Sludge water depth separate measuring device for ditch

Abstract

The invention provides a silt water depth separate measurement device for a ditch. The silt water depth separate measurement device comprises a first rod body and a second rod body, one end of the first rod body is provided with an axially-extending insertion hole, and the other end of the first rod body is provided with a conical head with a gradually-decreased outer diameter. One end of the second rod body is inserted into the inserting hole in a sliding mode so that the second rod body can telescopically move between the contracting position and the stretching position, and the end face of the other end of the second rod body is a plane abutting face perpendicular to the axial direction. The device is provided with a limiting structure which is used for locking or unlocking the two rod bodies when the second rod body extends out. The surface of the first rod body is provided with a first scale part and a second scale part, and the surface of the second rod body is provided with a third scale part and a fourth scale part. When the second rod body is located at the extending position, the tail end of the first scale part is aligned with the starting scale of the third scale part to form a first scale line with the top of the conical head as the scale 0; the starting scale of the second scale part is aligned with the tail end of the fourth scale part to form a second scale line with the abutting face as the scale 0, and therefore the second scale line is used for measuring the total depth and the water depth.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydraulic engineering measurement, more particularly to a device for measuring the depth of silt and water depth in a ditch. BACKGROUND

[0002] In the construction and maintenance of ditches, it is necessary to obtain the data of water depth and silt depth simultaneously. In the prior art, when using a single measuring tool such as a common water level gauge, its structure is often difficult to adapt to the two different measurement requirements of water and silt, resulting in deviation in the measurement results of water depth or silt depth. If special tools are used for separate measurement, there are problems of too many devices, cumbersome operation and low efficiency. Therefore, the measuring device in the prior art is difficult to balance between measurement accuracy and operational convenience. SUMMARY

[0003] The purpose of the present application is to provide a silt and water depth measuring device for ditches, which can better balance the measurement accuracy and operational convenience.

[0004] The overall technical solution of the present application is as follows.

[0005] The present application is formed based on the problem that the measuring device in the prior art is difficult to balance between measurement accuracy and operational convenience, and specifically:

[0006] If special tools are used for separate measurement, there are problems of too many devices, cumbersome operation and low efficiency. Therefore, in order to improve the operational convenience, a measuring device is needed to measure the water depth and silt depth simultaneously. However, when using a single measuring tool, its structure is often difficult to adapt to the two different measurement requirements of water and silt. To be specific, when the end of the measuring device is set as a sharp cone, it can more easily penetrate the silt to the hard bottom layer at the bottom to measure the silt thickness, but it cannot be well positioned on the silt surface to accurately measure the water depth (easily sink). When the end of the measuring device is set as a flat surface, it can be better positioned on the silt surface to measure the water depth, but it cannot well penetrate the silt to the hard bottom layer at the bottom.

[0007] Based on this, the present application proposes a silt and water depth measuring device for ditches, which comprises:

[0008] A first rod body has an insertion hole extending in the axial direction at one end;

[0009] A second rod body is slidably inserted into the insertion hole, so that in the axial direction, the second rod body can be telescopically moved between a retracted position and an extended position;

[0010] The limiting structure is configured to make the two rod bodies in a relatively fixed locked state or an unlocked state capable of being retracted and moved when the second rod body is in the extended position.

[0011] The other end of the first rod body is provided with a tapered head protruding outward in the axial direction, and the outer diameter of the tapered head gradually decreases outward.

[0012] The end face of the other end of the second rod body is an abutting face, which is a plane perpendicular to the axial direction.

[0013] The surface of the first rod body is respectively provided with a first scale part and a second scale part.

[0014] The surface of the second rod body is respectively provided with a third scale part and a fourth scale part.

[0015] When the second rod body is in the extended position:

[0016] The tail end scale of the first scale part and the initial scale of the third scale part are aligned to jointly form a first scale line extending in the axial direction, and the top of the tapered head protrusion is taken as the 0 scale.

[0017] The initial scale of the second scale part and the tail end scale of the fourth scale part are aligned to jointly form a second scale line extending in the axial direction, and the abutting face is taken as the 0 scale.

[0018] In the above scheme, when the water depth needs to be measured, the planar abutting face can be more stably abutted on the silt surface layer of the water bottom to reduce the subsidence amplitude, and the water depth reading is taken through the second scale line; when the silt depth needs to be measured, the tapered head can more easily penetrate the silt to reach the hard bottom layer, and the reading is taken through the first scale line to obtain the total depth reading of the water depth plus the silt, and then the water depth reading is subtracted to clearly determine the silt depth. The ditch silt water depth measuring device can better balance the measurement accuracy and operation convenience with one device.

