motion with the active sleeve 206, and the probe 211 will return to its original position.

[0033] For details, see Figure 3 A synchronous sleeve 216 is provided on the side of the passive sleeve 208, and a movable block 212 is slidably installed in the synchronous sleeve 216. The probe 211 is installed on the movable block 212. A No. 1 compression spring 217 is provided in the synchronous sleeve 216, and the other end of the No. 1 compression spring 217 is in contact with the movable block 212.

[0034] Also, please refer to Figure 5 A pair of positioning sleeves 203 are installed on the piston rod of the cylinder 201, and a slide rod 204 is slidably installed in the positioning sleeve 203. An annular plate 205 is installed at the bottom of the slide rod 204. A fixing sleeve 209 is provided on the annular plate 205. A No. 1 limiting ring 213 and a No. 2 limiting ring 214 are provided inside the fixing sleeve 209. The No. 1 limiting ring 213 is located at the bottom of the No. 2 limiting ring 214, and the inner diameter of the No. 1 limiting ring 213 is smaller than the inner diameter of the No. 2 limiting ring 214. The movable block 212 is installed on the movable block 212. A limit rod 210 is installed. Before the test, the limit rod 210 conflicts with the No. 2 limit ring 214. During the test, since the annular plate 205 conflicts with the mud pump discharge flange, the annular plate 205 no longer moves, and the probe 211 and the limit rod 210 continue to move downward with the piston rod of the cylinder 201. When the probe 211 moves to the test position, the limit rod 210 disengages from the No. 2 limit ring 214, and the limit rod 210 conflicts with the No. 1 limit ring 213. At this time, the probe 211 conflicts with the inner wall of the mud pump.

[0035] Among them, the annular plate 205 is located just above the mud pump discharge port. During the inspection, the piston rod of the cylinder 201 extends downward, and the annular plate 205 gradually moves downward. Finally, the annular plate 205 fits the flange at the mud pump discharge port, and then the motor 202, the active sleeve 206 and the passive sleeve 208 continue to move downward. During this process, the limit rod 210 conflicts with the inner wall of the No. 2 limit ring 214 on the fixed sleeve 209. Under the limitation of the No. 2 limit ring 214, the probe 211 will not contact the inner wall of the mud pump discharge port as the passive sleeve 208 moves downward. When the probe 211 moves downward to the inspection position, the limit rod 210 no longer conflicts with the No. 2 limit ring 214, and the limit rod 210 conflicts with the inner wall of the No. 1 limit ring 213. At the same time, the probe 211 conflicts with the inner wall of the mud pump under the elastic force of the No. 1 compression spring 217 and proceeds to the next step of inspection.

[0036] In this embodiment, during the test, the probe 211 contacts the inner wall of the mud pump housing, the motor 202 drives the active sleeve 206 to rotate, and the active sleeve 206 drives the passive sleeve 208 to rotate through the spring 215 set at the bottom end of the active sleeve 206, further driving the probe 211 to make a circular motion along the inner wall of the mud pump housing. If there is a crack in the inner wall of the mud pump, the probe 211 will be stuck in the crack, so that the probe 211 stops at the crack point, the passive sleeve 208 stops rotating, and the spring 215 accumulates power. If the test is qualified, the probe 211 11 and the passive sleeve 208 will make a complete circular motion with the active sleeve 206, and the probe 211 will return to its original position. The detection process does not require manual observation of the mud pump surface. According to the position change of the probe 211 before and after the detection, it can be determined whether there are surface cracks on the inner wall of the mud pump shell, and the position of the cracks can be located at the same time. This process not only saves manpower, but also reduces the missed detection rate because it does not require naked eye observation. At the same time, the inner wall of the mud pump with a narrow space can also be detected, thereby improving the practicality of the device.

