Cross sorting machine and trolley pitch detection method

Abstract

The embodiment of the invention discloses a cross sorting machine and a trolley pitch detection method. According to one specific embodiment, the cross sorting machine comprises a first detection mechanism and a second detection mechanism which are fixed to a trolley guide rail in the using process, and the first detection mechanism comprises a distance measuring mechanism used for measuring the distance between the first detection mechanism and the second detection mechanism; if any one of the multiple sections of sorting trolleys passes through the first detection mechanism, the first detection mechanism is triggered, and if any one of the multiple sections of sorting trolleys passes through the second detection mechanism, the second detection mechanism is triggered. The implementation mode is related to intelligent equipment, and automatic detection of the pitch of the trolley is achieved.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to the field of warehousing and logistics, and specifically to a cross sorter and a trolley pitch detection method. Background Art

[0002] With the rapid development of e-commerce, express delivery and other industries, the demand for sorting equipment has increased dramatically. Automatic sorting equipment, such as cross-belt sorters, is composed of small carts. The distance between adjacent carts, that is, the pitch of the carts, is generally measured manually with a ruler.

[0003] However, the inventors have found that when the above method is used to measure the trolley pitch, the following technical problems often occur:

[0004] Manual measurement is time-consuming and labor-intensive and has large errors. When the error exceeds a certain value, it will affect the accuracy of sorting.

[0005] The above information disclosed in this Background section is only for enhancement of understanding of the background of the inventive concept and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art. Summary of the invention

[0006] The content of this disclosure is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this disclosure is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0007] Some embodiments of the present disclosure propose a cross sorter and a trolley pitch detection method to solve one or more of the technical problems mentioned in the above background technology section.

[0008] In a first aspect, some embodiments of the present disclosure propose a cross sorting machine, comprising a trolley guide rail and a multi-section sorting trolley running on the trolley guide rail, characterized in that the cross sorting machine also includes a trolley pitch detection mechanism, the trolley pitch detection mechanism includes: a first detection mechanism and a second detection mechanism respectively fixed to the trolley guide rail when in use, the first detection mechanism includes a distance measuring mechanism for measuring the distance between the first detection mechanism and the second detection mechanism; if any sorting trolley among the multi-section sorting trolleys passes through the first detection mechanism, the first detection mechanism is triggered, and if any sorting trolley among the multi-section sorting trolleys passes through the second detection mechanism, the second detection mechanism is triggered.

[0009] Optionally, a through hole is provided on the protrusion under any sorting cart, and the first detection mechanism and / or the second detection mechanism include a photoelectric sensor, and the emitter and receiver of the photoelectric sensor light are respectively arranged on both sides of the protrusion; when any sorting cart passes through the first detection mechanism, the signal emitted by the transmitter of the first detection mechanism passes through the through hole to reach the corresponding receiver so that the first detection mechanism is triggered; when any sorting cart passes through the second detection mechanism, the signal emitted by the transmitter of the second detection mechanism passes through the through hole to reach the corresponding receiver so that the second detection mechanism is triggered.

[0010] Optionally, the protruding portion is a secondary plate, which is used to cooperate with the motor to provide power for the multi-section sorting trolley.

[0011] Optionally, the distance measuring mechanism includes a distance measuring sensor, and the second detection mechanism also includes a distance measuring piece, and the distance measuring sensor and the distance measuring piece cooperate to measure the distance between the first detection mechanism and the second detection mechanism.

[0012] Optionally, the second detection mechanism further includes a fine-tuning mechanism and a fixed base, the fixed base is used to fix the second detection mechanism to the trolley guide rail, and the fine-tuning mechanism is used to adjust the position of the ranging piece and the photoelectric sensor included in the second detection mechanism relative to the fixed base.

[0013] Optionally, the fine-tuning mechanism includes: a lead screw and a shaft arranged parallel to a fixed base, and a wrench fixed to the lead screw, the lead screw and the shaft pass through a fixed plate respectively, and the ranging piece and the photoelectric sensor included in the second detection mechanism are rotationally connected to the lead screw bolt through the fixed plate. When the lead screw rotates driven by the wrench, the fixed plate drives the ranging piece and the photoelectric sensor included in the second detection mechanism to move axially on the shaft.

