Assembly type tilt angle sensor for engineering machinery

Abstract

The utility model discloses an assembly type tilt angle sensor for engineering machinery, and belongs to the technical field of engineering machinery. An assembly type tilt angle sensor for engineering machinery comprises a tilt angle sensor body, a mounting box and a mechanical arm, a mounting hole is formed in the mechanical arm, an avoiding groove is formed in the outer side of the mounting box, a U-shaped clamping plate is arranged in the avoiding groove, the U-shaped clamping plate is in sliding connection with the mounting box through a telescopic plate, a clamping groove is formed in the telescopic plate, and a lifting clamping block is arranged in the mounting box. And the lifting clamping block is matched with the clamping groove through driving of the screw rod, so that the U-shaped clamping plate is locked with the edge of the mounting hole. The screw drives the lifting clamping block to be wedged into the slope self-locking mechanism of the clamping groove to form continuous tensioning force, so that the U-shaped clamping plate is tightly abutted against the edge of the mounting hole of the mechanical arm, and the problem of nut loosening caused by vibration in traditional bolt connection is solved. The limiting block and the limiting groove restrain the lifting clamping block to only move linearly, and the flange of the cross-shaped groove head of the screw is matched with the annular groove to prevent axial movement.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to an assembled tilt sensor for engineering machinery. Background Technology

[0002] In the field of construction machinery, the reliable installation of tilt sensors is crucial for achieving precise equipment control and safety monitoring. When installed on excavators, tilt sensors can acquire real-time positional information of the robotic arm and bucket, enabling precise calculation of the bucket's spatial coordinates. This helps operators accurately complete tasks such as excavation, loading, and leveling. It is particularly suitable for scenarios requiring high operational precision, such as pipeline laying and foundation excavation.

[0003] In existing technologies, tilt sensors are mainly installed using two methods: direct bolt fixing or adhesive bonding with strong 3M glue. However, both methods have drawbacks:

[0004] Strong 3M adhesive relies on the adhesive layer for fixation. Although it has the advantages of convenient installation and no need for drilling, the adhesive layer is easily corroded by oil or moisture on the surface of the robotic arm. It will also age faster at high temperatures and become brittle and lose its adhesiveness at low temperatures, resulting in insufficient sensor fixation stability, inconvenience in removal, and difficulty in cleaning residual adhesive.

[0005] Bolts provide a rigid connection between the sensor and the robotic arm. While this can withstand a certain load, the robotic arm will vibrate as a whole during use. In high-frequency vibrations, the nuts may loosen, causing the limit switch or fixation to fail. Regular maintenance and tightening are required.

[0006] The above methods cannot meet the needs of construction machinery for high reliability, high-precision positioning, vibration damping, and convenient maintenance. Utility Model Content

[0007] The purpose of this invention is to solve the problem of insufficient stability of tilt sensors installed on excavators in the existing technology, which leads to insufficient positioning accuracy of the tilt sensors during use. Therefore, this invention proposes an assembled tilt sensor for engineering machinery.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] An assembled tilt sensor for engineering machinery includes a tilt sensor body, a mounting box, and a robotic arm. The robotic arm has a mounting hole, and the outer side of the mounting box has an clearance groove. A U-shaped clamping plate is provided in the clearance groove. The U-shaped clamping plate is slidably connected to the mounting box through a telescopic plate. The telescopic plate has a slot. A lifting block is provided in the mounting box. The lifting block is driven by a screw to cooperate with the slot, so that the U-shaped clamping plate is locked to the edge of the mounting hole.

[0010] In some embodiments, the telescopic plate is connected to the tilt sensor body by a connecting strap, which is made of a low-elasticity material and is used for three-point bracing to fix the tilt sensor body.

[0011] In some embodiments, the bottom of the lifting block is provided with a second inclined surface, and the two sides of the slot are provided with first inclined surfaces. The second inclined surface cooperates with the first inclined surface to move the telescopic plate outward.

[0012] In some embodiments, the lifting block is provided with a limiting block, and the mounting box is provided with a limiting groove. The limiting block cooperates with the limiting groove to restrict the lifting block to only move in a straight line.