[0037] Example 2: This example aims to solve the problem that in order to reduce the labor cost of cleaning the mud pump, the mud pump will be finally cleaned only after it has passed the inspection. However, for the mud pump housing that has passed the inspection, it is still necessary to manually lift the mud pump to dismantle it and carry it to the water pool for cleaning, which is more labor-intensive. This example is an improvement made on the basis of Example 1. For details, please refer to Figures 1 to 11 A threaded rod 303 is rotatably installed on the side of one clamping block 102, and the threaded rod 303 is threadedly connected to the bracket 101. A No. 1 tension spring 305 is sleeved on the threaded rod 303, and one end of the No. 1 tension spring 305 is connected to the bracket 101, and the other end of the No. 1 tension spring 305 is connected to the clamping block 102. A cross bar 306 is installed on the side of the other clamping block 102, and the cross bar 306 is slidably installed on the bracket 101. A water tank 301 is provided at the bottom of the bracket 101, and the cross bar 306 is transmission-connected to the passive sleeve 208. If the inspection is qualified, the cross bar 306 drives the clamping block 102 to separate from the mud pump casing.

[0038] For details, please refer to Figure 6 A moving block 308 is slidably installed on the cross bar 306, a No. 2 compression spring 312 is connected between the moving block 308 and the clamping block 102, a No. 2 tension spring 307 is connected between the moving block 308 and the bracket 101, and the moving block 308 is transmission-connected to the passive sleeve 208.

[0039] Specifically, a fixed rod 310 is provided on the bracket 101, and a rotating plate 309 is hinged on the fixed rod 310. A torsion spring No. 1 321 is provided on the fixed rod 310. One end of the torsion spring No. 1 321 is connected to the fixed rod 310, and the other end of the torsion spring No. 1 321 is connected to the rotating plate 309. A limit block 322 for limiting the moving block 308 is provided at the bottom end of the rotating plate 309. The limit block 322 is set to a trapezoidal block with a cross-section, and the rotating plate 309 is transmission-connected to the passive sleeve 208.

[0040] Among them, please refer to Figure 2 、 Figure 4 A groove 218 is provided inside the passive sleeve 208, and the groove 218 is set to a groove with a trapezoidal cross-section. A trigger rod 319 is slidably installed on the active sleeve 206, and the trigger rod 319 is set corresponding to the groove 218. A moving rod 313 is slidably installed in the active sleeve 206, and a wedge block 315 is installed at the bottom end of the moving rod 313. A No. 3 compression spring 320 is set at the bottom of the wedge block 315, and the inclined surface of the wedge block 315 conflicts with the trigger rod 319.

[0041] In addition, an unlocking rod 314 is installed at the top of the moving rod 313, and a contact plate 323 is hinged at the top of the rotating plate 309. The contact plate 323 is located directly below the unlocking rod 314. A No. 2 torsion spring 324 is provided at one end of the contact plate 323. One end of the No. 2 torsion spring 324 is connected to the contact plate 323, and the other end of the No. 2 torsion spring 324 is connected to the rotating plate 309. The edges of the contact plate 323 are set to be chamfered, and a limiting plate 325 for limiting the contact plate 323 is fixedly installed on the side of the rotating plate 309.

[0042] It should be noted that before the detection, the unlocking rod 314 is located directly above the contact plate 323. When the piston rod of the cylinder 201 extends downward, the unlocking rod 314 and the moving rod 313 move downward along with the active sleeve 206. When the probe 211 reaches the detection point, the unlocking rod 314 and the contact plate 323 collide with the side close to the limit plate 325, and the contact plate 323 deflects to the side away from the limit plate 325. During the detection, the unlocking rod 314 and the moving rod 313 make circular motion along with the active sleeve 206.

