Drop hammer type dumper lifting angle measuring instrument

Abstract

The utility model relates to the technical field of dumper angle measurement, in particular to a drop hammer type dumper lifting angle measuring instrument, which comprises a shell made of a transparent material and provided with a through hole; the protractor is rotationally connected in the shell by taking the circle center as an axis, a positioning block is arranged at the circle center of the protractor, and a gravity block is fixed at 90 degrees around the protractor; the drop hammer is rotationally connected to the positioning block, and at the initial position, the drop hammer points to the 90-degree position of the protractor; the locking mechanism comprises a key penetrating through the through hole and a locking assembly fixedly connected with the key and arranged in the shell, when the locking assembly is located at the initial position, the locking assembly is far away from the protractor, and when the locking assembly is locked, the locking assembly abuts against the protractor; and the magnet is fixedly arranged on one side, adjacent to the protractor, of the shell. According to the angle measuring instrument, through the rotatable protractor and the locking mechanism used for locking the protractor, the accurate positioning of the angle of the angle measuring instrument is improved, and the service life of the measuring instrument is prolonged by sealing the internal structure through the transparent shell.

Description

Technical Field

[0001] This utility model relates to the field of dump truck angle measurement technology, and in particular to a hammer-type dump truck lifting angle measuring instrument. Background Technology

[0002] In road construction, the transportation and unloading of asphalt mixtures are crucial steps. To ensure the mixture is evenly and smoothly unloaded into paving equipment, the lifting angle of dump trucks needs precise control. Currently, when raising the dump truck bed at construction sites, the lifting angle usually relies on the experience and intuition of the supervisor. The supervisor judges the angle of the bed by visual inspection to decide when to stop lifting. While this method can achieve basic angle control with experienced operators, it is inherently unpredictable.

[0003] In the prior art, such as the "Hanging Hammer Type Dump Truck Lifting Angle Measuring Instrument" published by Chinese Invention Patent No. CN103075949A on May 1, 2013, the present invention includes a base, and the vertical surface of the base is provided with an angle measuring scale. The angle measuring scale and the suspension rope connected at one end to the center of the angle measuring scale on the base and at the other end to the hanging hammer form a protractor, which performs measurement through a simple structure.

[0004] However, the inventors discovered during practical application that when the angle measuring instrument is attached to the carriage, the initial position of the pointer may be inaccurate. In order to make the initial position of the pointer more accurate, there is an urgent need for an angle measuring instrument that can more accurately locate the angle. Utility Model Content

[0005] In view of at least one of the above technical problems, the present invention provides a plumb bob type dump truck lifting angle measuring instrument, which adopts an improved dial structure to achieve accuracy in measuring angle.

[0006] According to a first aspect of the present invention, a lifting angle measuring instrument for a drop truck with a pendulum is provided, comprising:

[0007] The housing is made of transparent material and has through holes.

[0008] A protractor is rotatably connected inside the housing about a center point. The protractor also has a positioning block at its center and a gravity block fixed at 90 degrees around its perimeter.

[0009] The plumb bob is rotatably connected to the positioning block. In its initial position, the plumb bob points at 90 degrees to the protractor.

[0010] The locking mechanism includes a button passing through the through hole, a locking component fixedly connected to the button and disposed inside the housing, wherein when the locking component is in the initial position, the locking component is away from the protractor, and when the locking component is locked, it abuts against the protractor.

[0011] A magnet is fixedly installed on the side of the housing adjacent to the protractor.

[0012] In some embodiments of this utility model, the locking assembly includes a locking rod fixedly connected to the button, the locking rod being perpendicular to the positioning block, the locking rod being movable relative to or away from the positioning block, a spring being sleeved between the locking rod and the housing, and the locking rod also having a locking component.

[0013] In some embodiments of this utility model, the positioning block also has a circular groove, the locking rod has a frustum-shaped structure, the area of ​​the first end face near the circular groove is smaller than the area of ​​the second end face near the button, and the diameter of the circular groove is slightly larger than the first end face.

[0014] In some embodiments of this utility model, the first end face is further provided with an anti-slip plate, and when the locking rod approaches the positioning block, the anti-slip plate abuts against the positioning block.

[0015] In some embodiments of this utility model, the locking rod also has a guide assembly, including a guide rib protruding from the locking rod, and a guide groove formed at the through hole and disposed opposite to the guide rib, wherein the guide rib extends in the same direction as the locking rod.

[0016] In some embodiments of this utility model, the locking assembly includes a buckle disposed on the locking rod, the buckle being perpendicular to the extending direction of the locking rod, the buckle extending out of the locking rod and locking when the locking rod moves to a specific position, and the button being pressed to unlock.

[0017] In some embodiments of this utility model, the hammer and the positioning block are connected by ball bearings.

