A pit digging device for measuring compaction by sand filling method

Abstract

The present application discloses a pit digging device for measuring compaction by sand filling method. The pit digging device for measuring compaction by sand filling method comprises: a frame for fixing on the ground to be measured; a measuring cylinder mounted on the frame; a cutting and crushing mechanism mounted in the measuring cylinder to cut and crush the soil and rocks entering the measuring cylinder; a driving mechanism mounted on the frame, and the output end of the driving mechanism is connected to the measuring cylinder, so that the driving mechanism drives the measuring cylinder rotary shaft to enter the ground downward or leave the ground upward. The present application solves the technical problems of low efficiency and poor stability of pit digging by sand filling method in the related art.

Description

Technical Field

[0001] The present application relates to the technical field of compaction, and in particular to a pit digging device for measuring compaction by a sand filling method. Background Art

[0002] As an important component of roads, the importance of roadbed in road construction is increasing. The compaction detection methods of roadbed projects can be specifically divided into sand filling method, water filling method (water bag method), ring knife method, nuclear instrument method, core drilling method, etc., and the most commonly used method is the pit digging and sand filling method. According to the "Highway Roadbed and Pavement Field Test Regulations" (JTG 3450-2019), the excavation depth of the test pit is determined by different filler particle sizes, and the required depth ranges from 15cm to 40cm. During on-site operations, the digging tools used are often chisels, hammers, shovels, etc. The large workload and work intensity of digging pits took up most of the test time, requiring 2-3 test personnel to take turns digging, and we have no way to ensure that the shape of the test pit is a standard cylinder, which will affect the accuracy of the test results.

[0003] The compaction degree of the roadbed is an important indicator of the degree of compaction. It can reflect whether the roadbed meets the standards. The sand filling method is a commonly used method to measure the compaction degree. When using the sand filling method for measurement, it is necessary to dig a pit, so a pit digging device is needed. However, the general pit digging device has some disadvantages when used, such as:

[0004] First, the general pit digging device uses manual labor to dig the pit, which results in a long digging time and low digging efficiency, which is not conducive to the use of the device;

[0005] Secondly, the general pit digging device has poor stability when in use. The commonly used pit digging device uses manual pressing to fix the device, resulting in poor stability of the device.

[0006] With regard to the problems of low efficiency and poor stability of pit digging using the sand filling method in the related technology, no effective solution has been proposed so far. Summary of the invention

[0007] The main purpose of the present application is to provide a pit digging device for measuring compaction by the sand filling method, so as to solve the problems of low efficiency and poor stability of the pit digging method by the sand filling method in the related art.

[0008] In order to achieve the above-mentioned purpose, the present application provides a pit digging device for measuring compaction by sand filling method.

[0009] The pit digging device for measuring compaction by the sand filling method according to the present application comprises:

[0010] A rack, used to be fixed on the ground to be tested;

[0011] a measuring cylinder, mounted on the frame;

[0012] A cutting and crushing mechanism is installed in the measuring cylinder to cut and crush the soil and rocks entering the measuring cylinder;

[0013] The driving mechanism is installed on the frame, and the output end of the driving mechanism is connected to the measuring cylinder, so that the driving mechanism drives the rotating shaft of the measuring cylinder to enter the ground downward or leave the ground upward.

[0014] Optionally, the cutting and crushing mechanism includes an annular cutting knife and a connecting piece, and the annular cutting knife is coaxially arranged with the measuring cylinder, and the annular cutting knife is connected to the inner wall of the measuring cylinder through the connecting piece.

[0015] Optionally, the connecting member includes a fixing rod and a spring, and the measuring cylinder is provided with a fixing hole corresponding to the fixing rod;

[0016] The first end of the spring is fixed on the annular cutting knife, the second end of the spring is connected to the first end of the fixing rod, and the second end of the fixing rod is embedded in the corresponding fixing hole.

[0017] Optionally, the cutting and crushing mechanism further comprises a drill bit, the drill bit is coaxially arranged with the measuring cylinder, and the upper end of the drill bit is fixed in the measuring cylinder.

[0018] Optionally, the cutting and crushing mechanism further includes a plurality of crushing knives;

[0019] The plurality of crushing knives are arranged around the drill bit, and the crushing knives are fixed on the annular cutting knife.

[0020] Optionally, the plurality of crushing knives are distributed around the drill bit at equal angles.

[0021] Optionally, the driving mechanism includes an electric push rod, a motor and a support column;

[0022] The electric push rod is fixed on the frame, the motor is installed at the lower end of the push rod included in the electric push rod, the first end of the support column is connected to the rotating shaft of the motor, and the second end of the support column is connected to the measuring cylinder.

[0023] Optionally, a warning line is provided on the measuring cylinder.