[0043] For details, see Figure 4 If the test fails (surface cracks exist), the probe 211 is stuck in the crack, the passive sleeve 208 stops rotating, and the active sleeve 206 continues to rotate. The trigger rod 319 provided on the active sleeve 206 contacts the inclined surface of the groove 218, and the trigger rod 319 slides toward the inside of the active sleeve 206. At the same time, the trigger rod 319 contacts the wedge block 315 (see FIG. Figure 2), the wedge block 315 overcomes the elastic force of the No. 3 compression spring 320 and moves downward, and the moving rod 313 and the unlocking rod 314 move downward along with the wedge block 315. At this time, the height of the unlocking rod 314 is lower than the height of the contact plate 323. Therefore, after the detection is completed, the unlocking rod 314 does not contact the contact plate 323, and the moving block 308 cannot be unlocked, and the mud pump housing continues to stay on the bracket 101; If the mud pump passes the inspection and the probe 211 is not stuck in the crack, the passive sleeve 208 and the active sleeve 206 will not rotate relative to each other, so the passive sleeve 208 will not trigger the rod 319 to move, so that the wedge block 315, the moving rod 313, and the unlocking rod 314 will not move. Therefore, the height of the unlocking rod 314 remains unchanged when it moves in a circle with the active sleeve 206. After the inspection is completed, the unlocking rod 314 contacts the side of the contact plate 323 away from the limit plate 325. Under the restriction of the limit plate 325, the contact plate 323 does not deflect. Under the interference of the unlocking rod 314, the contact plate 323 drives the rotating plate 309 to deflect. At this time (see Figure 6 ) The limit block 322 at the bottom of the rotating plate 309 is disengaged from the moving block 308. The moving block 308, the second compression spring 312 and the clamping block 102 move away from the mud pump under the tension of the second tension spring 307. After the restriction is released, the mud pump falls into the water tank 301 below.

[0044] In addition, when installing a mud pump or removing an unqualified mud pump, the handle 304 is manually rotated to move the clamping block 102 so that the clamping block 102 presses against or moves away from the mud pump, thereby enabling loading and unloading of the mud pump.

[0045] In this embodiment: after the mud pump is tested and qualified, the probe 211 is not stuck in the crack, and the passive sleeve 208 and the active sleeve 206 do not rotate relative to each other, so the passive sleeve 208 does not trigger the rod 319 to move, so that the wedge block 315, the moving rod 313, and the unlocking rod 314 do not move. Therefore, the height of the unlocking rod 314 does not change when the active sleeve 206 makes a circular motion. After the test is completed, the unlocking rod 314 contacts the side of the contact plate 323 away from the limit plate 325. Under the restriction of the limit plate 325, the contact plate 323 does not deflect. At the same time, under the interference of the unlocking rod 314, the contact plate 323 drives the rotating plate 309 to deflect. At this time (see Figure 6 ) The limit block 322 installed at the bottom of the rotating plate 309 is disengaged from the moving block 308, and the moving block 308, the No. 2 compression spring 312 and the clamping block 102 move in the direction away from the mud pump under the tension of the No. 2 tension spring 307. After the restriction is released, the mud pump falls into the water tank 301 below. Therefore, the mud pump that has passed the inspection can automatically complete the unloading, reducing the manpower to dismantle the qualified mud pump. At the same time, the mud pump falls directly into the water tank, reducing the manpower carrying process, and further increasing the practicality of the device.

[0046] Example 3: This example aims to solve the problem that the mud pump housing needs to be polished after casting. After polishing, a certain amount of metal powder is attached to the inside of the mud pump housing. The metal powder covers the surface cracks, making it difficult for the probe to be smoothly inserted into the cracks, resulting in low detection accuracy. This example is an improvement made on the basis of Example 2. For details, please refer to Figures 1 to 11 A fixed seat 405 is provided on the side of the passive sleeve 208, and a slide rod 404 is slidably installed in the fixed seat 405. A brush plate 401 is provided at the bottom end of the slide rod 404, and a plurality of brush heads 402 are provided on the brush plate 401. A tension spring 403 is connected between the fixed seat 405 and the brush plate 401, and the tension spring 403 is sleeved on the slide rod 404. A vertical rod 316 is installed on the annular plate 205, and a fixing ring 317 is installed on the top of the vertical rod 316. A plurality of No. 1 protrusions 318 are distributed in a ring at the bottom of the fixing ring 317, and a No. 2 protrusion 406 is installed on the top of the No. 2 protrusion 406. The No. 1 protrusion 318 and the No. 2 protrusion 406 are both set as arc-shaped protrusions, and the No. 2 protrusion 406 is in sliding contact with the arc surface of the No. 1 protrusion 318.