[0013] When the U-shaped card is fully retracted into the clearance slot, the second inclined surface of the lifting block corresponds and engages with the first inclined surface of the slot; the lower surface of the lifting block has the same area as the bottom of the slot, forming surface contact when locked.

[0014] In some embodiments, the cross-shaped groove head of the screw is rotatably connected to the annular groove of the limiting plate, and the cross-shaped groove head is provided with a flange to prevent the screw from moving axially.

[0015] In some embodiments, the bottom of the mounting box is provided with an elastic support structure, including a support cylinder, a spring, a telescopic column and a fixing plate, for buffering the vibration of the tilt sensor body;

[0016] The height of the telescopic plate is lower than the bottom surface of the tilt sensor body. When locked, it drives the connecting belt to tighten, forming a pre-tension force.

[0017] In some embodiments, the telescopic column may be inserted into the support cylinder or located outside the support cylinder, and the spring provides cushioning perpendicular to the direction of the robotic arm.

[0018] In some embodiments, the mounting box has a triangular structure, and the clearance grooves are respectively provided on three sides to form a three-point locking of the tilt sensor body;

[0019] The shape of the mounting hole is adapted to the mounting box. During installation, the robotic arm is perpendicular to the ground to ensure that the coordinate axis of the tilt sensor body is aligned with the coordinate axis of the robotic arm.

[0020] In some embodiments, the mounting holes can be formed on the plate welded to the robotic arm, suitable for installation in different positions; the connection structure between the mounting box and the robotic arm is suitable for the excavator boom, arm, bucket, and body; the mounting box is provided with wiring holes to support multiple tilt sensors connected in series.

[0021] Compared with the prior art, this utility model provides an assembled tilt sensor for engineering machinery, which has the following beneficial effects.

[0022] 1. This utility model utilizes a screw-driven lifting block wedged into a self-locking mechanism on an inclined surface to create continuous tension, thereby ensuring a tight fit between the U-shaped clamping plate and the edge of the robotic arm mounting hole. This solves the problem of nut loosening caused by vibration in traditional bolt connections. The limiting block and limiting groove restrict the lifting block to linear movement only, while the flange of the screw's cross-groove head engages with the annular groove to prevent axial movement, reducing the loosening rate of traditional bolt fixing methods.

[0023] 2. This utility model provides vertical buffering through the spring inside the support cylinder, absorbing the impact and vibration loads during the movement of the robotic arm, and avoiding damage to the internal components of the tilt sensor body caused by rigid connection.

[0024] 3. In this utility model, three low-elasticity connecting straps pull the sensor body through a telescopic plate to suppress lateral swaying. Together with the spring, they form a three-dimensional vibration reduction, reducing the intensity of the vibration force transmitted to the tilt sensor body when the excavator is working, thereby improving the stability of the tilt sensor body during use.

[0025] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the tilt sensor body of this utility model.

[0027] Figure 2 This is a schematic diagram of the structure of the present invention installed on the robotic arm.

[0028] Figure 3 This is a schematic diagram of the installation structure of the mounting box of this utility model.

[0029] Figure 4 This is a schematic diagram of the tilt sensor body and mounting box of this utility model.

[0030] Figure 5 This is a schematic diagram of the connection between the telescopic plate and the lifting block of this utility model.

[0031] Figure 6 This utility model Figure 5 A magnified structural diagram of region A in the middle.

[0032] Figure 7 This utility model Figure 5 Enlarged structural diagram of region B.

[0033] Figure 8 This is a schematic diagram of the connecting strip of this utility model.

[0034] Figure 9 This is a schematic diagram of the connection between the tilt sensor body and the support cylinder of this utility model.

[0035] Figure 10 This is a schematic diagram of the telescopic column of this utility model located outside the support cylinder.

[0036] In the picture:

[0037] 1. Tilt sensor body; 101. Positioning hole; 102. Connecting strap; 2. Mounting box; 3. Robotic arm; 301. Mounting hole; 201. Clearance groove; 202. U-shaped clamping plate; 203. Telescopic groove; 204. Telescopic plate; 2041. Slot; 2042. Connecting hole; 205. Lifting groove; 2051. Limiting groove; 2052. Limiting block; 206. Lifting clamping block; 208. Screw; 2081. Flange; 207. Limiting plate; 2071. Annular groove; 4. Support cylinder; 401. Spring; 402. Telescopic column; 403. Fixing plate. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0039] Reference Figure 1-10 An assembled tilt sensor for engineering machinery includes a tilt sensor body 1. A positioning hole 101 is provided on the outer side of the tilt sensor body 1. The positioning hole 101 can be a threaded hole for positioning and fixing the tilt sensor body 1.

