Position detection block, crane boom, and work machine

Abstract

This invention provides a position detection block that reduces the number of protruding structures on its surface, thereby mitigating the risk of cables getting caught and disconnected when the position detection block is in use, and improving safety during use. [Solution] The position detection block 2 includes a base 201 and at least one sensing member 202, the sensing member including a sensing body 2021 and an embedded rib 2022, the embedded rib being provided on the sensing body and fitted into the base. By fitting and fixing the embedded rib into the base, the sensing member and the base are tightly coupled, improving the seismic performance of the position detection block and reducing the risk of the sensing member falling off during operation. On the other hand, since bolt fasteners are not required to fix the sensing member, the surface of the position detection block is flat and free of protrusions, reducing the risk of the position detection block snagging cables during use.

Description

Technical Field

[0001] The present invention relates to the field of position detection technology, and more specifically, to a position detection block, a crane boom, and a working machine.

Background Art

[0002] The position detection block is used in combination with a sensor to identify the relative positional relationship between two members that move relative to each other. The position detection block generally realizes sensing by a metal sensing member, and the metal sensing member is attached to the base of the position detection block by a bolt fastener.

[0003] Taking the crane boom as an example, the crane boom drives each boom segment to move telescopically by a telescopic cylinder. The position detection block is generally provided on the boom segment, and the sensor is correspondingly provided on the telescopic cylinder. The sensor determines the corresponding relationship between the telescopic cylinder and each boom segment by detecting the position detection block. By changing the attachment position of the metal sensing member, different boom segments can also be distinguished using the position detection block.

[0004] The crane boom needs to operate stably under various working conditions and is affected by the operation of the telescopic cylinder and the harsh external environment. Therefore, vibrations that cannot be avoided occur in the boom segment, and after a long-term operation, the bolt fastener is likely to loosen and fall off, causing a failure of the crane boom.

[0005] To facilitate the prevention of bolt loosening and the simplification of the structural design of the metal sensing member, in the related art, it is common to use a non-flanged bolt to fix the metal sensing member. At this time, since the bolt head protrudes, in the process of relative movement between the boom segment and the telescopic cylinder, the cables inside the crane boom (for example, length sensor tension wires and electrical wiring) are likely to be caught by the bolt and there is a risk of disconnection.

Summary of the Invention

[0006] In view of this, the present invention provides a position detection block, a crane boom, and a work machine to solve the problem of the position detection block easily causing the cable to break. [Means for solving the problem]

[0007] In a first embodiment, the present invention provides a position detection block comprising a base and at least one sensing member, wherein the sensing member comprises a sensing body and an embedded rib, the embedded rib being provided on the sensing body and fitted into the base.

[0008] The beneficial effects are as follows: Because the sensing member has embedded ribs, it can be connected to the base by embedded connections. On the one hand, as the embedded ribs are fitted and fixed into the base, the sensing member and the base are tightly connected, improving the seismic performance of the position detection block and reducing the risk of the sensing member falling off during operation. On the other hand, since bolt fasteners are not required to fix the sensing member, the surface of the position detection block is flat and free of protrusions, which reduces the risk of the position detection block snagging cables during use, making the position detection block less likely to cause cable breakage.

[0009] In one selectable embodiment, the outer contour of the embedded rib is provided with a concave structure for engaging with the base.

[0010] The beneficial effects are as follows: During the manufacturing process, a portion of the base can engage with the concave structure, causing the base and the embedded rib to engage and become one unit. This results in a tighter bond between the sensing member and the base, further reducing the risk of the sensing member falling off during operation.

[0011] In one selectable embodiment, the sensing member includes a plurality of the embedded ribs, each of which is spaced apart on the sensing body.

[0012] The beneficial effects are as follows: By providing multiple embedded ribs, multiple connection points are formed between the sensing member and the base, increasing the connection strength between the sensing member and the base, and further reducing the risk of the sensing member falling off during operation.

[0013] In one selectable embodiment, the sensing member is integrally molded with the base, and the embedded rib further includes a first connection hole, the first connection hole being used to position the sensing member during integral molding.

[0014] The beneficial effects are as follows: On the one hand, integral molding increases the bonding strength between the sensing member and the base, further improving the seismic performance of the position detection block and reducing the risk of the sensing member falling off during operation. On the other hand, during integral molding, the sensing member is first placed in the set position, and then the base is generated around the sensing member, so that the base and the sensing member are bonded together and become one unit. By providing a first connection hole, the sensing member can be accurately positioned and fixed, thereby ensuring the accuracy of the positional relationship between the sensing member and the base. At the same time, because there are multiple embedded ribs, the multiple first connection holes form multiple positioning points, thereby allowing the sensing member to be positioned and fixed more accurately.