[0024] Optionally, it further comprises a telescopic frame, which is fixed above the frame, and the measuring cylinder and the driving mechanism are both mounted on the telescopic frame.

[0025] Optionally, it further comprises a rivet rod mechanism for fixing on the ground to be tested, and the rivet rod mechanism is mounted on the frame.

[0026] In an embodiment of the present application, a pit digging device for measuring compaction by the sand filling method is provided, which is provided by: a frame for fixing on the ground to be measured; a measuring cylinder installed on the frame; a cutting and crushing mechanism installed in the measuring cylinder to cut and crush the soil and rocks entering the measuring cylinder; a driving mechanism installed on the frame, and the output end of the driving mechanism is connected to the measuring cylinder, so that the driving mechanism drives the measuring cylinder rotary shaft to enter the ground downward or leave the ground upward. In this way, when using the pit digging device for measuring compaction by the sand filling method provided by the present application, it is only necessary to fix the frame on the ground to be measured, and then drive the measuring cylinder rotary shaft downward into the ground through the driving mechanism. Since the measuring cylinder enters the ground to be measured by rotating, the stability of the pit digging by the measuring cylinder is guaranteed. At the same time, the cutting and crushing mechanism cuts and crushes the soil and rocks entering the measuring cylinder, which is convenient for later collection and brings higher pit digging efficiency. Thereby solving the technical problems of low efficiency and poor stability of pit digging by the sand filling method in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0028] Figure 1 It is a structural schematic diagram of a pit digging device for measuring compaction by a sand filling method provided in an embodiment of the present application;

[0029] Figure 2 It is a structural schematic diagram of a cutting and crushing mechanism provided in an embodiment of the present application;

[0030] Figure 3 It is a schematic diagram of the assembly of an annular cutting knife and a measuring cylinder provided in an embodiment of the present application;

[0031] Figure 4 It is a structural schematic diagram of a drill bit provided in an embodiment of the present application;

[0032] Figure 5 It is a structural schematic diagram of a rack provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0036] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0037] In addition, the terms "installed", "set", "provided with", "connected", "slidingly connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In addition, the term "plurality" shall mean two or more.

[0039] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0040] like Figures 1 to 5 As shown, the embodiment of the present application provides a pit digging device for measuring compaction by a sand filling method, comprising:

[0041] A frame 1, used for fixing on the ground to be tested;

[0042] A measuring cylinder 11 is mounted on the frame 1;

[0043] A cutting and crushing mechanism is installed in the measuring cylinder 11 to cut and crush the soil and rocks entering the measuring cylinder 11;

[0044] The driving mechanism is installed on the frame 1, and the output end of the driving mechanism is connected to the measuring cylinder 11, so that the driving mechanism drives the measuring cylinder 11 to rotate downward into the ground or upward out of the ground.

[0045] Specifically, the digging device for measuring compaction by the sand filling method provided in the present application only needs to fix the frame 1 on the ground to be measured, and then drive the measuring cylinder 11 to rotate downward into the ground through the driving mechanism. Since the measuring cylinder 11 enters the ground to be measured by rotating, the stability of the digging of the measuring cylinder 11 is guaranteed. At the same time, the cutting and crushing mechanism cuts and crushes the soil and rocks entering the measuring cylinder 11, which is convenient for later collection and brings higher digging efficiency.

[0046] Optionally, the cutting and crushing mechanism includes an annular cutting knife 12 and a connecting piece, and the annular cutting knife 12 is coaxially arranged with the measuring cylinder 11, and the annular cutting knife 12 is connected to the inner wall of the measuring cylinder 11 through the connecting piece.

[0047] Specifically, by setting a connecting piece, the annular cutting knife 12 can be coaxially set in the measuring cylinder 11. When the driving mechanism drives the measuring cylinder 11 to rotate downward into the ground, the annular cutting knife 12 will rotate with the measuring cylinder 11 to cut the soil and rocks under the measuring cylinder 11 into a cylinder, so as to facilitate the measuring cylinder 11 to perform digging operations.

[0048] Optionally, the connecting member includes a fixing rod 13 and a spring 14, and the measuring cylinder 11 is provided with a fixing hole corresponding to the fixing rod 13;

[0049] The first end of the spring is fixed on the annular cutting knife 12 , the second end of the spring is connected to the first end of the fixing rod 13 , and the second end of the fixing rod 13 is embedded in the corresponding fixing hole.

[0050] Specifically, the connecting member includes a fixing rod 13 and a spring 14. Thus, when the annular cutting knife 12 is assembled into the measuring cylinder 11, or when the annular cutting knife 12 needs to be removed from the measuring cylinder 11, it is only necessary to press the fixing rod 13 toward the spring 14 so that the fixing rod 13 is embedded in or detached from the fixing hole on the measuring cylinder 11. The operation is convenient and quick.

[0051] There may be two connecting members, which are symmetrically arranged on both sides of the annular cutting blade 12 .