[0019] In some embodiments, the second rod body is provided with a mounting hole, and the limiting structure comprises:

[0020] Two first rod body insertion holes, each of which penetrates the two side walls of the insertion hole;

[0021] Two second rod body insertion holes, each of which penetrates the two side walls of the mounting hole, and each of which is aligned with the two first rod body insertion holes when the second rod body is in the extended position;

[0022] The elastic buckle strip is bent and deformed to be clamped in the mounting hole to form a first clamping arm and a second clamping arm, and each of the two clamping arms has a clamping block corresponding to the insertion into one of the second rod body insertion holes.

[0023] When the second rod body is in the extended position:

[0024] The clamping block is inserted into the first rod body insertion hole through the second rod body insertion hole under the elastic pushing of the buckle strip, so that the two rod bodies are in a locked state;

[0025] The buckle strip is pressed to elastically deform the clamping block out of the first rod body insertion hole, so that the two rod bodies are in an unlocked state.

[0026] The above scheme can realize the tensile positioning of the first rod body and the second rod body into a fixed state for measurement, but is prone to unstable movement and incorrect alignment of the scale line.

[0027] Therefore, as a preferred, in some embodiments, the second rod body comprises:

[0028] A sleeve is inserted into the insertion hole and is slidingly connected to the first rod body to enable axial extension and retraction relative to the first rod body;

[0029] A rotating shaft is inserted into the sleeve and is movably connected to the sleeve to enable self-rotation relative to the sleeve and to drive the sleeve to move axially;

[0030] One end of the rotating shaft passes through the sleeve and is accommodated in the insertion hole to form a connecting section;

[0031] The other end of the rotating shaft passes through the sleeve and is accommodated outside the first rod body to form a control section for holding by hand;

[0032] The end surface of the control section forms an abutting surface, and the third scale part and the fourth scale part are arranged on the surface of the sleeve;

[0033] Further, the limiting structure comprises:

[0034] An external thread of the rotating shaft is arranged on the outer periphery of the connecting section;

[0035] A first internal thread is arranged on the side wall of the insertion hole;

[0036] The external thread of the rotating shaft and the first internal thread are configured to be in alignment and engagement when the second rod body is in the extended position.

[0037] In the above scheme, through the sleeve-rotating shaft assembly structure, the axial directional movement arrangement of the sleeve provided with the scale part, and the structural design of the thread engagement, the driving function (rotation of the rotating shaft) and the scale bearing function (translation of the sleeve) are separated, so that the sleeve bearing the scale only moves axially without rotating during the extension and retraction, thereby ensuring the constant orientation of the scale, and enabling the scale part on the first rod body and the scale part on the second rod body to be more accurately and stably aligned, and optimizing the accuracy of measurement.

[0038] Further, in some embodiments, the side wall of the insertion hole has a slot opening towards the insertion hole and extending in the axial direction;

[0039] The outer surface of the sleeve has an outwardly protruding sliding strip;

[0040] The sliding slot has two, respectively arranged in the two side walls of the insertion hole;

[0041] The sliding strip is also provided with two, each sliding strip is slidably embedded in one sliding slot, so that the sleeve is slidably connected to the first rod body.

[0042] The sliding fit structure of two sliding slots and two sliding strips improves the stability of the sleeve installation and movement, further enables the scale part on the first rod body and the scale part on the second rod body to be more accurately and stably aligned, and optimizes the accuracy of measurement.

[0043] Further, in some embodiments, the sleeve has an insertion part inserted into the insertion hole when the second rod body is in the extended position;

[0044] The insertion part is fixedly sleeved with a sealing sleeve with elasticity;

[0045] The sealing sleeve is placed between the outer circumference of the insertion part and the inner wall of the insertion hole in a compressed state.

[0046] On the one hand, the sealing sleeve effectively fills the fitting gap between the sleeve and the first rod body through its elastic compression, not only significantly reducing the radial shaking of the sleeve in the moving and locking state, but also enhancing the stability of its axial movement, thereby providing further protection for the accurate and stable alignment of the scale parts on the first rod body and the second rod body in the extended and locked position, and optimizing the accuracy of measurement.

[0047] On the other hand, the sealing structure can prevent external silt, moisture and other impurities from entering the inside of the insertion hole, reduce or even avoid the accumulation of pollutants at the outer thread of the rotating shaft and the first internal thread, better ensure the smoothness and reliability of the threaded engagement connection, and improve the long-term durability of the device in harsh working conditions.

[0048] Further, in some embodiments, the insertion hole has an opening section channel that is in contact with the sealing sleeve and communicates with the opening of the insertion hole when the second rod body is in the extended position;

[0049] In the direction in which the second rod body extends out of the insertion hole, the caliber of the opening section channel gradually decreases.

[0050] The channel contacting the insertion hole and the sealing sleeve is designed as a taper (caliber gradually decreases), so that when the sleeve extends outward, the sealing sleeve is radially extruded by the tapered channel, the contact pressure increases, forming a tighter seal and maintaining and enhancing the sealing performance.