[0015] In one selectable embodiment, the first connection holes of at least some of the embedded ribs are coaxially arranged.

[0016] The beneficial effects are as follows: By adopting a coaxial arrangement method, multiple first connection holes can be connected and positioned simultaneously with a single connection pin during integral molding, making positioning easier and increasing the production efficiency of the position detection block.

[0017] In one selectable embodiment, the embedded rib is welded to the sensing body.

[0018] The beneficial effects are as follows: The embedded ribs and sensing body are individually fabricated and then welded together as a single unit. Because the shapes of the embedded ribs and sensing body are simple, it contributes to reducing the processing steps, thereby simplifying the manufacturing flow of the sensing component and improving manufacturing efficiency.

[0019] In one selectable embodiment, the base includes a recessed groove, the sensing body is positioned within the recessed groove, and the depth of the recessed groove is greater than or equal to the thickness of the sensing body.

[0020] The beneficial effects are as follows: Because the sensor unit is hidden within a recessed groove, the risk of the exposed sensor unit snagging or damaging the cable is reduced.

[0021] In one selectable embodiment, the base includes a second connecting hole, the second connecting hole being a stepped hole, and is used to secure and mount the base by providing a countersunk bolt.

[0022] The beneficial effects are as follows: Because the base is attached with countersunk bolts, the protrusions on the surface of the position detection block are further reduced, mitigating the risk of cables getting caught on the position detection block during relative movement between the structure on which the position detection block is located and the structure on which the sensor is located, thereby improving the safety of using the position detection block.

[0023] In a second embodiment, the present invention further provides a crane boom comprising a plurality of boom segments and an extension cylinder, wherein each boom segment is arranged to fit together sequentially, each boom segment is provided with a position detection block according to the present invention, and the extension cylinder is inserted into the boom segments and used to drive and extend the boom segments, and the extension cylinder is provided with a sensor for detecting the position detection block.

[0024] The beneficial effects are as follows. Since the crane boom according to the present invention includes the position detection block according to the present invention, it correspondingly has the beneficial effects brought by the position detection block, which will not be repeatedly described herein.

[0025] In a third aspect, the present invention further provides a working machine including a chassis and the crane boom according to the present invention, wherein the crane boom is provided on the chassis or includes the position detection block according to the present invention.

[0026] The beneficial effects are as follows. Since the working machine according to the present invention includes the position detection block according to the present invention, it correspondingly has the beneficial effects brought by the position detection block, which will not be repeatedly described herein.

Brief Description of the Drawings

[0027] To more clearly explain the specific embodiments of the present invention or the technical solutions in the prior art, the drawings that need to be used in the following description of the specific embodiments or the prior art are briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative labor.

[0028] [Figure 1] It is a schematic diagram of the side cross-sectional structure of the position detection block according to an embodiment of the present invention. [Figure 2] It is a schematic diagram of the upper surface structure of the position detection block according to an embodiment of the present invention. [Figure 3] It is a schematic diagram of the rear cross-sectional structure of the crane boom according to an embodiment of the present invention. [Figure 4] It is a partial enlarged view of region A in FIG. 3, showing the mutual correspondence relationship between the sensor and the position detection block. [Figure 5] It is a schematic diagram of the side cross-sectional structure of the crane boom according to an embodiment of the present invention. [Figure 6]This is a schematic diagram of the side structure of the sensing body according to an embodiment of the present invention. [Figure 7] This is a schematic diagram of the rear cross-sectional structure of the sensing body according to an embodiment of the present invention. [Figure 8] This is a schematic diagram of the front structure of a position detection block according to an embodiment of the present invention. [Modes for carrying out the invention]

[0029] To clarify the purpose, technical concept, and advantages of the embodiments of this invention, the technical concept of the embodiments of this application will be clearly and completely described below with reference to the drawings of the embodiments of this invention. Clearly, the embodiments described are not all embodiments, but only some embodiments of this invention. All other embodiments that a person skilled in the art could obtain without creative work based on the embodiments of this invention are within the scope of protection of this invention.

