Groove depth measuring device and groove milling machine

Abstract

The application discloses a kind of mill slot depth measuring device and mill slot machine, it is related to engineering machinery depth measuring technique field, to improve the accurate measurement of the depth of wire rope lowering or lifting.Mill slot depth measuring device includes base, measuring component and cooperation wheel.Base is configured to provide support.Measuring component includes support, measuring wheel, fixedly connected with the rotating shaft of measuring wheel and the measuring element installed on support;Rotating shaft is rotatably installed on support, and support is installed on base.Cooperation wheel is installed on base;There is gap between cooperation wheel and measuring component for accommodating wire rope.The technical scheme provided above provides mill slot depth measuring device, compact structure, by clamping wire rope in the gap between measuring wheel and cooperation wheel, to make wire rope drive measuring wheel rotation, in turn drive rotating shaft rotation.Rotation of rotating shaft is completely driven by wire rope, and the depth of wire rope lowering or lifting can be accurately calculated by the number of rotating circle of rotating shaft.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of depth measurement of engineering machinery, in particular to a trench milling depth measurement device and a trench milling machine. BACKGROUND

[0002] The double-wheel trench milling machine is the most advanced and professional underground continuous wall construction equipment, which is widely used in subway, underground pipeline construction and hydropower station construction.

[0003] The real-time depth of the trench milling machine during underwater construction is very important data, which needs to be monitored and displayed in real time during the work process. On the one hand, it can avoid reworking by not reaching the target depth or causing concrete overboard by exceeding the target depth. On the other hand, if there is an underground project (such as a parking lot, an underground shopping mall, etc.) in the current construction area, the construction depth should be accurately controlled to avoid breaking through.

[0004] The existing technology adopts a winch depth measurement scheme, that is, an encoder is installed on the winch, the winch rotates to drive the encoder to rotate and count, and then the depth of the steel wire rope is calculated according to the current winding diameter.

[0005] In actual operation, the trench milling machine needs to be in a zero-depth position, and the current layer number and winding number of the winch out of the rope point are determined, and then the program is set. As the steel wire rope is lowered, when the steel wire rope wound on the current layer is finished, the program automatically switches the winding radius of the steel wire rope to realize the depth measurement of the multi-layer winding drum.

[0006] The inventor finds that at least the following problems exist in the prior art: The current layer number and winding number of the winch out of the rope point need to be determined manually at zero position, the winding number is usually not an integer, and there is a counting error. In actual operation, the winding number is often counted incorrectly, causing large depth measurement error. When the steel wire rope is irregularly wound on the winch, the program cannot determine when to switch the winding radius, causing measurement error. SUMMARY

[0007] The present application provides a trench milling depth measurement device and a trench milling machine to improve the accurate measurement of the depth of the steel wire rope lowered or lifted.

[0008] The present application provides a trench milling depth measurement device, comprising:

[0009] a base configured to provide support;

[0010] a measurement assembly comprising a support, a measurement wheel, a rotating shaft fixedly connected to the measurement wheel, and a measurement element installed on the support; the rotating shaft is rotatably installed on the support, and the support is installed on the base; and

[0011] A matching wheel is installed on the base; a gap for accommodating a steel wire rope is provided between the matching wheel and the measuring assembly.

[0012] In some embodiments, the support is slidably mounted on the base.

[0013] In some embodiments, the support comprises:

[0014] a first support rotatably connected to one end of the rotating shaft; and

[0015] The second support is rotatably connected to the other end of the rotating shaft.

[0016] In some embodiments, the base comprises:

[0017] A first support plate is provided with a first limiting slide; the measuring assembly further includes a first slider, the first slider is fixedly connected to the first support, and the first slider is installed on the first limiting slide;

[0018] a second support plate, spaced apart from the first support plate; the second support plate is provided with a second limiting slideway, the measuring assembly further comprising a second slider, the second slider being fixedly connected to the second support, and the second slider being mounted on the second limiting slideway; and

[0019] The connecting plate is arranged between the first supporting plate and the second supporting plate to fixedly connect the first supporting plate and the second supporting plate.

[0020] In some embodiments, the connecting plate includes two pieces, and the measuring component is located between the two connecting plates.