[0040] It also includes a mounting box 2 and a robotic arm 3. The robotic arm 3 is provided with mounting holes 301. As an alternative embodiment, the mounting holes 301 can be formed in a plate, which is welded and fixed to the robotic arm 3. The mounting holes 301 are used for mounting and fixing the mounting box 2. The opening and installation of the mounting holes 301 are not limited to the boom and arm of the excavator, but also include the bucket and body, etc. The mounting box 2 is pre-set with wiring holes for connecting multiple tilt sensors in series.

[0041] An clearance groove 201 is provided on the outer side of the mounting box 2. A U-shaped retaining plate 202 is provided inside the clearance groove 201. An expansion groove 203 is provided on the inner side of the clearance groove 201, which extends into the mounting box 2. An expansion plate 204 is provided in the middle of the U-shaped retaining plate 202. The expansion plate 204 is adapted to the expansion groove 203. A slot 2041 is provided on the upper surface of the expansion plate 204. The two sides of the slot 2041 are first inclined surfaces.

[0042] The top of the telescopic groove 203 is provided with a lifting groove 205. Inside the lifting groove 205 is a lifting block 206. A threaded hole is provided in the middle of the lifting block 206, and a screw 208 is installed inside the threaded hole. A limiting groove 2051 is provided on the inner side of the lifting groove 205, and a limiting block 2052 is provided on the outer side of the lifting block 206. The limiting block 2052 is adapted to the limiting groove 2051. Preferably, the length of the limiting groove 2051 is twice the length of the limiting block 2052. A second inclined surface is provided on both sides of the bottom of the lifting block 206, and the lower surface of the lifting block 206 has the same area as the bottom of the groove 2041. When the U-shaped plate 202 is fully retracted into the clearance groove 201, the second inclined surface on one side of the lifting block 206 corresponds and engages with the first inclined surface on one side of the groove 2041.

[0043] Specifically, the top of the clearance groove 201 is provided with a limiting plate 207, and the inside of the limiting plate 207 is provided with an annular groove 2071. The cross groove head of the screw 208 is rotatably connected inside the annular groove 2071. The cross groove head of the screw 208 is provided with a flange 2081, which is adapted to the annular groove 2071.

[0044] A connecting hole 2042 is provided at the end of the telescopic plate 204 away from the U-shaped clamping plate 202. The mounting box 2 and its internal groove are triangular. The clearance grooves 201 are respectively provided on the three surfaces of the outer side of the mounting box 2. There are three positioning holes 101 on the tilt sensor body 1. The three positioning holes 101 correspond to the three telescopic plates 204 respectively. A connecting strip 102 is provided between the two corresponding connecting holes 2042 and the two positioning holes 101. One end of the connecting strip 102 is provided with a connecting ring, which is used to connect with the connecting hole 2042. The other end of the connecting strip 102 is provided with a clamp, which is used to connect with the positioning hole 101. The three connecting strips 102 are respectively fixed to the three ends of the tilt sensor body 1 by the three telescopic plates 204.

[0045] The shape of the mounting box 2 and the mounting hole 301 is not limited to triangle, and can be rectangular or square. Sufficient spacing is left between the mounting box 2 and the wiring terminal of the tilt sensor body 1, which meets the space requirements when the connecting wire is connected to the tilt sensor body 1.

[0046] The tilt sensor body 1 and the mounting box 2 are provided with an elastic support structure for the tilt sensor body 1 at the bottom. The elastic support structure includes a support cylinder 4 at the top of the mounting box 2, a spring 401 at the bottom of the support cylinder 4, a telescopic column 402 at the top of the spring 401, and a fixing plate 403 at the top of the telescopic column 402. The fixing plate 403 is fixedly connected to the lower surface of the tilt sensor body 1.