[0014] In a second aspect, some embodiments of the present disclosure propose a method for detecting a trolley pitch, which is applied to the cross-sorting machine described in the various embodiments of the first aspect, wherein the distance between the first detection mechanism and the second detection mechanism is a standard distance, and the standard distance is the sum of the lengths of a first number of sorting trolleys and a second number of standard pitches. The method comprises: in response to simultaneously receiving trigger signals from the first detection mechanism and the second detection mechanism, outputting verification success information, wherein the verification success information indicates that the actual pitch of the sorting trolley currently being detected meets the requirements.

[0015] Optionally, the above method also includes: in response to receiving a trigger signal from the first detection mechanism and not receiving a trigger signal from the second detection mechanism at the same time, outputting verification failure information and the number of the sorting trolley currently being detected, wherein the verification failure information indicates that the actual pitch of the sorting trolley currently being detected does not meet the requirements.

[0016] Optionally, the above method also includes: in response to receiving a trigger signal from the first detection mechanism and not receiving a trigger signal from the second detection mechanism at the same time, adjusting the distance between the first detection mechanism and the second detection mechanism so that the first detection mechanism and the second detection mechanism are triggered at the same time; determining the actual pitch of the sorting cart currently being detected by the distance measured by the distance measuring mechanism.

[0017] The above-mentioned embodiments of the present disclosure have the following beneficial effects: a cross sorting machine is provided, which can automatically detect the pitch of the trolley. Specifically, when the first detection mechanism and the second detection mechanism are both triggered, the distance between the first detection mechanism and the second detection mechanism is the total length of a certain number of trolleys and the actual pitch. On this basis, according to actual needs, the pitch can be measured or verified, wherein, due to the inclusion of a distance measuring mechanism, automatic and accurate measurement can be achieved compared to manual measurement, thereby improving the accuracy of sorting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that components and elements are not necessarily drawn to scale.

[0019] Figure 1 is a schematic structural diagram of a cross sorter according to some embodiments of the present disclosure;

[0020] Figure 2 An exemplary structural schematic diagram of a sorting trolley among multiple sorting trolleys is shown;

[0021] Figure 3 and Figure 4 An exemplary installation diagram of a first detection mechanism is shown;

[0022] Figure 5 A diagram showing a second detection mechanism in use;

[0023] Figure 6 shows a schematic diagram of the installation of the second detection mechanism;

[0024] Figure 7 An exemplary structural schematic diagram of a second detection mechanism is shown;

[0025] Figure 8 is a flow chart of a method for detecting a trolley pitch according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0026] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0027] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0028] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0029] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0030] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0031] Figure 1 This is a usage status diagram of the trolley pitch detection mechanism according to some embodiments of the present disclosure.

[0032] like Figure 1 As shown, the cross sorting machine includes a trolley rail 104 and a multi-section sorting trolley 103 running on the trolley rail. The first detection mechanism 101 and the second detection mechanism 102 are respectively fixed at A and B of the trolley rail 104, and a certain distance is separated between the first detection mechanism 101 and the second detection mechanism 102. The first detection mechanism 101 includes a distance measuring mechanism for measuring the distance between the first detection mechanism 101 and the second detection mechanism 102. Among them, the distance measuring mechanism can be various distance measuring sensors, including but not limited to ultrasonic distance measuring sensors, laser distance measuring sensors, infrared distance measuring sensors, etc. The distance measuring mechanism can transmit a signal in the direction of the second detection mechanism through a transmitter, and determine the distance between the first detection mechanism 101 and the second detection mechanism 102 by the time from the emission to the return. Thereby, automatic and accurate measurement can be achieved, thereby improving the accuracy of sorting. Optionally, the second detection mechanism 102 also includes a distance measuring piece, and the first distance measuring sensor 101 and the distance measuring piece cooperate to measure the distance between the first detection mechanism 101 and the second detection mechanism 102.