[0021] In some embodiments, the milling groove depth measuring device further comprises:

[0022] A tensioning device is installed between the first support and the base, and / or between the second support and the base; the measuring wheel is located on top of the mating wheel; the tensioning device tightens the measuring wheel toward the mating wheel to minimize the gap between the measuring wheel and the mating wheel.

[0023] In some embodiments, the tensioning device includes a spring, one end of the spring is connected to the first support and / or the second support, and the other end of the spring is connected to the base.

[0024] In some embodiments, there are multiple tensioning devices, two tensioning devices are correspondingly provided for the first slider, and two tensioning devices are correspondingly provided for the second slider.

[0025] In some embodiments, the milling groove depth measuring device further comprises:

[0026] A limiting wheel group is installed on the base; the limiting wheel group includes at least two limiting wheels, and there is a gap between the two limiting wheels for accommodating the wire rope; the limiting wheel group is located upstream and / or downstream of the measuring component.

[0027] In some embodiments, the limiting wheel set includes two sets, one set is located upstream of the measuring component, and the other set is located downstream of the measuring component.

[0028] In some embodiments, the measuring element includes an encoder, a housing of the encoder is fixed to the support, and an inner shaft of the encoder is fixed to the rotating shaft.

[0029] An embodiment of the present invention further provides a slot milling machine, comprising the slot milling depth measuring device provided by any technical solution of the present invention.

[0030] The milling groove depth measurement device provided by the above-mentioned technical solution has a compact structure. By clamping a wire rope in the gap between the measuring wheel and the mating wheel, the wire rope drives the measuring wheel to rotate, which in turn drives the rotating shaft to rotate. Because the rotation of the rotating shaft is entirely driven by the wire rope, the depth of the wire rope lowered or raised can be accurately calculated based on the number of rotations of the rotating shaft. Furthermore, the mating wheel and the measuring wheel jointly clamp the wire rope, allowing it to pass only in a straight line, preventing it from tangling or curling. There is no need to calculate the number of wire rope windings and the winding radius on the winch, which greatly reduces inaccuracies in the measurement and further improves the accuracy of the depth of the wire rope lowered or raised. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0032] Figure 1 A schematic diagram of the three-dimensional structure of a milling groove depth measuring device provided in an embodiment of the present invention.

[0033] Figure 2 A schematic diagram of the three-dimensional structure of the base of the milling groove depth measuring device provided in an embodiment of the present invention.

[0034] Figure 3 A three-dimensional cross-sectional view of a milling groove depth measuring device provided in an embodiment of the present invention.

[0035] Figure 4 A schematic diagram of the three-dimensional structure of the measuring component of the milling groove depth measuring device provided in an embodiment of the present invention.

[0036] Reference numerals:

[0037] 1, base; 2, measuring assembly; 3, matching wheel; 4, tensioning device; 5, limiting wheel set; 6, steel wire rope;

[0038] 11, first support plate; 12, second support plate; 13, connecting plate; 15, second ear plate; 111, first limiting slide; 121, second limiting slide;

[0039] 21, support; 22, measuring wheel; 23, rotating shaft; 24, measuring element; 25, first sliding block; 26, second sliding block;

[0040] 211, first support; 212, second support; 213, first ear plate;

[0041] 51, limiting wheel. DETAILED DESCRIPTION

[0042] The technical solutions provided by the present application will be described in more detail below. Figures 1 to 4 The technical solutions provided by the present application will be described in more detail below.

[0043] Referring to Figure 1 The milling slot depth measuring device provided by the embodiment of the present application includes a base 1, a measuring assembly 2, and a matching wheel 3. The base 1 is configured to provide support. The measuring assembly 2 includes a support 21, a measuring wheel 22, a rotating shaft 23, and a measuring element 24. The rotating shaft 23 is fixedly connected with the measuring wheel 22, and the measuring wheel 22 and the rotating shaft 23 do not rotate relative to each other. The measuring element 24 is installed on the support 21. The rotating shaft 23 is rotatably installed on the support 21, and the support 21 is installed on the base 1. The matching wheel 3 is installed on the base 1, and there is a gap between the matching wheel 3 and the measuring assembly 2 for accommodating the steel wire rope. The matching wheel 3 is located below the measuring wheel 22, and functions to prevent the steel wire rope from sagging when it is relaxed, and to ensure that the measuring wheel 22 on the measuring assembly 2 is always pressed against the steel wire rope.