[0018] In some embodiments of this invention, the housing also has a shock-absorbing pad on the side with the magnet.

[0019] In some embodiments of this utility model, the housing is a sealed structure.

[0020] In some embodiments of this utility model, the shell is made of acrylic material.

[0021] The beneficial effects of this invention are as follows: This invention achieves precise measurement of the lifting angle of a dump truck through the organic combination of a transparent shell, a protractor, a plumb bob, a locking mechanism, and magnets. Compared to existing technologies that rely on manual experience and visual estimation, this invention provides a stable angle reference under the pointing force of the plumb bob, avoiding errors caused by human judgment. The combination of the protractor and plumb bob ensures accurate angle control. The transparent shell design makes the internal structure more intuitive to observe, facilitating real-time angle data reading by operators. The application of the locking mechanism and magnets enhances the stability and anti-interference ability of the measuring instrument in the working environment, ensuring accuracy and reliability even under complex conditions at the construction site. The overall structure is simple and easy to operate, significantly improving the accuracy of dump truck lifting angle control and construction quality, and solving the problems of inaccurate angle measurement and reliance on visual estimation in the prior art. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a blade support structure in the related technologies known to the inventor in the background art of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the lifting angle measuring instrument for a dump truck with a drop hammer in this embodiment of the present invention;

[0025] Figure 3 This is a side view of the lifting angle measuring instrument for a drop truck with a pendulum in an embodiment of this utility model;

[0026] Figure 4 As an embodiment of this utility model Figure 3 A schematic diagram of the lifting angle measuring instrument for a central-type dump truck when it is opened;

[0027] Figure 5 This is a schematic diagram of the leading edge support mechanism in an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the leading edge support structure from another perspective in an embodiment of this utility model.

[0029] Reference numerals: 1. Housing; 11. Through hole; 2. Protractor; 21. Positioning block; 21a. Circular groove; 3. Plumb bob; 4. Locking mechanism; 41. Button; 42. Locking assembly; 42a. Locking rod; 42a1. First end face; 42a2. Second end face; 42b. Spring; 44. Guide assembly; 44a. Guide rib; 44b. Guide groove; 5. Magnet. Detailed Implementation

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] like Figures 1 to 6 The lifting angle measuring instrument for the type 3 dump truck shown includes: housing 1, protractor 2, plumb bob 3, locking mechanism 4, and magnet 5.

[0034] The shell 1 is made of transparent material and has a through hole 11. It should be noted that the transparent material can be made of various materials, such as acrylic, tempered glass, epoxy resin, or polycarbonate.

[0035] The protractor 2 is rotatably connected inside the housing 1 with the center as the axis. The center of the protractor 2 also has a positioning block 21, and a gravity block is fixed at 90 degrees around the perimeter of the protractor 2. There are many ways to rotatably connect the protractor 2, such as ball bearing connection, sleeve bearing connection, rotating pin, or other forms combined with pins.

[0036] The plumb bob 3 is rotatably connected to the positioning block 21. In the initial position, the plumb bob 3 points to 90 degrees of the protractor 2. There are many ways to connect the plumb bob 3 and the positioning block 21. It can be a pin rotation, a ball bearing, a flexible connection, or other rotatable connection.

[0037] The locking mechanism 4 includes a button 41 passing through the through hole 11, and a locking component 42 fixedly connected to the button 41 and disposed inside the housing 1. When the locking component 42 is in the initial position, the locking component 42 is away from the protractor 2. When the locking component 42 is locked, it abuts against the protractor 2. The locking component 42 can take many forms, such as mechanical snap-locking, screw locking, pin locking, or friction locking.

[0038] Magnet 5 is fixedly installed on the side of housing 1 adjacent to protractor 2.

[0039] In specific usage, such as Figure 1 , Figure 5 As shown, firstly, the angle measuring instrument is visually attached to the side of the vehicle body by magnet 5. The protractor 2 is then returned to its original position by the gravity block on the protractor 2. Press button 41 to lock the protractor 2 through locking component 42, and the vehicle body is raised. The raising and lowering of the vehicle body is controlled by observing the angle change between the plumb bob 3 and the protractor 2. After the test is completed, press button 41 to unlock the locking mechanism 4, allowing the protractor 2 to rotate again. The angle measuring instrument is then removed, and the test is completed.