[0051] Further, in some embodiments, one end of the sealing sleeve extends with an extension part sleeved on the sleeve and outwardly extending from the insertion hole when the second rod body is in the extended position;

[0052] In the direction in which the second rod body extends into the insertion hole, the outer diameter of the end of the extension part gradually decreases to form a guide surface extending obliquely on the outer surface of the extension part;

[0053] When the second rod body is in the extended position, the guide surface is spaced apart from the first rod body in the axial direction.

[0054] By providing the extension part with the oblique guide surface, when the rod body is retracted, the water and the silt on the top can be better guided to separate from the sleeve, and the silt is not accumulated along the end surface of the first rod body or forced to squeeze to the opening edge of the insertion hole.

[0055] Further, the guide surface is spaced apart from the first rod body, so that when the silt is guided to separate by the guide surface, the silt can be guided outward, rather than being accumulated along the end surface of the first rod body or forced to squeeze to the opening edge of the insertion hole, thereby greatly reducing the risk of the silt being carried in the opposite direction or seeping into the inside of the insertion hole during retraction, and further optimizing the anti-pollution capability and long-term use reliability of the device.

[0056] In some embodiments, the side wall of the insertion hole is further provided with a second internal thread configured to be in engagement with the external thread of the rotating shaft when the second rod body is in the retracted position.

[0057] By providing the second internal thread to be in engagement with the external thread of the rotating shaft when the second rod body is in the retracted position, a second stable locking point is provided for the device, so that the second rod body is more stable when it is in the retracted position in the first rod body, facilitating carrying and storage, and improving the practicality and convenience of the device.

[0058] In some embodiments, the cone head is detachably fixed to the first rod body.

[0059] By detachable connection, the worn or damaged cone head can be replaced, the maintenance cost is reduced, the service life of the main rod body is prolonged, and the maintainability of the device is improved.

[0060] Further, in some embodiments, the insertion hole is a through hole provided in the axial direction, and one end of the through hole is open for insertion of the second rod body;

[0061] The other end of the insertion hole is covered by the cone head from the outside, and the cone head has an insertion part which is inserted into the insertion hole through the other end opening, and the outer periphery of the insertion part has a cone head external thread;

[0062] The second internal thread has a part extending to be in alignment with the external thread of the taper head, and the part is in meshing connection with the external thread of the taper head, so that the taper head is detachably fixed to the first rod body.

[0063] In one aspect, the insertion hole is a through hole, facilitating flushing of the internal structure of the insertion hole, so that the device has higher cleanability and facilitates long-term use of the device in a silt measuring environment.

[0064] In another aspect, the second internal thread is functionally integrated (both capable of being in positioning meshing with the second rod body and capable of being in meshing connection with the taper head), so that the overall structure is more compact and convenient for production and processing (only one machining of the second internal thread is needed to meet the fixing requirements of the two components).

[0065] The main beneficial effects of the above technical solution are:

[0066] 1. By providing the first rod body with the taper head and the second rod body with the planar abutting surface, and making them in telescopic cooperation, while configuring a special scale system capable of being aligned to form two independent scale lines in the extended state, a silt water depth measuring device for a trench is formed, which can better balance the measurement accuracy and operational convenience.

[0067] 2. The second rod body is formed by the cooperation of the sleeve and the shaft, and is adapted to form a limiting structure, so that the scale part on the first rod body and the scale part on the second rod body can be more accurately and stably aligned, optimizing the measurement accuracy.

[0068] 3. By providing a sealing sleeve and further optimizing the structure of the sealing sleeve according to the characteristics of the silt measuring environment, the scale part on the first rod body and the scale part on the second rod body can be more accurately and stably aligned, optimizing the measurement accuracy; and the smoothness and reliability of the threaded pair meshing connection are better ensured, improving the long-term durability of the device in harsh working conditions.

[0069] 4. The second internal thread is provided, and the detachable connection structure of the taper head is optimized by matching the second internal thread, so that the device has higher cleanability, facilitating long-term use of the device in a silt measuring environment; and the overall structure is more compact and convenient for production and processing. BRIEF DESCRIPTION OF DRAWINGS

[0070] The application will be further described below with reference to the accompanying drawings.

[0071] Figure 1 It is a schematic view of a silt water depth measuring device for a trench.

[0072] Figure 2 It is a schematic view of a limiting structure.

[0073] Figure 3 This is a schematic diagram of another type of silt depth measuring device for ditches.

[0074] Figure 4 This is a cross-sectional schematic diagram of another type of silt depth measuring device for ditches.

[0075] Figure 5 for Figure 4 An enlarged schematic diagram of part A in the middle.

[0076] Figure 6 This is a schematic diagram of the installation structure of the sealing sleeve.

[0077] Figure 7 for Figure 4 Enlarged diagram of part B. Detailed Implementation

[0078] The present invention will now be illustrated with specific examples of embodiments.