[0047] Please note that, please refer to Figure 5 The brush plate 401 is set in front of the displacement direction of the probe 211. During detection, the brush plate 401, the slide rod 404 and the fixed seat 405 make circular motion with the passive sleeve 208, and the brush head 402 contacts the inner wall of the mud pump for cleaning. At the same time, the No. 2 protrusion 406 contacts the No. 1 protrusion 318. With the cooperation of the tension spring 403, the No. 2 protrusion 406, the slide rod 404 and the brush plate 401 move up and down, which is beneficial to improve the cleaning effect of the brush head 402.

[0048] Also, please refer to Figure 11 , a convex strip 407 is provided on the inner side of the first limiting ring 213, one end of the convex strip 407 is located just below the limiting rod 210, and the other end of the convex strip 407 is provided corresponding to the brush plate 401, please refer to Figure 10 Since there is a certain distance between the starting detection point of the probe 211 and the brush plate 401, this distance has not been cleaned, and the probe 211 should start detection at the starting position of the brush plate 401, so Figure 11 Before the test, the limit rod 210 contacts the second limit ring 214 and the ridge 407. During the test, the probe 211 moves in a circular motion along with the passive sleeve 208, while the brush head 402 cleans in front of the probe 211. When the probe 211 moves to the starting position of the brush head 402, the limit rod 210 installed on the movable block 212 contacts the first limit ring 213 (see Figure 2 、 Figure 3 ), the probe 211 is in contact with the inner wall of the mud pump for detection.

[0049] In this embodiment: during detection, the brush plate 401, the slide rod 404 and the fixed seat 405 make a circular motion with the passive sleeve 208, and the brush head 402 contacts the inner wall of the mud pump for cleaning. At the same time, the No. 2 protrusion 406 contacts the No. 1 protrusion 318. With the cooperation of the tension spring 403, the No. 2 protrusion 406, the slide rod 404 and the brush plate 401 move up and down, improving the cleaning effect of the brush head 402. The brush head 402 brushes off the dust, metal powder, etc. attached to the inner wall of the mud pump, exposing the surface cracks of the inner wall of the mud pump to the outside, which is conducive to the smooth insertion of the probe 211 into the crack, preventing the probe 211 from missing cracks during detection, reducing the missed detection rate of the device, and improving the reliability of the device.

[0050] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A shield machine mud pump housing detection device, comprising a bracket (101), wherein a pair of clamping blocks (102) are provided on the bracket (101), characterized in that: A cylinder (201) is provided on the bracket (101), a motor (202) is installed on the piston rod of the cylinder (201), an active sleeve (206) is installed on the output shaft of the motor (202), a passive sleeve (208) is rotatably installed on the bottom end of the active sleeve (206), a spring (215) is provided on the passive sleeve (208), one end of the spring (215) is connected to the passive sleeve (208), and the other end of the spring (215) is connected to the active sleeve (206); A probe (211) is provided on the side of the passive sleeve (208), and when a crack exists in the mud pump housing, the probe (211) is stuck in the crack.

2. A shield machine mud pump casing detection device according to claim 1, characterized in that: A synchronous sleeve (216) is provided on the side of the passive sleeve (208), a movable block (212) is slidably installed in the synchronous sleeve (216), the probe (211) is installed on the movable block (212), and a No. 1 compression spring (217) is provided in the synchronous sleeve (216), and the other end of the No. 1 compression spring (217) is in contact with the movable block (212).

3. A shield machine mud pump casing detection device according to claim 2, characterized in that: A pair of positioning sleeves (203) are installed on the piston rod of the cylinder (201), a slide rod (204) is slidably installed in the positioning sleeve (203), an annular plate (205) is installed at the bottom end of the slide rod (204), a fixing sleeve (209) is provided on the annular plate (205), a first limiting ring (213) and a second limiting ring (214) are provided inside the fixing sleeve (209), the first limiting ring (213) is located at the bottom of the second limiting ring (214), and the inner diameter of the first limiting ring (213) is smaller than the inner diameter of the second limiting ring (214); A limiting rod (210) is installed on the movable block (212). Before detection, the limiting rod (210) conflicts with the second limiting ring (214). During detection, the limiting rod (210) conflicts with the first limiting ring (213).