[0040] This invention achieves precise measurement of the lifting angle of a dump truck through the organic combination of a transparent housing 1, a protractor 2, a plumb bob 3, a locking mechanism 4, and a magnet 5. Compared to existing technologies that rely on manual experience and visual estimation, this invention provides a stable angle reference under the pointing force of the plumb bob 3, avoiding errors caused by human judgment. The combination of the protractor 2 and the plumb bob 3 ensures the accuracy of angle control. The transparent housing 1 design makes the internal structure more intuitive to observe, facilitating real-time angle data reading by operators. The application of the locking mechanism 4 and the magnet 5 enhances the stability and anti-interference ability of the measuring instrument in the working environment, ensuring the accuracy and reliability of measurements even under complex conditions at the construction site. The overall structure is simple and easy to operate, significantly improving the accuracy of dump truck lifting angle control and construction quality, and solving the problems of inaccurate angle measurement and uncertainty due to reliance on visual estimation in the prior art.

[0041] like Figure 2 , Figure 3As shown, in some embodiments of this utility model, the locking component 42 includes a locking rod 42a fixedly connected to the button 41. The locking rod 42a is perpendicular to the positioning block 21 and can move relatively closer to or away from the positioning block 21. A spring 42b is sleeved between the locking rod 42a and the housing 1. The locking rod 42a also has a locking component. By moving the locking rod 42a closer to or away from the positioning block 21, the swing of the hammer 3 can be effectively restricted when needed, thereby ensuring that the angle of the protractor 2 remains stable. The locking rod 42a is fixedly connected to the button 41, and the user can easily complete the locking or unlocking operation by simply pressing the button 41. The spring 42b provides an automatic reset function. When the button 41 is released, the locking rod 42a is automatically reset, restoring the free swing of the protractor 2. The locking component further prevents the locking rod 42a from accidentally loosening under vibration or external force, ensuring the safety and stability of the lock. This not only improves the ease of operation of the device but also reduces wear and extends the service life of the device, making it very suitable for use in complex environments such as construction sites.

[0042] In some embodiments of this utility model, such as Figure 3 , Figure 4 As shown, the positioning block 21 also has a circular groove 21a, and the locking rod 42a has a frustum-shaped structure. The area of ​​the first end face 42a1 near the circular groove 21a is smaller than the area of ​​the second end face 42a2 near the button 41, and the diameter of the circular groove 21a is slightly larger than the first end face 42a1. The positioning block 21 has a circular groove 21a, and the locking rod 42a has a frustum-shaped structure. The area of ​​the first end face 42a1 near the circular groove 21a is smaller than the area of ​​the second end face 42a2 near the button 41, and the diameter of the circular groove 21a is slightly larger than the first end face 42a1. When the locking rod 42a engages with the circular groove 21a, it can naturally embed into the groove, achieving a stable and precise locking effect. The frustum-shaped structure allows the locking rod 42a to gradually center as it is inserted into the groove, reducing the possibility of misalignment. At the same time, it provides a larger contact area during locking, enhancing the locking's firmness and shock resistance. Furthermore, this structure makes unlocking smoother and extends the device's service life.

[0043] In some embodiments of this utility model, an anti-slip plate is also provided at the first end face 42a1. When the locking rod 42a approaches the positioning block 21, the anti-slip plate abuts against the positioning block 21. Providing an anti-slip plate at the first end face 42a1 of the locking rod 42a ensures that the anti-slip plate abuts against the positioning block 21 when the locking rod 42a approaches. During locking, the anti-slip plate increases the friction of the contact surface, effectively preventing the locking rod 42a from sliding or loosening when subjected to external vibration or impact, significantly improving the stability and shock resistance of the locking mechanism. Simultaneously, the material of the anti-slip plate reduces wear on the positioning block 21 from direct friction, extending the service life of the device.

[0044] like Figure 6 As shown, in some embodiments of this utility model, the locking rod 42a also has a guide assembly 44, including a guide rib 44a protruding from the locking rod 42a and a guide groove 44b opened at the through hole 11 and disposed opposite to the guide rib 44a. The guide rib 44a extends in the same direction as the locking rod 42a. The fact that the guide rib 44a extends in the same direction as the locking rod 42a ensures that the locking rod 42a remains stable during movement and is not prone to deviation or shaking. This design improves the accuracy and smoothness of the locking operation, reduces jamming or wear caused by lateral movement, thereby improving the durability of the device and the stability of the locking effect, and is especially suitable for maintaining the stable movement of the locking rod 42a in vibration or complex environments.

[0045] In some embodiments of this utility model, the locking component includes a latch disposed on the locking rod 42a. The latch is perpendicular to the extending direction of the locking rod 42a. When the locking rod 42a moves to a specific position, the latch extends out of the locking rod 42a and locks. Pressing the button 41 unlocks the locking component. The locking component 42 makes the locking operation more convenient, allowing users to quickly lock and unlock without complicated operations. The latch automatically engages when the locking rod 42a reaches the designated position, ensuring the reliability and stability of the locking and effectively preventing the locking rod 42a from accidentally loosening due to external force or vibration.