[0047] The mounting box 2 has a glass cover installed on the side away from the robotic arm 3, which makes it easy to observe the current status of the internal tilt sensor body 1.

[0048] In this utility model, during installation, a mounting hole 301 is provided on the robotic arm 3 or the plate fixed on the robotic arm 3. The mounting hole 301 is triangular in shape and is adapted to the size of the mounting box 2. When the mounting hole 301 is opened, the robotic arm 3 is completely perpendicular to the ground. After the tilt sensor body 1 and the mounting box 2 are installed, the coordinate axis of the tilt sensor body 1 is strictly aligned with the coordinate axis of the robotic arm 3.

[0049] The height of the inner groove of the U-shaped plate 202 matches the depth of the mounting hole 301. The bottom of the tilt sensor body 1 is fixed to the fixing plate 403 by bolts or by welding. The clamp of the connecting strap 102 is connected to the positioning hole 101. The connecting strap 102 is made of low elasticity material.

[0050] In the initial state, the connecting belt 102 pulls the telescopic plate 204, making the telescopic plate 204 close to the tilt sensor body 1. The lower surface of the lifting block 206 is higher than the telescopic plate 204, and the three U-shaped plates 202 are respectively inserted into the three clearance slots 201. Take the top of the mounting box 2 and press it into the mounting hole 301, so that the three U-shaped clamping plates 202 correspond to the three edges of the mounting hole 301 respectively. Keep the mounting box 2 in position, and then tighten the three screws 208 with a screwdriver. Through the cooperation of the screws 208 with the internal threaded holes of the lifting block 206, under the limiting effect of the annular groove 2071 on the cross groove head of the screw 208, and the limiting effect of the limiting groove 2051 on the limiting block 2052 and the lifting block 206, the lifting block 206 moves vertically downward. The second inclined surface at the bottom of the lifting block 206 presses down on the first inclined surface on one side of the slot 2041. The second inclined surface cooperates with the inclined surface of the first inclined surface to make the telescopic plate 204 and the U-shaped clamping plate 206 move vertically downward. 02 moves outward, that is, the inner groove of the U-shaped plate 202 aligns with the edge of the mounting hole 301. At the same time, the telescopic plate 204 pulls the connecting strap 102 outward in the opposite direction. The height of the telescopic plate 204 is lower than the bottom surface of the tilt sensor body 1, causing the tilt sensor body 1 to compress the spring 401 downward. This achieves appropriate elastic support for the tilt sensor body 1 by the spring 401 and provides a reverse preload force. At the same time, the three connecting straps 102 provide three-point bracing and fixation to the end of the tilt sensor body 1, forming a triangular constraint on the tilt sensor body 1. This provides precise positioning for the tilt sensor body 1 and ensures that the coordinate axis of the tilt sensor body 1 is strictly aligned with the coordinate axis of the robotic arm 3. The spring 401 is preferably an anti-torsion spring to prevent the tilt sensor body 1 from twisting. Furthermore, a guide and limiting structure for the spring 401 can be set on the outside of the spring 401 and inside the support cylinder 4 to further constrain the linear movement of the spring 401.

[0051] The telescopic column 402 can be inserted into the support cylinder 4 or located outside the support cylinder 4. The diameter of the telescopic column 402 is equal to the inner diameter of the support cylinder 4. When the telescopic column 402 is located outside the support cylinder 4, the spring 401 provides buffering for the tilt sensor body 1 in a direction perpendicular to the robotic arm 3. The low-elasticity connecting band 102 absorbs the lateral vibration energy of the tilt sensor body 1 to form three-dimensional vibration reduction for the tilt sensor body 1.

[0052] After the limiting block 2052 moves to the bottom of the limiting groove 2051, the lower surface of the lifting block 206 aligns with the lower surface of the groove 2041, completing the wedging of the lifting block 206 into the groove 2041. This indicates that the screw 208 is screwed downwards to the bottom, and the inner groove of the U-shaped plate 202 is tightly aligned with the edge of the mounting hole 301. When the robotic arm 3 vibrates, the outward pressing action of the three U-shaped plates 202 against the edge of the mounting hole 301 makes the connection between the mounting box 2 and the robotic arm 3 more stable. During frequency vibration, the bottom end of the lifting block 206 is limited by the slot 2041, and the internal thread of the threaded hole of the lifting block 206 and the external thread of the screw 208 limit the lifting block 206. The lifting block 206 can only move in a straight line to prevent the threads from loosening due to vibration. The flange 2081 on the cross slot head cooperates with the ring groove 2071 to prevent the screw 208 from moving axially, so that the position of the lifting block 206 is fixed and difficult to shake, thereby further improving the stability when the mounting box 2 is connected to the robotic arm 3.