[0030] It should be understood that the terms used herein are for the purpose of describing specific exemplary embodiments and are not intended to be limiting. Unless otherwise explicitly stated in the context, the singular "one" and "one" as used in this invention may also include the plural. The terms "equip," "include," and "have" are inclusive and thus clearly indicate the presence of the described features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0031] In this invention, terms such as "first," "second," etc., may be used to describe multiple elements, members, regions, layers, and / or segments, but these elements, members, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, member, region, layer, or segment from another region, layer, or segment. Unless explicitly indicated in the context, terms such as "first," "second," etc., and other numerical terms, when used in this invention, do not imply order or rank. Furthermore, in the description of this application, unless otherwise explicitly stated or limited, the terms "provide" and "connect" should be understood in a broad sense, for example, they may be fixed connections, removable or integral connections, direct connections, or indirect connections via an intermediate medium. Those skilled in the art will be able to understand the specific meaning of the above terms in this application depending on the specific situation.

[0032] For the sake of clarity, the relationship between one illustrated element or feature and another element or feature may be described herein using spatial relational terms, such as “end,” “length,” “inside,” and “outside.” Such spatial relational terms are intended to include different orientations of the mechanism in use or operation, in addition to the orientation depicted in the figure. For example, if the mechanism in the figure is inverted, an element described as “below the other element or feature” or “below the other element or feature” would then be oriented as “above the other element or feature” or “above the other element or feature.” Thus, the example term “below ...” may include orientations of being above ... and orientations of being below .... The mechanism may be oriented separately (90-degree rotation or other orientations), and the spatial relational descriptors used herein shall be interpreted accordingly.

[0033] A position detection block, used in combination with a sensor to position two relatively moving members, typically consists of two parts: a base mounted on the member and a sensing member mounted on the base. The sensing member is fixed to the base by bolt fasteners. Members such as crane booms are subject to unavoidable vibrations when they extend and retract, and bolt fasteners are prone to loosening and falling off after prolonged operation.

[0034] In some related technologies, by fixing the sensing member using non-countersunk bolts (e.g., internal hex socket head cylindrical head bolts or external hex bolts), an elastic washer for preventing loosening can be easily provided between the bolt head and the sensing member. In this case, the sensing member does not need to be machined with a recessed groove and may be manufactured by cutting it directly from a thin metal plate. Such a connection method can help prevent bolt loosening while also simplifying the manufacturing process of the position detection block.

[0035] However, because the bolt head protrudes at this time, during the relative movement process between the two members, cables exposed to the outside between the members (e.g., length sensor tension wires, electrical wiring, etc.) are prone to getting caught on the bolt and are at risk of being severed.

[0036] An embodiment of the present invention will be described below with reference to Figures 1 to 8.

[0037] Referring to Figures 1, 2, 3, 4, and 5, according to one embodiment of the present invention, a position detection block 2 is provided, comprising a base 201 and at least one sensing member 202, wherein the sensing member 202 comprises a sensing body 2021 and an embedded rib 2022, the embedded rib 2022 is provided on the sensing body 2021 and fitted into the base 201.

[0038] Referring to Figures 3, 4, and 5, the method of using the position detection block 2 will be introduced using a crane boom as an example. Here, the crane boom includes a plurality of boom segments 1 and a telescopic cylinder 3. Each boom segment 1 is fitted together sequentially, and a position detection block 2 is provided on each boom segment 1. The telescopic cylinder 3 is inserted into the boom segment 1 and is used to drive and extend the boom segment 1. A sensor 4 for detecting the position detection block 2 is provided on the telescopic cylinder 3.

[0039] Each boom segment 1 is sequentially fitted together from the inside out to form a single unit. During the operation of the crane boom, the telescopic cylinder 3 first connects to and locks the boom segment 1 in the inner layer, then drives the boom segment 1 to move along the axis of the crane boom, thereby extending and retracting the crane boom. After the current boom segment 1 has extended to a set length, the telescopic cylinder 3 is released from the current boom segment 1, retracts, connects to and locks another boom segment 1, and then drives the next boom segment 1 to move along the axis of the crane boom. During the switching process to another boom segment 1, the telescopic cylinder 3 detects the sensing member 202 by the sensor 4, thereby determining its relative position to the boom segment 1 and accurately locking the boom segment 1.

[0040] Since the sensing member 202 has an embedded rib 2022, it can be connected to the base 201 by an embedded connection. On the one hand, as the embedded rib 2022 is fitted and fixed into the base 201, the sensing member 202 and the base 201 are tightly connected, improving the seismic performance of the position detection block 2 and reducing the risk of the sensing member 202 falling off during operation. On the other hand, since bolt fasteners are not required to fix the sensing member 202, the surface of the position detection block 2 is flat and free of protrusions, which reduces the risk of the position detection block 2 snagging cables during use, making it less likely for the position detection block 2 to break cables and improving the safety of use of the position detection block 2.