4. The shield machine mud pump casing detection device according to claim 1, characterized in that: A threaded rod (303) is rotatably mounted on the side of the clamping block (102), the threaded rod (303) is threadedly connected to the bracket (101), a tension spring (305) is sleeved on the threaded rod (303), one end of the tension spring (305) is connected to the bracket (101), and the other end of the tension spring (305) is connected to the clamping block (102); A crossbar (306) is installed on the side of the other clamping block (102), and the crossbar (306) is slidably installed on the bracket (101); A water tank (301) is provided at the bottom of the bracket (101), and the cross bar (306) is transmission-connected to the passive sleeve (208). If the test is qualified, the cross bar (306) drives the clamping block (102) to separate from the mud pump housing.

5. A shield machine mud pump casing detection device according to claim 4, characterized in that: A moving block (308) is slidably mounted on the crossbar (306), a No. 2 compression spring (312) is connected between the moving block (308) and the clamping block (102), a No. 2 tension spring (307) is connected between the moving block (308) and the bracket (101), and the moving block (308) is transmission-connected to the passive sleeve (208).

6. A shield machine mud pump casing detection device according to claim 5, characterized in that: The bracket (101) is provided with a fixing rod (310), a rotating plate (309) is hingedly connected to the fixing rod (310), a torsion spring (321) is provided on the fixing rod (310), one end of the torsion spring (321) is connected to the fixing rod (310), and the other end of the torsion spring (321) is connected to the rotating plate (309); A limiting block (322) is provided at the bottom end of the rotating plate (309), and the limiting block (322) is configured as a block having a trapezoidal cross section. The rotating plate (309) is in transmission connection with the passive sleeve (208).

7. A shield machine mud pump casing detection device according to claim 6, characterized in that: A groove (218) is provided inside the passive sleeve (208), and the groove (218) is configured as a groove with a trapezoidal cross-section. A trigger rod (319) is slidably mounted on the active sleeve (206), and the trigger rod (319) is configured to correspond to the groove (218). A moving rod (313) is slidably installed in the active sleeve (206), a wedge block (315) is installed at the bottom end of the moving rod (313), a No. 3 compression spring (320) is provided at the bottom of the wedge block (315), and the inclined surface of the wedge block (315) contacts the trigger rod (319).

8. The shield machine mud pump casing detection device according to claim 7, characterized in that: An unlocking rod (314) is installed at the top of the moving rod (313), and a contact plate (323) is hingedly connected to the top of the rotating plate (309), and the contact plate (323) is located directly below the unlocking rod (314); A second torsion spring (324) is provided at one end of the contact plate (323), one end of the second torsion spring (324) is connected to the contact plate (323), and the other end of the second torsion spring (324) is connected to the rotating plate (309); The edges of the abutment plate (323) are configured as chamfered corners, and a limiting plate (325) for limiting the abutment plate (323) is fixedly mounted on the side of the rotating plate (309).

9. The shield machine mud pump casing detection device according to claim 3, characterized in that: A fixed seat (405) is provided on the side of the passive sleeve (208), a slide rod (404) is slidably installed in the fixed seat (405), a brush plate (401) is provided at the bottom end of the slide rod (404), a plurality of brush heads (402) are provided on the brush plate (401), a tension spring (403) is connected between the fixed seat (405) and the brush plate (401), and the tension spring (403) is sleeved on the slide rod (404); A vertical rod (316) is installed on the annular plate (205), a fixing ring (317) is installed on the top of the vertical rod (316), a plurality of No. 1 protrusions (318) are distributed in an annular manner on the bottom of the fixing ring (317), a No. 2 protrusion (406) is installed on the top of the No. 2 protrusion (406), the No. 1 protrusion (318) and the No. 2 protrusion (406) are both configured as arc-shaped protrusions, and the No. 2 protrusion (406) is in sliding contact with the arc-shaped surface of the No. 1 protrusion (318).

10. A shield machine mud pump casing detection device according to claim 9, characterized in that: A convex strip (407) is provided on the inner side of the No. 1 limiting ring (213), one end of the convex strip (407) is located directly below the limiting rod (210), and the other end of the convex strip (407) is provided corresponding to the brush plate (401).

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