[0079] Example 1:

[0080] A silt depth measuring device for ditches is used to measure the water depth and silt depth in ditches.

[0081] like Figure 1 As shown, it includes a vertically extending first rod 1, the upper end of which has an upward-opening insertion hole 1.1, which extends along the axial direction of the first rod 1.

[0082] A second rod 2 is inserted into the insertion hole 1.1. The lower end of the second rod 2 is slidably inserted into the insertion hole 1.1, so that the second rod 2 can move telescopically between the retracted position and the extended position in the axial direction of the first rod 1.

[0083] The contraction position refers to the position of the second rod 2 relative to the first rod 1 when the lower end of the second rod 2 is inserted into the insertion hole 1.1 at its maximum stroke.

[0084] The extended position refers to the position of the second rod 2 relative to the first rod 1 when the upper end of the second rod 2 extends out of the insertion hole 1.1 at its maximum stroke.

[0085] Furthermore, a limiting structure is provided between the first rod 1 and the second rod 2. This limiting structure is configured such that when the second rod 2 is in the extended position, the two rods are in a relatively fixed locked state or an unlocked state that can retract and move.

[0086] Specifically, such as Figure 2 As shown, the lower end of the second rod 2 is provided with a mounting hole 2.3. The limiting structure includes: a first rod insertion hole 1.4, a second rod insertion hole 2.5, and a fastener 4.

[0087] The device includes two first rod insertion holes 1.4, each penetrating one of the two side walls of the insertion hole 1.1. To accommodate the first rod insertion holes 1.4, two second rod insertion holes 2.5 are also provided, each penetrating one of the two side walls of the mounting hole 2.3. When the second rod 2 is in the extended position, the two second rod insertion holes 2.5 are aligned with the two first rod insertion holes 1.4.

[0088] The fastener 4 is a strip-shaped component made of an elastic material, such as elastic plastic or metal; the fastener 4 is as follows: Figure 2 As shown, the device is bent and deformed and fitted into the mounting hole 2.3 to form a first locking arm 4.1 that conforms to one side wall of the insertion hole 2.5, and a second locking arm 4.2 that conforms to the other side wall of the insertion hole 2.5. Each of the two locking arms has a corresponding locking block that is inserted into a second rod insertion hole 2.5.

[0089] like Figure 2 As shown, the first locking arm 4.1 has a protruding first locking block 4.3, and the second locking arm 4.2 has a protruding second locking block 4.4.

[0090] When Figure 2 As shown, when the second rod 2 is in the extended position:

[0091] Under the elastic force of the buckle 4, the first locking block 4.3 passes through a second rod insertion hole 2.5 and is inserted into a first rod insertion hole 1.4 that is aligned with the second rod insertion hole 2.5.

[0092] Under the elastic force of the buckle 4, the second locking block 4.4 passes through another second rod insertion hole 2.5 and is inserted into another first rod insertion hole 1.4 that is aligned with the second rod insertion hole 2.5.

[0093] The first rod 1 is fixed relative to the second rod 2 and cannot be extended or retracted, so that the two rods are in a locked state.

[0094] At this point, the inward pressing of the locking block further presses the buckle 4, causing it to elastically deform until: the first locking block 4.3 disengages from one first rod insertion hole 1.4, and the second locking block 4.4 disengages from the other first rod insertion hole 1.4. The first rod 1 can then extend and retract relative to the second rod 2, so that both rods are in an unlocked state.

[0095] like Figure 1As shown, the lower end of the first rod 1 is provided with a cone 3 that protrudes downward along the axial direction. This cone 3 is non-removably fixed to the lower end of the first rod 1, or it can be detachably fixed to the lower end of the first rod 1 using, for example, a threaded structure or a screw. In the downward axial direction, the outer radial direction of the cone 3 gradually decreases outward, so that the cone 3 forms a cone structure with its tip pointing downwards. This cone 3 is used to insert into silt. Furthermore, the outer surface of the cone 3 may be provided with anti-slip textures.

[0096] Moreover, such as Figure 1 As shown, the upper end face of the second rod 2 is the abutment surface 2.4, which is a plane perpendicular to the axial direction. The abutment surface 2.4 is used to adhere and contact with the surface layer of silt at the bottom of the water.

[0097] like Figure 1 As shown, the surface of the first rod 1 is provided with a first scale portion 1.2 and a second scale portion 1.3. The surface of the second rod 2 is provided with a third scale portion 2.1 and a fourth scale portion 2.2. For example, the scale markings on a ruler include spaced-apart length marking lines, numerical labels for each length marking line, and units.

[0098] The length marking lines of the first scale section 1.2, the second scale section 1.3, the third scale section 2.1 and the fourth scale section 2.2 are all arranged at intervals along the axial direction of the first rod body 1.