[0041] Continuing to refer to Figures 3, 4, and 5, in some embodiments, multiple position detection blocks 2 can be provided on a single boom segment 1, thereby performing cross-verification of the relative positional relationship between the telescopic cylinder 3 and the boom segment 1, and further improving the reliability of positioning.

[0042] Furthermore, a single base 201 may have multiple mounting positions for the sensing members 202. By selectively providing the sensing members 202 at these mounting positions and varying the arrangement of the sensing members 202 on each boom segment 1, the boom segment 1 currently located on the telescopic cylinder 3 can be determined by the sensing signal between the sensor 4 and the sensing members 202. Referring to Figure 5, the outermost boom segment 1 does not necessarily need to have a position detection block 2; it is sufficient for the boom segment 1 that needs to be connected to the telescopic cylinder 3 and extend / retract to have a position detection block 2.

[0043] In addition to the crane boom shown in Figures 3, 4, and 5, the position detection block 2 of this invention is also applicable to other devices that require the positioning of components, and is effective in preventing cables from getting caught and even disconnected. For example, the position detection block 2 may be installed on a track to prevent it from getting caught on the cable of a cable pull detection trolley traveling on the track, and other applicable usage scenarios will not be described again here.

[0044] To ensure understanding, the interlocking connection between the embedded rib 2022 and the base 201 may be implemented in multiple ways. For example, the holes in the embedded rib 2022 and the base 201 may employ a crimping fit, thereby interlocking and securing the embedded rib 2022 to the base 201. Alternatively, the embedded rib 2022 may be interlocked and secured to the base 201 by means of adhesive bonding, integral molding, etc. Other possible implementations will not be repeated here.

[0045] The sensing member 202 can be in the form of a sheet, a block, or any other shape suitable for detection by the sensor 4, and can be selected accordingly. For example, the sensing member 202 can be in the form of a sheet. On the one hand, a sheet-shaped sensing member 202 has a thin thickness and can be obtained by cutting and processing from a plate of the same thickness, making it easy to manufacture. On the other hand, the sensing member 202 maintains a large surface area in the direction toward the sensor 4, making it suitable for detection by the sensor 4.

[0046] In order to enhance the coupling effect between the sensing member 202 and the base 201, in some embodiments, the outer contour of the embedded rib 2022 is provided with a concave structure for engaging with the base 201.

[0047] During the manufacturing process, a portion of the base 201 can be fitted into the concave structure, causing the base 201 and the embedded rib 2022 to engage and become one unit. This results in a tighter bond between the sensing member 202 and the base 201, further reducing the risk of the sensing member 202 falling off during operation.

[0048] Illustratively, referring to Figures 1, 6, and 7, the embedded rib 2022 may include a restricting portion 20221, the external size of the restricting portion 20221 gradually increases along the direction away from the sensing body 2021, and a concave structure is formed between the sensing body 2021 and the restricting portion 20221.

[0049] To make it easier to understand, the external dimensions may be at least one of the length and width dimensions, and the change in external dimensions may cause the regulating portion 20221 to protrude outward, forming a concave structure between the sensing body 2021 and the regulating portion 20221. For example, in the embodiment shown in Figures 6 and 7, the length L of the regulating portion 20221 gradually increases toward the far end of the sensing body 2021, while the width W (or the thickness of the embedded rib 2022) is kept constant. This gives the embedded rib 2022 a more standardized external shape and facilitates manufacturing by cutting sheet material (e.g., laser cutting or punching).

[0050] In this invention, a portion of the embedded rib 2022 may be used as the restricting portion 20221, or the entire embedded rib 2022 may be used as the restricting portion 20221. For example, referring to the embodiment shown in Figure 6, the restricting portion 20221 is only a portion of the embedded rib 2022, and the external dimensions of the other parts of the embedded rib 2022 may be flexibly designed according to specific needs.

[0051] In some embodiments, the sensing member 202 may further include a plurality of embedded ribs 2022, each embedded rib 2022 spaced apart on the sensing body 2021. By providing a plurality of embedded ribs 2022, multiple connection points are formed between the sensing member 202 and the base 201, thereby increasing the connection strength between the sensing member 202 and the base 201 and further reducing the risk of the sensing member 202 falling off during operation.