[0044] The measuring wheel 22 can adopt a wheel with small middle size and large size at both ends, and the matching wheel 3 also has a similar structure, so that the concave area formed in the middle of the measuring wheel 22 and the matching wheel 3 together serves as the gap for allowing the steel wire rope to pass through.

[0045] The milling slot depth measuring device is used on a milling slot machine. The steel wire rope of the milling slot machine passes through the milling slot depth measuring device. As the steel wire rope rises and falls, the measuring wheel 22 is driven by the steel wire rope to rotate, which makes the rotating shaft 23 rotate synchronously with the measuring wheel 22. The measuring element 24 is used to test the number of rotations of the rotating shaft 23. The rotating shaft 23 is completely driven by the steel wire rope to rotate. When the rotating shaft 23 rotates one revolution, the length of the steel wire rope passing through is exactly the circumference of the rotating shaft 23. Through the number of rotations of the rotating shaft 23, the distance moved by the steel wire rope can be calculated, and then the depth of the steel wire rope lowered or lifted can be calculated.

[0046] See also Figure 1 , the base 1 can be implemented in many ways. In some embodiments, the base 1 includes a first support plate 11, a second support plate 12 and a connecting plate 13. The first support plate 11 and the second support plate 12 are arranged in parallel and at intervals, and the measuring wheel 22 and the limiting wheel group 5 described later are located between the first support plate 11 and the second support plate 12. The structures of the first support plate 11 and the second support plate 12 are symmetrical relative to the center line of their own width direction. One of the edges of the first support plate 11 is bent outward, and a connecting hole is formed in the bent portion for fixing the first support plate 11 to other components. One of the edges of the second support plate 12 is also bent outward, and a connecting hole is also formed in the bent portion for fixing the second support plate 12 to other components. The bent portion of the first support plate 11 and the bent plates of the second support plate 12 are far away from each other.

[0047] One end of the rotating shaft 23 is supported by the first support plate 11, and the other end is supported by the second support plate 12. This structure eliminates the need for a cantilevered structure, ensuring support at both ends. This allows the rotating shaft 23 to rotate stably. Furthermore, the base 1 with this structure forms a semi-enclosed structure, with the wire rope passing through it. This not only blocks external obstacles but also protects the wire rope, preventing it from swaying under external interference.

[0048] Continue to see Figure 1 and Figure 2 A first limiting slideway 111 is provided at the middle position of the first support plate 11 in the longitudinal direction L. The first limiting slideway 111 comprises two first chute openings facing each other, which together form a semi-enclosed structure around the first slider 25. This structure ensures that the movement of the first slider 25 is very stable. The longitudinal direction here refers to the length of the wire rope after it passes through the milling groove depth measuring device.

[0049] Similarly, a second limiting slide 121 is provided in the middle of the length direction of the second support plate 12. The first limiting slide 111 includes two second slide grooves with openings facing each other, which together form a semi-enclosed structure for the first slider 25. This structure makes the movement of the first slider 25 very stable.

[0050] The connecting plate 13 is disposed between the first support plate 11 and the second support plate 12 to securely connect the first support plate 11 and the second support plate 12. In some embodiments, the connecting plate 13 has an H-shaped structure and securely connects the first support plate 11 and the second support plate 12.

[0051] In some embodiments, the connecting plate 13 includes two pieces, and the measuring component 2 is located between the two connecting plates 13 .

[0052] In some embodiments, the steel wire rope located between the two connecting plates 13 is basically straight and has no bends. Under the joint clamping action of the measuring wheel 22, the mating wheel 3, and the limiting wheel 51, this section of steel wire rope will basically not be entangled or bent, which increases the accuracy of measuring the depth of lowering or lifting the steel wire rope.

[0053] In some embodiments, the support 21 is slidably mounted on the base 1 .

[0054] In some embodiments, the support 21 includes a first support 211 and a second support 212. The first support 211 is rotatably connected to one end of the rotating shaft 23. The second support 212 is rotatably connected to the other end of the rotating shaft 23. The first support 211 is located on a side of the first support plate 11 away from the second support plate 12, and the second support 212 is located on a side of the second support plate 12 away from the first support plate 11.

[0055] See also Figure 4 A first slider 25 is mounted on the first support 211. The first slider 25 has protrusions at both ends to facilitate engagement with the two first chutes 1111 of the first limiting slideway 111. To ensure more stable vertical movement of the first support 211, two first sliders 25 are provided. These two first sliders 25 are arranged vertically, each half-surrounded by two first chutes 1111. These first sliders 25 are located at different positions on the first limiting slideway 111.