[0099] Furthermore, when the second rod 2 is in the extended position:

[0100] The tail scale of the first scale section 1.2 and the starting scale of the third scale section 2.1 are aligned to jointly form a first scale line extending axially, with the top of the cone 3 protruding as the 0 mark. At this time, the ditch silt water depth measuring device with the first scale line forms a measuring ruler with the top of the cone 3 as the 0 mark and the readings increasing sequentially upwards.

[0101] The starting scale of the second scale section 1.3 and the tail scale of the fourth scale section 2.2 are aligned to jointly form a second scale line extending axially, with the contact surface 2.4 serving as the 0 mark. The ditch silt depth measuring device with the second scale line is formed with a measuring ruler where the contact surface 2.4 serves as the 0 mark and the readings increase sequentially downwards.

[0102] When using:

[0103] Pull the second rod 2 upwards until it is in the extended position.

[0104] At this point, under the elastic force of the buckle 4, the two locking blocks pass through a second rod insertion hole 2.5 and are inserted into a first rod insertion hole 1.4, locking the two rods in place. Rod positioning is complete.

[0105] Subsequently, as Figure 1 The ditch depth measuring device shown is flipped upside down, with the contact surface 2.4 facing down and inserted into the water, touching the surface of the silt at the bottom. The water depth can then be read through the second scale line.

[0106] Then, the ditch was pulled out of the water using a silt depth measuring device and turned upside down until it was like... Figure 1 As shown, the cone 3 is inserted into the water and passes through the silt at the bottom to abut against the hard layer at the bottom of the silt. The total depth of the silt and water is read through the first scale line.

[0107] The silt depth is the total depth minus the water depth.

[0108] Furthermore, the second rod 2 can also be a telescopic rod, which includes a second rod A with its lower end inserted into the insertion hole 1.1, and a second rod B with its upper end inserted into the second rod A. The second rod A and the second rod B are also provided with the limiting structure described above, so that when the second rod B extends out of the second rod A, the second rod A and the second rod B are in a relatively fixed locked state or an unlocked state that can retract and move.

[0109] Example 2:

[0110] A silt depth measuring device for ditches is used to measure the water depth and silt depth in ditches.

[0111] like Figure 3 As shown, it includes a vertically extending first rod 1, the upper end of which has an upward-opening insertion hole 1.1, which extends along the axial direction of the first rod 1.

[0112] A second rod 2 is inserted into the insertion hole 1.1. The lower end of the second rod 2 is slidably inserted into the insertion hole 1.1, so that the second rod 2 can move telescopically between the retracted position and the extended position in the axial direction of the first rod 1.

[0113] The contraction position refers to the position of the second rod 2 relative to the first rod 1 when the lower end of the second rod 2 is inserted into the insertion hole 1.1 at its maximum stroke.

[0114] The extended position refers to the position of the second rod 2 relative to the first rod 1 when the upper end of the second rod 2 extends out of the insertion hole 1.1 at its maximum stroke.

[0115] Furthermore, a limiting structure is provided between the first rod 1 and the second rod 2. This limiting structure is configured such that when the second rod 2 is in the extended position, the two rods are in a relatively fixed locked state or an unlocked state that can retract and move.

[0116] Among them, such asFigures 4 to 5 As shown, the second rod 2 includes a sleeve 2a and a rotating shaft 2b inserted into the sleeve 2a.

[0117] The sleeve 2a is inserted into the insertion hole 1.1 and slidably connected to the first rod 1 so that it can move telescopically relative to the first rod 1 in the axial direction.

[0118] like Figure 5 As shown, the sidewall of the insertion hole 1.1 has a sliding groove 1.5 with its opening facing the insertion hole 1.1 and extending axially in the first rod body 1. The outer surface of the sleeve 2a has an outwardly protruding slide bar 2a.1. There are two sliding grooves 1.5, respectively disposed on the two sidewalls of the insertion hole 1.1; to adapt to the arrangement of the sliding grooves 1.5, there are also two slide bars 2a.1, each slide bar 2a.1 being slidably embedded in a sliding groove 1.5, so that the sleeve 2a is slidably connected to the first rod body 1. By limiting the length of the sliding groove 1.5 extending axially in the first rod body 1, the specific positions of the retracted position and the extended position can be controlled.

[0119] The rotating shaft 2b, which is inserted into the sleeve 2a, is movably connected to the sleeve 2a so that it can rotate relative to the sleeve 2a and drive the sleeve 2a to move axially.

[0120] like Figures 4 to 5 As shown, the rotating shaft 2b is inserted into the sleeve 2a and can rotate around the axis of the first rod 1; and the lower end of the rotating shaft 2b extends out of the sleeve 2a and is accommodated in the insertion hole 1.1 to form a connecting section 2b.1. The upper end of the rotating shaft 2b extends out of the sleeve 2a and is placed outside the first rod 1 to form a control section 2b.2 for hand gripping.