[0052] In some embodiments, the sensing member 202 is integrally molded with the base 201. On the one hand, compared to interlocking or adhesive bonding methods, integral molding increases the bonding strength between the sensing member 202 and the base 201, thereby further improving the seismic performance of the position detection block 2 and reducing the risk of the sensing member 202 falling off during operation. On the other hand, integral molding eliminates the assembly process of the sensing member 202 and the base 201, improving the manufacturing efficiency of the position detection block 2.

[0053] To ensure clarity, the integral molding in this invention may be, and is not limited to, conventional integral molding processes in related technologies such as injection molding and additive manufacturing. In the manufacturing process, the sensing member 202 is first processed, then the sensing member 202 is placed in a predetermined position, and the base 201 is formed around the sensing member 202, thereby integrally joining the sensing member 202 and the base 201.

[0054] In some embodiments, the base 201 is made of a plastic material (e.g., nylon), and the sensing member 202 is made of a metal material. In this case, the base 201 can be integrally molded with the sensing member 202 by injection molding, the plastic material has low hardness and is not easily scratched or damaged by the cable, and the plastic material has a certain elasticity which improves the seismic resistance of the position detection block 2.

[0055] In some embodiments, the embedded rib 2022 further includes a first connecting hole 20222, which is used to position the sensing member 202 during integral molding.

[0056] During integral molding, the sensing member 202 is first positioned at a set location, and then the base 201 is generated around the sensing member 202. This causes the base 201 and the sensing member 202 to join together as a single unit. By providing the first connection hole 20222, the sensing member 202 can be precisely positioned and fixed, thereby ensuring the accuracy of the positional relationship between the sensing member 202 and the base 201.

[0057] Taking injection molding as an example, first the sensing member 202 needs to be processed, then the sensing member 202 is placed in the mold, the first connection hole 20222 is positioned with a connecting pin to fix the sensing member 202, then the mold is closed and plastic is injected, the plastic is solidified in the mold cavity to form the base 201, and finally the mold is opened and the connecting pin is removed, and the required position detection block 2 is obtained by post-processing. During the solidification process, the sensing member 202 can stably maintain its own position by the connecting pin, avoiding positional displacement due to internal stress and ensuring that the sensing member 202 is placed in the correct position after molding.

[0058] Furthermore, the embedded rib 2022 may include multiple first connection holes 20222. For example, multiple first connection holes 20222 may be simultaneously provided in one embedded rib 2022, or one connection hole 20222 may be provided in each of the multiple embedded ribs 2022. Since the multiple first connection holes 20222 form multiple positioning points, the sensing member 202 can be positioned and fixed more accurately.

[0059] In some embodiments, the first connection holes 20222 of at least some of the embedded ribs 2022 are provided coaxially. By adopting a coaxial arrangement, multiple first connection holes 20222 can be connected and positioned simultaneously with a single connection pin during integral molding, making positioning easier and increasing the manufacturing efficiency of the position detection block 2.

[0060] In some embodiments, the embedded rib 2022 is welded to the sensing body 2021. The embedded rib 2022 and the sensing body 2021 are fabricated separately and then welded together as a single unit. Because the shapes of the embedded rib 2022 and the sensing body 2021 are simple, this contributes to reducing the fabrication process, thereby simplifying the manufacturing flow of the sensing member 202 and improving manufacturing efficiency.

[0061] The embedded rib 2022 and the sensing body 2021 may be manufactured by bending rather than welding, but in this case, the embedded rib 2022 can only be provided on the edge of the sensing body 2021, which limits the design of the sensing member 202.

[0062] In some embodiments, referring to Figures 1, 4, and 8, the base 201 includes a recessed groove, and the sensing body 2021 is positioned within the recessed groove, with the depth of the recessed groove being greater than or equal to the thickness of the sensing body 2021. Because the sensing body 2021 is concealed within the recessed groove, the risk of the exposed sensing body 2021 scratching or damaging cables is reduced by using the base 201 to shield the sharp edges of the sensing body 2021.

[0063] In some embodiments, referring to Figures 1 and 2, the base 201 includes a second connection hole 2011, which is a stepped hole and is used to connect the base 201 and the boom segment 1 by providing a countersunk bolt. Because the base 201 is attached to the boom segment 1 by the countersunk bolt, the protrusions on the surface of the position detection block 2 are further reduced, mitigating the risk of the cables inside the crane boom getting caught on the position detection block 2 during the relative movement process of the boom segment 1 and the telescopic cylinder 3, thereby improving the operational safety of the crane boom.