[0053] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A modular tilt sensor for engineering machinery, comprising a tilt sensor body (1), characterized in that, It also includes a mounting box (2) and a robotic arm (3). The robotic arm (3) is provided with a mounting hole (301). The mounting box (2) has an clearance groove (201) on its outer side. The clearance groove (201) is provided with a U-shaped card plate (202). The U-shaped card plate (202) is slidably connected to the mounting box (2) through a telescopic plate (204). The telescopic plate (204) is provided with a card slot (2041). The mounting box (2) is provided with a lifting block (206). The lifting block (206) is driven by a screw (208) to cooperate with the card slot (2041) so that the U-shaped card plate (202) is locked to the edge of the mounting hole (301).

2. The assembled tilt sensor for engineering machinery according to claim 1, characterized in that, The telescopic plate (204) is connected to the tilt sensor body (1) by a connecting strap (102), which is made of a low-elasticity material and is used for three-point bracing to fix the tilt sensor body (1).

3. The assembled tilt sensor for engineering machinery according to claim 1, characterized in that, The bottom of the lifting block (206) is provided with a second inclined surface, and the two sides of the slot (2041) are provided with first inclined surfaces. The second inclined surface cooperates with the first inclined surface to make the telescopic plate (204) move outward.

4. The assembled tilt sensor for engineering machinery according to claim 1, characterized in that, The lifting block (206) is provided with a limiting block (2052), and the mounting box (2) is provided with a limiting groove (2051). The limiting block (2052) cooperates with the limiting groove (2051) to restrict the lifting block (206) to only move in a straight line. When the U-shaped card plate (202) is fully retracted into the clearance groove (201), the second inclined surface of the lifting block (206) corresponds to and engages with the first inclined surface of the slot (2041); the lower surface of the lifting block (206) and the bottom area of ​​the slot (2041) are equal, forming surface contact when locked.

5. The assembled tilt sensor for engineering machinery according to claim 1, characterized in that, The cross-shaped groove head of the screw (208) is rotatably connected to the annular groove (2071) of the limiting plate (207), and the cross-shaped groove head is provided with a flange (2081) to prevent the screw (208) from moving axially.

6. The assembled tilt sensor for engineering machinery according to claim 1, characterized in that, The bottom of the mounting box (2) is provided with an elastic support structure, including a support cylinder (4), a spring (401), a telescopic column (402) and a fixing plate (403), which are used to buffer the vibration of the tilt sensor body (1); The height of the telescopic plate (204) is lower than the bottom surface of the tilt sensor body (1). When locked, it drives the connecting belt (102) to tighten, forming a pre-tightening force.

7. A prefabricated tilt sensor for engineering machinery according to claim 6, characterized in that, The telescopic column (402) can be inserted into the support cylinder (4) or located outside the support cylinder (4), and the spring (401) provides cushioning in a direction perpendicular to the robotic arm (3).

8. The assembled tilt sensor for engineering machinery according to claim 1, characterized in that, The mounting box (2) has a triangular structure, and the clearance grooves (201) are respectively provided on three sides to form a three-point locking of the tilt sensor body (1); The shape of the mounting hole (301) is adapted to the mounting box (2). During installation, the robotic arm (3) is perpendicular to the ground to ensure that the coordinate axis of the tilt sensor body (1) is aligned with the coordinate axis of the robotic arm (3).

9. A prefabricated tilt sensor for engineering machinery according to claim 1, characterized in that, The mounting hole (301) can be opened on the plate welded to the robotic arm (3) and is suitable for installation in different positions; the connection structure between the mounting box (2) and the robotic arm (3) is suitable for the excavator boom, arm, bucket and body; the mounting box (2) is provided with wiring holes to support multiple tilt sensors connected in series.

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