[0121] The outer periphery of the connecting section 2b.1 has a protrusion and a lower outer edge positioned below the sleeve 2a; the outer periphery of the control section 2b.2 has a protrusion and an upper outer edge positioned above the sleeve 2a. Under the limitation of the lower and upper outer edges, the rotating shaft 2b can drive the sleeve 2a to move axially in the first rod 1.

[0122] like Figure 5 As shown, the limiting structure includes an external thread 2b.11 of the shaft disposed on the outer periphery of the connecting section 2b.1, and a first internal thread 1.11 disposed on the side wall of the insertion hole 1.1.

[0123] The first internal thread 1.11 is set according to the position of the external thread 2b.11 of the shaft when the second rod 2 is in the extended position, and the external thread 2b.11 of the shaft and the first internal thread 1.11 can be aligned and engaged when the second rod 2 is in the extended position.

[0124] At this time, by rotating the shaft 2b in the forward direction, the external thread 2b.11 of the shaft and the first internal thread 1.11 are engaged and connected, so that the first rod 1 is fixed relative to the second rod 2 and cannot be extended or retracted, so that the two rods are in a locked state.

[0125] By reversing the rotation shaft 2b, the external thread 2b.11 of the rotation shaft and the first internal thread 1.11 are disengaged, and the first rod 1 can then extend and retract relative to the second rod 2, so that the two rods are in an unlocked state.

[0126] like Figure 3 As shown, the lower end of the first rod 1 is provided with a cone 3 that protrudes axially downwards. This cone 3 is detachably fixed to the lower end of the first rod 1 using, for example, a threaded structure or a screw. In the axially downward direction, the outer radial direction of the cone 3 gradually decreases outwards, so that the cone 3 forms a cone structure with its tip pointing downwards. This cone 3 is used to insert into the silt. Furthermore, the outer surface of the cone 3 may be provided with anti-slip textures.

[0127] Moreover, such as Figure 3 As shown, the end face of the protruding end of the control section 2b.2 forms an abutment surface 2.4, which is a plane perpendicular to the axial direction. The abutment surface 2.4 is used to adhere and contact with the surface layer of silt at the bottom of the water.

[0128] The upper end face of the second rod 2 is the contact surface 2.4.

[0129] like Figure 3 As shown, the surface of the first rod 1 is provided with a first scale portion 1.2 and a second scale portion 1.3. The surface of the sleeve 2a is provided with a third scale portion 2.1 and a fourth scale portion 2.2. For example, the scale markings on a ruler include spaced-apart length marking lines, numerical labels for each length marking line, and units.

[0130] The length marking lines of the first scale section 1.2, the second scale section 1.3, the third scale section 2.1 and the fourth scale section 2.2 are all arranged at intervals along the axial direction of the first rod body 1.

[0131] Furthermore, when the second rod 2 is in the extended position:

[0132] The tail scale of the first scale section 1.2 and the starting scale of the third scale section 2.1 are aligned to jointly form a first scale line extending axially, with the top of the cone 3 protruding as the 0 mark. At this time, the ditch silt water depth measuring device with the first scale line forms a measuring ruler with the top of the cone 3 as the 0 mark and the readings increasing sequentially upwards.

[0133] The starting scale of the second scale section 1.3 and the tail scale of the fourth scale section 2.2 are aligned to jointly form a second scale line extending axially, with the contact surface 2.4 serving as the 0 mark. The ditch silt depth measuring device with the second scale line is formed with a measuring ruler where the contact surface 2.4 serves as the 0 mark and the readings increase sequentially downwards.

[0134] like Figure 5 As shown, the sleeve 2a has an insertion portion that is inserted into the insertion hole 1.1 when the second rod 2 is in the extended position; a sealing sleeve 5 is fixed to the insertion portion by means of, for example, glue or an insert structure. The sealing sleeve 5 is made of an elastic material such as rubber or silicone and is located on the outer periphery of the sleeve 2a; and the sealing sleeve 5 is compressed and placed between the outer periphery of the insertion portion and the inner wall of the insertion hole 1.1 to form a sealing structure between the outer periphery of the sleeve 2a and the inner wall of the insertion hole 1.1.

[0135] like Figure 5 As shown, the upper end of the insertion hole 1.1 has an open section. When the second rod 2 is in the extended position, this open section fits against the sealing sleeve 5 and communicates with the opening of the insertion hole 1.1. In the direction in which the second rod 2 extends out of the insertion hole 1.1 ( Figure 3 (From bottom to top) The diameter of the opening gradually decreases in this section of the channel.

[0136] like Figure 6 As shown, the upper end of the sealing sleeve 5 extends into a protruding portion 5.1, which is fitted onto the sleeve 2a and extends outward into the insertion hole 1.1 when the second rod 2 is in the extended position.