[0056] See also Figure 4 A second slider 26 is mounted on the second support 212. The two ends of the slider 26 have projections that facilitate engagement with the two second chutes 1211 of the second position-limiting slideway 121. To ensure more stable vertical movement of the second support 212, two second sliders 26 are provided. These two sliders 26 are arranged vertically, each half-surrounded by two second chutes 1211. These sliders 26 are located at different positions on the second position-limiting slideway 121.

[0057] The first support 211 and the second support 212 are located outside the base 1. This structure makes the installation of the first support 211 and the second support 212 more convenient, and also makes it easy to subsequently install the tensioning device 4 introduced later on the first support 211 and the second support 212.

[0058] See also Figure 1 In some embodiments, the milling depth measuring device further includes a tensioning device 4, which is installed between the first support 211 and the base 1, and / or between the second support 212 and the base 1; the measuring wheel 22 is located on top of the mating wheel 3; the tensioning device 4 tightens the measuring wheel 22 toward the mating wheel 3 to minimize the gap between the measuring wheel 22 and the mating wheel 3.

[0059] In some embodiments, the tensioning device 4 comprises a spring, one end of the spring is hung with the first support 211 and / or the second support 212, and the other end of the spring is hung with the base 1.

[0060] In some embodiments, the number of tensioning devices 4 is multiple, two tensioning devices 4 are correspondingly arranged on the first sliding block 25, and two tensioning devices 4 are correspondingly arranged on the second sliding block 26.

[0061] The tensioning device 4 specifically adopts a spring, the number of springs is four, and each end of the length direction of the first support 211 is provided with a first lug plate 213. The base 1 is correspondingly provided with two second lug plates 15. One spring is hung between each first lug plate 213 and second lug plate 15. Each first support 211 is connected with two springs. The second support 212 is also connected with the other two springs in the same way.

[0062] In operation, the spring is in a stretched state, and the spring elastic force drives the measuring wheel 22 to be always pressed on the steel wire rope through the first support 211 and the second support 212. When the diameter of the steel wire rope is reduced due to wear and stress or the diameter of the steel wire rope is increased due to adhesion of mud, the measuring assembly 2 can slide up and down in the first limiting slide 111 and the second limiting slide 121 under the action of the tensioning device 4, so as to ensure that the measuring assembly 2 is always tightly pressed on the steel wire rope without slipping, and the depth measurement precision can be effectively improved.

[0063] The above technical scheme enables the measuring wheel to be tightly pressed on the steel wire rope while the measuring assembly 2 can also float up and down along with the size of the material particles adhered on the steel wire rope, so as to prevent the measuring wheel from slipping and greatly improve the depth measurement precision.

[0064] In some embodiments, the slot milling depth measuring device further comprises a limiting wheel set 5, the limiting wheel set 5 is installed on the base 1; the limiting wheel set 5 comprises at least two limiting wheels 51, and there is a gap for accommodating the steel wire rope between the two limiting wheels 51; the limiting wheel set 5 is located upstream and / or downstream of the measuring assembly 2. Through the limiting wheel set 5, the running track of the steel wire rope can be limited to prevent the steel wire rope from shaking up and down.

[0065] In some embodiments, the limiting wheel set 5 comprises two sets, one of which is located upstream of the measuring assembly 2, and the other of which is located downstream of the measuring assembly 2.

[0066] Two limiting wheel sets 5 are arranged on both sides of the slot milling depth measuring device, each limiting wheel set 5 comprises two limiting wheels 51, and the two limiting wheels 51 are installed up and down, and the gap between the two limiting wheels 51 is used for passing the steel wire rope.

[0067] During construction, when the wire rope swings up and down, the swinging of the wire rope will be blocked due to the limiting of the limiting wheel groups 5 on both sides, that is, the wire rope inside the milling groove depth measuring device is in a stable state. A measuring assembly 2 is arranged between the two sets of limiting wheel groups 5 on the milling groove depth measuring device. The measuring assembly 2 is installed in the first limiting slide 111 and the second limiting slide 121 on the base 1 via the first slider 25 and the second slider 26 on the first support 211 and the second support 212. The mutual cooperation between the first slider 25 and the first limiting slide 111, and the second slider 26 and the second limiting slide 121, makes the first support 211 and the second support 212 on the measuring assembly 2 only slide up and down, but cannot rotate or move left and right.