[0046] In some embodiments of this utility model, the plumb bob 3 and the positioning block 21 are connected by ball bearings. The ball bearing connection allows the plumb bob 3 to swing more smoothly and stably around the positioning block 21. The ball bearing design significantly reduces frictional resistance at the connection point, ensuring sensitive response of the plumb bob 3 even with minute angle changes, providing more accurate measurement direction. Simultaneously, the ball bearing can withstand long-term use and wear caused by external vibrations, extending the device's lifespan and maintaining measurement stability and reliability in complex environments, thereby improving the overall performance of the measuring instrument.

[0047] In some embodiments of this invention, the housing 1 has a shock-absorbing pad on the side with the magnet 5. This effectively absorbs and mitigates vibrations and impacts from the outside, preventing vibrations from the housing 1 directly contacting the vehicle body surface from being transmitted to the internal components, maintaining the stability of the measuring instrument. The shock-absorbing pad design not only protects the internal protractor 2 and plumb bob 3 from vibration interference, improving measurement accuracy, but also reduces wear and tear on the structure caused by long-term vibration, extending the service life of the device.

[0048] In some embodiments of this utility model, the housing 1 is a sealed structure. The housing 1 is designed as a sealed structure to effectively prevent dust, moisture and other external pollutants from entering the device, protecting precision components such as the protractor 2 and the plumb bob 3 from environmental factors, thereby maintaining measurement accuracy.

[0049] In some embodiments of this utility model, the housing 1 is made of acrylic material. Acrylic material has excellent transparency, allowing operators to clearly observe the working status of the protractor 2 and the plumb bob 3, facilitating real-time reading of angle data. Acrylic material is not only lightweight but also has strong impact resistance and weather resistance, capable of withstanding collisions and wear at the construction site, ensuring the stability and durability of the device in outdoor environments. In addition, acrylic material is easy to process and maintain, helping to reduce production costs.

[0050] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A lifting angle measuring instrument for a drop truck with a pendulum-type lifting mechanism, characterized in that, include: The housing is made of transparent material and has through holes. A protractor is rotatably connected inside the housing about a center point. The protractor also has a positioning block at its center and a gravity block fixed at 90 degrees around its perimeter. The plumb bob is rotatably connected to the positioning block. In its initial position, the plumb bob points at 90 degrees to the protractor. The locking mechanism includes a button passing through the through hole, a locking component fixedly connected to the button and disposed inside the housing, wherein when the locking component is in the initial position, the locking component is away from the protractor, and when the locking component is locked, it abuts against the protractor. A magnet is fixedly installed on the side of the housing adjacent to the protractor.

2. The lifting angle measuring instrument for a dump truck with a suspended weight as described in claim 1, characterized in that, The locking assembly includes a locking rod fixedly connected to the button. The locking rod is perpendicular to the positioning block and can move relatively closer to or further away from the positioning block. A spring is sleeved between the locking rod and the housing. The locking rod also has a locking component.

3. The lifting angle measuring instrument for a dump truck with a suspended hammer as described in claim 2, characterized in that, The positioning block also has a circular groove, and the locking rod has a frustum-shaped structure. The area of ​​the first end face near the circular groove is smaller than the area of ​​the second end face near the button, and the diameter of the circular groove is slightly larger than the first end face.

4. The lifting angle measuring instrument for a dump truck with a suspended hammer as described in claim 3, characterized in that, The first end face also has an anti-slip plate, and when the locking rod approaches the positioning block, the anti-slip plate abuts against the positioning block.

5. The lifting angle measuring instrument for a dump truck with a suspended weight as described in claim 2, characterized in that, The locking rod also has a guide assembly, including a guide rib protruding from the locking rod and a guide groove formed at the through hole and disposed opposite to the guide rib. The guide rib extends in the same direction as the locking rod.

6. The lifting angle measuring instrument for a dump truck with a suspended hammer as described in claim 2, characterized in that, The locking assembly includes a latch disposed on the locking lever, the latch being perpendicular to the extension direction of the locking lever. The latch extends out of the locking lever and locks when the locking lever moves to a specific position, and is unlocked by pressing the button.

7. The lifting angle measuring instrument for a dump truck with a suspended hammer as described in claim 1, characterized in that, The hammer and the positioning block are connected by ball bearings.

8. The lifting angle measuring instrument for a dump truck with a suspended hammer as described in claim 1, characterized in that, The housing also has a shock-absorbing pad on the side with the magnet.

9. The lifting angle measuring instrument for a dump truck with a suspended weight as described in claim 1, characterized in that, The housing is a sealed structure.

10. The lifting angle measuring instrument for a dump truck with a suspended weight as described in claim 1, characterized in that, The shell is made of acrylic.

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