[0137] In the direction in which the second rod 2 extends out of the insertion hole 1.1 ( Figure 3 (From bottom to top), the outer diameter of the protruding end of the protruding portion 5.1 gradually decreases, so that a guide surface 5.2 extending at an inclined direction is formed on the outer surface of the protruding portion;

[0138] When the second rod 2 is in the extended position, the lower end of the guide surface 5.2 is spaced apart from the first rod 1 in the axial direction.

[0139] Furthermore, such as Figure 7 As shown, the side wall of the insertion hole 1.1 is also provided with a second internal thread 1.12. The second internal thread 1.12 is adapted to the position of the external thread 2b.11 of the shaft when the second rod 2 is in the retracted position. And when the second rod 2 is in the retracted position, the second internal thread 1.12 can be aligned and engaged with the external thread 2b.11 of the shaft.

[0140] At this time, by rotating the shaft 2b in the forward direction, the external thread 2b.11 and the second internal thread 1.12 of the shaft are engaged and connected, so that the first rod 1 is fixed relative to the second rod 2 and cannot be extended or retracted.

[0141] By reversing the rotation shaft 2b, the external thread 2b.11 and the second internal thread 1.12 of the rotation shaft are disengaged, and the first rod 1 can move telescopically relative to the second rod 2, and the second rod 2 can extend to the extended position.

[0142] like Figure 7 As shown, the insertion hole 1.1 is a through hole that extends axially, with its upper end open for the insertion of the second rod 2 and its lower end open for the insertion of the cone head 3.

[0143] Specifically, such as Figure 7 As shown, the cone 3 covers the lower opening of the insertion hole 1.1 from the outside, and the cone 3 has an insertion part 3.1, which passes through the other end opening to be inserted into the insertion hole 1.1, and the outer periphery of the insertion part 3.1 has a cone external thread 3.2.

[0144] The second internal thread 1.12 has a portion that extends to align with the external thread 3.2 of the cone head, which engages with the external thread 3.2 of the cone head to allow the cone head 3 to be detachably fixed to the first rod body 1.

[0145] By rotating the cone 3 in the forward direction, the external thread 3.2 of the cone 3 engages with the lower part of the second internal thread 1.12, thus fixing the cone 3 to the first rod body 1.

[0146] By twisting the cone head 3 in the reverse direction, the lower part of the external thread 3.2 of the cone head is disengaged from the second internal thread 1.12, and the cone head 3 can be disassembled.

[0147] When using:

[0148] Pull the second rod 2 upwards until it is in the extended position.

[0149] During this process, the control section 2b.2 is gripped and screwed in a forward direction to rotate the shaft 2b, causing the external thread 2b.11 of the shaft to engage with the first internal thread 1.11. This fixes the first rod 1 relative to the second rod 2, preventing it from extending or retracting, thus locking the two rods in a locked state. The rod positioning is then complete.

[0150] Subsequently, as Figure 3 The ditch depth measuring device shown is flipped upside down, with the contact surface 2.4 facing down and inserted into the water, touching the surface of the silt at the bottom. The water depth can then be read through the second scale line.

[0151] Then, the ditch was pulled out of the water using a silt depth measuring device and turned upside down until it was like...Figure 3 As shown, the cone 3 is inserted into the water and passes through the silt at the bottom to abut against the hard layer at the bottom of the silt. The total depth of the silt and water is read through the first scale line.

[0152] The silt depth is the total depth minus the water depth.

[0153] Subsequently, by reversing the rotation shaft 2b, the first rod 1 can be partially retracted into the second rod 2, completing the storage. During this process, the control section 2b.2 can be held and force applied to rotate it. By rotating the rotation shaft 2b in the forward direction, the external thread 2b.11 and the second internal thread 1.12 of the rotation shaft can be engaged and connected, achieving fixed storage between the first rod 1 and the second rod 2.

[0154] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the invention. Furthermore, the terms "vertical," "horizontal," "front," and "rear," etc., mentioned in the embodiments of the present invention indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the device is in use. These are merely for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. It should be further noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" in the description should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0155] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A device for measuring the depth of silt water in a trench, characterized by, The utility model relates to a telescopic rod structure, comprising: a first rod body having an insertion hole extending in an axial direction at one end thereof; a second rod body slidably inserted into the insertion hole so as to be telescopically movable in an axial direction between a retracted position and an extended position; a limiting structure configured to allow the two rod bodies to be in a relatively fixed locked state or a telescopically movable unlocked state when the second rod body is in the extended position; wherein the other end of the first rod body is provided with a tapered head protruding outward in an axial direction, the tapered head having an outer diameter gradually decreasing outward; the end surface of the other end of the second rod body is an abutting surface which is a plane perpendicular to the axial direction; the surface of the first rod body is respectively provided with a first scale part and a second scale part; the surface of the second rod body is respectively provided with a third scale part and a fourth scale part; when the second rod body is in the extended position: the tail end scale of the first scale part and the initial scale of the third scale part are aligned to jointly form a first scale line extending in the axial direction and taking the top of the tapered head as the 0 scale; the initial scale of the second scale part and the tail end scale of the fourth scale part are aligned to jointly form a second scale line extending in the axial direction and taking the abutting surface as the 0 scale.