[0068] In some embodiments, the measuring element 24 includes an encoder, the outer shell of the encoder is fixed to the support 21 , and the inner shaft of the encoder is fixed to the rotating shaft 23 .

[0069] During operation, a wire rope passes through the gap between the measuring wheel 22 and the mating wheel 3 of the milling depth measuring device. The motion of the wire rope drives the measuring wheel 22 and its attached shaft 23 to rotate synchronously. The shaft 23 then rotates and counts the inner shaft of the encoder connected to it. Assuming the number of revolutions of the measuring wheel 22 is n and the diameter of the rope groove in the measuring wheel 22 is D, the depth value is nπD.

[0070] An embodiment of the present invention further provides a slot milling machine, comprising the slot milling depth measuring device provided by any technical solution of the present invention.

[0071] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the protection content of the present invention.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A milling groove depth measuring device, characterized in that: include: A base (1) configured to provide support; A measuring assembly (2) comprising a support (21), a measuring wheel (22), a rotating shaft (23) fixedly connected to the measuring wheel (22), and a measuring element (24) mounted on the support (21); the rotating shaft (23) is rotatably mounted on the support (21), and the support (21) is slidably mounted on the base (1); and A mating wheel (3) is mounted on the base (1); a gap for accommodating a steel wire rope is provided between the mating wheel (3) and the measuring assembly (2); The support (21) comprises: A first support (211) is rotatably connected to one end of the rotating shaft (23); and A second support (212) is rotatably connected to the other end of the rotating shaft (23); The base (1) comprises: The first support plate (11) is provided with a first limiting slideway (111); the measuring assembly (2) further comprises a first slider (25), the first slider (25) is fixedly connected to the first support (211), and the first slider (25) is installed on the first limiting slideway (111); A second support plate (12) is spaced apart from the first support plate (11); the second support plate (12) is provided with a second limiting slideway (121); the measuring assembly (2) further comprises a second slider (26); the second slider (26) is fixedly connected to the second support (212); the second slider (26) is mounted on the second limiting slideway (121); and a connecting plate (13) disposed between the first support plate (11) and the second support plate (12) to fixedly connect the first support plate (11) and the second support plate (12); Wherein, the milling groove depth measuring device further includes: A tensioning device (4) is installed between the first support (211) and the base (1), and / or between the second support (212) and the base (1); the measuring wheel (22) is located on top of the mating wheel (3); the tensioning device (4) tightens the measuring wheel (22) toward the mating wheel (3) so that the gap between the measuring wheel (22) and the mating wheel (3) is minimized.

2. The milling groove depth measuring device according to claim 1, characterized in that: The connecting plate (13) comprises two pieces, and the measuring component (2) is located between the two connecting plates (13).

3. The milling groove depth measuring device according to claim 1, characterized in that: The tensioning device (4) comprises a spring, one end of the spring is connected to the first support (211) and / or the second support (212), and the other end of the spring is connected to the base (1).

4. The milling groove depth measuring device according to claim 1, characterized in that: The number of the tensioning devices (4) is multiple, and two of the tensioning devices (4) are correspondingly provided for the first slider (25), and two of the tensioning devices (4) are correspondingly provided for the second slider (26).

5. The milling groove depth measuring device according to claim 1, characterized in that: Also includes: A limiting wheel assembly (5) is mounted on the base (1); the limiting wheel assembly (5) includes at least two limiting wheels (51), and a gap for accommodating a steel wire rope is provided between the two limiting wheels (51); the limiting wheel assembly (5) is located upstream and / or downstream of the measuring component (2).

6. The milling groove depth measuring device according to claim 5, characterized in that: The limiting wheel set (5) includes two sets, one set is located upstream of the measuring component (2), and the other set is located downstream of the measuring component (2).

7. The milling groove depth measuring device according to claim 1, characterized in that: The measuring element (24) includes an encoder, the outer shell of the encoder is fixed to the support (21), and the inner shaft of the encoder is fixed to the rotating shaft (23).

8. A slot milling machine, characterized in that: The invention comprises the milling groove depth measuring device according to any one of claims 1 to 7.

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