[0052] Optionally, the cutting and crushing mechanism further includes a drill bit 16 , which is coaxially arranged with the measuring cylinder 11 , and the upper end of the drill bit 16 is fixed in the measuring cylinder 11 .

[0053] Specifically, when the driving mechanism drives the measuring cylinder 11 to rotate downward into the ground, the drill bit 16 rotates with the measuring cylinder 11 to drill holes to loosen the soil and rocks under the measuring cylinder 11 and break the overall structure of the soil and rocks.

[0054] Optionally, the cutting and crushing mechanism further includes a plurality of crushing knives 15;

[0055] The plurality of crushing knives 15 are arranged around the drill bit 16 , and the crushing knives 15 are fixed on the annular cutting knife 12 .

[0056] Specifically, when the driving mechanism drives the measuring cylinder 11 to rotate downward into the ground, the crushing knife 15 arranged around the drill bit 16 will rotate with the measuring cylinder 11 to crush the soil and rocks in the measuring cylinder 11. That is, when the driving mechanism drives the measuring cylinder 11 to rotate downward into the ground (that is, when digging a pit), the driving mechanism drives the annular cutting knife 12, the crushing knife and the drill bit 16 to move downward, and drives the annular cutting knife 12, the crushing knife and the drill bit 16 to rotate, the annular cutting knife 12 will cut the soil and rocks below into cylinders, and the crushing knife and the drill bit 16 will crush the soil and rocks, which is convenient for later collection, and the measuring cylinder 11 can prevent the soil and rocks from splashing out, which is convenient for collecting the soil and rocks.

[0057] Optionally, the crushing blade 15 and the annular cutting blade 12 may be of an integrated structure.

[0058] Specifically, in order to more evenly crush the soil and rocks, the plurality of crushing knives 15 are distributed around the drill bit 16 at equal angles.

[0059] Optionally, the driving mechanism includes an electric push rod 8, a motor 9 and a support column 10;

[0060] The electric push rod 8 is fixed on the frame 1, the motor 9 is installed at the lower end of the push rod included in the electric push rod 8, the first end of the support column 10 is connected to the rotating shaft of the motor 9, and the second end of the support column 10 is connected to the measuring cylinder 11.

[0061] The electric push rod 8 can push the motor 9 to move up and down, and the motor 9 drives the support column 10 to rotate. The support column 10 can drive the measuring cylinder 11 to move up and down, and can also drive the measuring cylinder 11 to rotate.

[0062] Specifically, the support column 10 and the measuring cylinder 11 may be connected via a flange.

[0063] Optionally, a warning line is provided on the measuring cylinder 11 .

[0064] The measuring cylinder 11 is provided with a warning line, and the drilling depth can be observed according to the warning line on the surface of the measuring cylinder 11, so as to determine the appropriate drilling depth.

[0065] Optionally, a telescopic frame is further included, wherein the telescopic frame is fixed above the frame 1, and the measuring cylinder 11 and the driving mechanism are both mounted on the telescopic frame.

[0066] Specifically, the telescopic frame includes a guard plate 5, a fixed column 6 and a fixed frame 7. The fixed column 6 is embedded in the inside of the guard plate 5, and the fixed column 6 and the fixed frame 7 constitute a telescopic structure. When drilling, the fixed column 6 is embedded and hung inside the guard plate 5, and then the two are fixed with bolts. At the same time, the fixed frame 7 is moved upward so that the fixed column 6 extends out from the inside of the fixed frame 7. When the device is transported, the fixed column 6 is retracted into the inside of the fixed frame 7 to reduce the footprint of the device, thereby facilitating the transportation of the device.

[0067] Optionally, it further comprises a rivet rod mechanism for fixing on the ground to be tested, and the rivet rod mechanism is installed on the frame 1.

[0068] Specifically, the rivet rod mechanism includes a fixed rivet rod 2, a screw rod 3 and a fixed disk 4. The fixed rivet rod 2 is arranged at equal angles inside the frame 1, and the fixed rivet rod 2 and the screw rod 3 are threadedly connected, and the screw rod 3 and the fixed disk 4 constitute a rotating structure, and the fixed disk 4 and the fixed rivet rod 2 constitute a sliding friction structure. When the device is installed, the fixed rivet rod 2 is placed in contact with the ground, and then the fixed disk 4 of the screw rod 3 is rotated to move upward. At this time, the air pressure in the fixed rivet rod 2 is reduced, thereby fixing the frame 1.

[0069] In addition, the frame 1 is provided with a through hole for accommodating the measuring cylinder 11 to pass through.

[0070] Here's how this application works:

[0071] ① When using the digging device for measuring compaction by the sand filling method, first fix the rivet rod 2 to the ground, then rotate the screw pin 3 to move the fixing plate 4 upward, thereby fixing the frame 1 to determine the digging position.