2. The silt depth measuring device for a trench according to claim 1, wherein: the one end of the second rod body is provided with a mounting hole, and the limiting structure comprises: two first rod body insertion holes respectively penetrating the two side walls of the insertion hole; two second rod body insertion holes respectively penetrating the two side walls of the mounting hole and capable of being respectively aligned with the two first rod body insertion holes when the second rod body is in the extended position; a clamping strip with elasticity which is bent and clamped in the mounting hole to form a first clamping arm and a second clamping arm, and the two clamping arms are respectively provided with a clamping block corresponding to the insertion into one of the second rod body insertion holes; when the second rod body is in the extended position: the clamping blocks are inserted into the first rod body insertion holes through the second rod body insertion holes under the elastic pushing of the clamping strip, so that the two rod bodies are in the locked state; the clamping strip is pressed to be elastically deformed to make the clamping blocks disengage from the first rod body insertion holes, so that the two rod bodies are in the unlocked state.

3. The silt depth measuring device for a trench according to claim 1, characterized by: the second rod body comprises: a sleeve inserted into the insertion hole and slidably connected to the first rod body so as to be telescopically movable in an axial direction relative to the first rod body; a rotating shaft inserted into the sleeve and movably connected to the sleeve so as to be rotatable relative to the sleeve and capable of driving the sleeve to move in an axial direction; wherein one end of the rotating shaft penetrates the sleeve and is accommodated in the insertion hole to form a connecting section; the other end of the rotating shaft penetrates the sleeve and is accommodated outside the first rod body to form a control section for hand holding; the end surface of the control section forms the abutting surface, and the third scale part and the fourth scale part are arranged on the surface of the sleeve; and the limiting structure comprises: an external thread of the rotating shaft arranged on the outer periphery of the connecting section; a first internal thread arranged on the side wall of the insertion hole; the external thread of the rotating shaft and the first internal thread are configured to be in alignment and engagement when the second rod body is in the extended position.

4. The silt depth measuring device for a trench according to claim 3, characterized by: The side wall of the insertion hole has a sliding groove extending in the axial direction and facing the insertion hole; The outer surface of the sleeve has an outwardly protruding sliding strip; The sliding groove is provided with two sliding grooves respectively arranged on the two side walls of the insertion hole; The sliding strip is also provided with two sliding strips, each of which is slidably embedded in one of the sliding grooves, so that the sleeve is slidably connected to the first rod body.

5. The silt depth measuring device for a trench according to claim 3, characterized by: The sleeve has an insertion portion inserted into the insertion hole when the second rod body is in the extended position; The insertion portion is fixedly sleeved with a sealing sleeve having elasticity; The sealing sleeve is compressed between the outer periphery of the insertion portion and the inner wall of the insertion hole.

6. The silt depth measuring device for a trench according to claim 5, wherein: The insertion hole has an opening section channel that is in contact with the sealing sleeve and communicates with the opening of the insertion hole when the second rod body is in the extended position; The opening section channel gradually decreases in diameter in the direction in which the second rod body extends out of the insertion hole.

7. The silt depth measuring device for a trench according to claim 6, characterized by: One end of the sealing sleeve extends an extension portion sleeved with the sleeve and extending out of the insertion hole when the second rod body is in the extended position; The outer diameter of the end of the extension portion gradually decreases in the direction in which the second rod body extends out of the insertion hole, so that a guide surface extending obliquely is formed on the outer surface of the extension portion; When the second rod body is in the extended position, the guide surface is spaced apart from the first rod body in the axial direction.

8. The silt depth measuring device for a trench according to any one of claims 3 to 7, characterized by: The side wall of the insertion hole is also provided with a second internal thread configured to be in alignment with the external thread of the rotating shaft when the second rod body is in the retracted position.

9. The silt depth measuring device for a trench according to claim 8, characterized by: The tapered head is detachably fixed to the first rod body.

10. The silt depth measuring device for a trench according to claim 9, characterized by: The insertion hole is a through hole provided in the axial direction, one end of which is open for the insertion of the second rod body; The tapered head covers the other end opening of the insertion hole from the outside, and the tapered head has an insertion portion inserted into the insertion hole through the other end opening, and the outer periphery of the insertion portion has a tapered head external thread; The second internal thread has a portion extending to the position aligned with the tapered head external thread, and the portion is in engagement with the tapered head external thread to detachably fix the tapered head to the first rod body.

Images