[0064] In some embodiments, referring to Figure 8, the base 201 further includes a guide slope 2012, which is located in front of the base 201 and at both ends in the direction extending to the boom segment 1 of the base 201. The guide slope 2012 can guide cables that get caught on the base 201 and detach them from the base 201, further reducing the risk of cables getting caught on the position detection block 2 and being disconnected.

[0065] According to an embodiment of the present invention, in a second embodiment, a crane boom is provided which includes a plurality of boom segments and an extendable cylinder 3, wherein each boom segment 1 is fitted sequentially, the boom segment 1 is provided with a position detection block 2 of the present invention, the extendable cylinder 3 is inserted into the boom segment 1 and used to drive and extend the boom segment 1, and the extendable cylinder 3 is provided with a sensor 4 for detecting the position detection block 2.

[0066] The crane boom includes position detection block 2, and therefore has beneficial effects brought about by position detection block 2, which will not be explained again here.

[0067] According to an embodiment of the present invention, in a third embodiment, a work machine is provided which includes a chassis and a crane boom of the present invention, wherein the crane boom is mounted on the chassis, or which includes a position detection block 2 of the present invention.

[0068] The crane boom extends and retracts based on the chassis to perform lifting operations, and since the work machine includes the crane boom, it has corresponding beneficial effects brought about by the crane boom, which will not be explained again here.

[0069] To make it clear, a chassis can be installed on various transport equipment and give mobility to a work machine. For example, the chassis may be installed on a vehicle frame, in which case the work machine is a crane, or the chassis may be installed on the deck of a ship, in which case the work machine is a crane ship. Of course, the work machine may also be fixed in place. For example, the chassis may be fixed to a work site such as a dock. This invention does not limit the specific form of the work machine or the application scenario.

[0070] The work machine does not necessarily have to include a chassis and a crane boom; if there are two members that move relative to the work machine and a cable exists between the members, it can include the position detection block 2 of this invention, and there are corresponding beneficial effects brought to the position detection block 2, which will not be explained again here.

[0071] While embodiments of the present invention have been described with reference to the drawings, those skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention, all of which are included in the attached utility model claims. [Explanation of symbols]

[0072] 1: Boom Segment 2: Position detection block 201: Bass 2011: Second connection hole 2012: Guide Slope 202: Sensing component 2021: Sensor Unit 2022: Embedded Ribs 20221: Regulatory Department 20222: First connection hole 3: Telescopic cylinder 4: Sensor

Claims

1. A position detection block, Base (201) and, A position detection block characterized by comprising at least one sensing member (202), the sensing member (202) including a sensing body (2021) and an embedded rib (2022), the embedded rib (2022) being provided on the sensing body (2021) and fitted into the base (201), and the position detection block.

2. The position detection block according to claim 1, characterized in that the outer contour of the embedded rib (2022) is provided with a concave structure for engaging with the base (201).

3. The position detection block according to claim 1, characterized in that the sensing member (202) includes a plurality of the embedded ribs (2022), and each of the embedded ribs (2022) is provided on the sensing body (2021) at intervals.

4. The position detection block according to claim 3, characterized in that the sensing member (202) is integrally molded with the base (201), the embedded rib (2022) further includes a first connection hole (20222), and the first connection hole (20222) is used to position the sensing member (202) during integral molding.

5. The position detection block according to claim 4, characterized in that at least some of the first connection holes (20222) of the embedded ribs (2022) are provided coaxially.

6. The position detection block according to claim 1, characterized in that the embedded rib (2022) is welded to the sensing body (2021).

7. The position detection block according to claim 1, characterized in that the base (201) includes a recessed groove, the sensing body (2021) is disposed within the recessed groove, and the depth of the recessed groove is greater than or equal to the thickness of the sensing body (2021).

8. The position detection block according to claim 1, characterized in that the base (201) includes a second connection hole (2011), the second connection hole (2011) being a stepped hole, and used to fix and attach the base (201) by providing a countersunk bolt.

9. It's a crane boom, A plurality of boom segments, wherein each boom segment (1) is arranged to fit together sequentially, and each boom segment (1) is provided with a position detection block (2) according to any one of claims 1 to 8, A crane boom characterized by including a telescopic cylinder (3) inserted into the boom segment (1) and used to drive and extend the boom segment (1), wherein the telescopic cylinder (3) is provided with a sensor (4) for detecting the position detection block (2).

10. It is a work machine, A chassis, and a crane boom according to claim 9 provided on the chassis, Alternatively, a work machine characterized by including a position detection block as described in any one of claims 1 to 8.

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