[0072] ② Then fit the measuring cylinder 11 against the supporting column 10 and fix the two with bolts, then embed the cutting knife 12 inside the measuring cylinder 11, and the spring 14 pushes the fixing rod 13 to move outward and embed it inside the measuring cylinder 11, thereby fixing the measuring cylinder 11 and the cutting knife 12, move the fixing frame 7 upward to extend the fixing column 6, and then embed the fixing column 6 inside the guard plate 5, and fix the two with bolts.

[0073] ③ Connect the device to an external power source, the electric push rod 8 pushes the device downward, and the motor 9 drives the cutting knife 12, the crushing knife 15 and the drill bit 16 to rotate. The cutting knife 12 cuts the ground into a cylinder during the downward movement, and the crushing knife 15 and the drill bit 16 crush the cylindrical ground. When the device is used up, the fixed frame 7 and the frame 1 are separated, and the crushed soil is collected with the measuring cylinder 11 for weighing and detecting the compaction of the ground, thereby increasing the overall practicality.

[0074] In an embodiment of the present application, a pit digging device for measuring compaction by the sand filling method is provided, which is provided by: a frame 1, which is used to be fixed on the ground to be measured; a measuring cylinder 11, which is installed on the frame 1; a cutting and crushing mechanism, which is installed in the measuring cylinder 11, to cut and crush the soil and rocks entering the measuring cylinder 11; a driving mechanism, which is installed on the frame 1, and the output end of the driving mechanism is connected to the measuring cylinder 11, so that the driving mechanism drives the measuring cylinder 11 to rotate downward into the ground or upward out of the ground. In this way, when using the pit digging device for measuring compaction by the sand filling method provided by the present application, it is only necessary to fix the frame 1 on the ground to be measured, and then drive the measuring cylinder 11 to rotate downward into the ground through the driving mechanism. Since the measuring cylinder 11 enters the ground to be measured by rotating, the stability of the pit digging by the measuring cylinder 11 is guaranteed. At the same time, the cutting and crushing mechanism cuts and crushes the soil and rocks entering the measuring cylinder 11, which is convenient for later collection and brings higher pit digging efficiency. Thereby solving the technical problems of low efficiency and poor stability of pit digging by the sand filling method in the related art.

[0075] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pit digging device for measuring compaction by sand filling method, characterized in that: include: A rack, used to be fixed on the ground to be tested; a measuring cylinder, mounted on the frame; A cutting and crushing mechanism is installed in the measuring cylinder to cut and crush the soil and rocks entering the measuring cylinder; A driving mechanism is mounted on the frame, and an output end of the driving mechanism is connected to the measuring cylinder, so that the driving mechanism drives the measuring cylinder rotary shaft downward into the ground or upward out of the ground; The cutting and crushing mechanism comprises an annular cutting knife and a connecting piece, and the annular cutting knife is coaxially arranged with the measuring cylinder, and the annular cutting knife is connected to the inner wall of the measuring cylinder through the connecting piece; The connecting piece includes a fixing rod and a spring, and the measuring cylinder is provided with a fixing hole corresponding to the fixing rod; The first end of the spring is fixed on the annular cutting knife, the second end of the spring is connected to the first end of the fixing rod, and the second end of the fixing rod is embedded in the corresponding fixing hole; The cutting and crushing mechanism further comprises a drill bit, the drill bit is coaxially arranged with the measuring cylinder, and the upper end of the drill bit is fixed in the measuring cylinder; The cutting and crushing mechanism also includes a plurality of crushing knives; The plurality of crushing knives are arranged around the drill bit, and the crushing knives are fixed on the annular cutting knife; The drill bit will rotate with the measuring cylinder, drilling holes to loosen the soil and rocks under the measuring cylinder and break the overall structure of the soil and rocks; The plurality of crushing knives are distributed around the drill bit at equal angles.

2. The pit digging device for measuring compaction by sand filling method according to claim 1, characterized in that: The driving mechanism comprises an electric push rod, a motor and a support column; The electric push rod is fixed on the frame, the motor is installed at the lower end of the push rod included in the electric push rod, the first end of the support column is connected to the rotating shaft of the motor, and the second end of the support column is connected to the measuring cylinder.

3. The pit digging device for measuring compaction by sand filling method according to claim 1, characterized in that: A warning line is arranged on the measuring cylinder.

4. The pit digging device for measuring compaction by sand filling method according to claim 1, characterized in that: It also includes a telescopic frame, which is fixed above the frame, and the measuring cylinder and the driving mechanism are both installed on the telescopic frame.

5. The pit digging device for measuring compaction by sand filling method according to claim 1, characterized in that: It also includes a rivet rod mechanism for fixing on the ground to be tested, and the rivet rod mechanism is installed on the frame.

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