[0033] As required, the first detection mechanism 101 and the second detection mechanism 102 may include various sensors, such as photoelectric sensors or contact sensors, so that they can be triggered when any sorting vehicle passes by. For example, when a contact sensor is used, when a sorting vehicle passes by, the body of the sorting vehicle contacts the sensor, so that the contact sensor can detect the vehicle passing by, and the contact sensor is triggered. When a photoelectric sensor is used, it can be a laser sensor, an infrared sensor, etc. At this time, as an example, the photoelectric sensor can detect whether a sorting vehicle passes by by detecting whether the light is blocked.

[0034] In some optional implementations of some embodiments, the first detection mechanism and / or the second detection mechanism includes a photoelectric sensor.

[0035] For example, when an infrared sensor is used, when a sorting trolley passes by, the light is blocked, and the infrared sensor is triggered. However, when the gaps between trolleys pass by, the light is not blocked, and the infrared sensor is not triggered.

[0036] For another example, the photoelectric sensor can also be a laser sensor. In this case, the photoelectric sensor light emitter and receiver are respectively arranged on both sides of the protrusion; when a laser sensor is used, it is necessary to detect the light by installing a receiver on the opposite side, so a through hole is provided on the protrusion under any sorting trolley. Thus, the light can be detected through the through hole. When any sorting trolley passes through the first detection mechanism, the signal emitted by the transmitter of the first detection mechanism passes through the through hole to reach the corresponding receiver so that the first detection mechanism is triggered; when any sorting trolley passes through the second detection mechanism, the signal emitted by the transmitter of the second detection mechanism passes through the through hole to reach the corresponding receiver so that the second detection mechanism is triggered.

[0037] Continue to refer Figure 2 , shows an exemplary structural schematic diagram of a sorting trolley in a multi-section sorting trolley. Among them, a downward protrusion 105 is provided at the bottom of the sorting trolley, and a through hole 106 is provided on the protrusion 105. In practice, the protrusion 105 can also be the sorting trolley body, or it can be an additionally installed component. For example, the protrusion 105 can be a secondary plate, which is vertically fixed under the sorting trolley. The secondary plate is used to cooperate with the motor to provide power for the multi-section sorting trolley. Thereby, the existing component secondary plate can be fully utilized, and there is no need to set up an additional protrusion.

[0038] Continue to refer Figure 3 and Figure 4 , shows a schematic diagram of the installation of the first detection mechanism. As an example, the photoelectric sensor included in the first detection mechanism 101 is a slot-type photoelectric sensor 107, such as Figure 3As shown, the protrusion 105 extends into the groove of the slot-type photoelectric sensor 107, and the transmitter and receiver of the slot-type photoelectric sensor 107 are respectively arranged on both sides of the groove, that is, respectively arranged on both sides of the protrusion 105. In practice, as required, the photoelectric sensor can also be a through-beam photoelectric sensor, a reflector-type photoelectric sensor, etc. It can be understood that when different photoelectric sensors are used, the protrusion under the trolley is set differently. For example, when a reflector-type photoelectric sensor is used, the reflectivity of the protrusion surface needs to meet certain conditions.

[0039] In addition, the size and shape of the protrusion 105 can also be set according to actual needs. For example, it can be in the shape of a long strip, and the signal cannot pass through the area except the through hole. At this time, when the signal emitted by the transmitter of the slot-type photoelectric sensor 107 is aligned with the through hole 106 on the protrusion 105, the receiver can receive the signal, and the first detection mechanism is triggered. When the through hole 106 is not aligned, the receiver cannot receive the signal, and the first detection mechanism will not be triggered. Thus, when any sorting cart passes through the first detection mechanism, specifically, when the through hole of the protrusion below the sorting cart is aligned with the signal of the transmitter, the signal emitted by the transmitter of the first detection mechanism passes through the through hole to reach the corresponding receiver, and the first detection mechanism is triggered. Similarly, when any sorting cart passes through the second detection mechanism, the signal emitted by the transmitter of the second detection mechanism passes through the through hole to reach the corresponding receiver, and the second detection mechanism is triggered.

[0040] In addition, the protrusion 105 can also be in the form of a small piece, that is, only the area directly facing the photoelectric sensor 107 is a solid body through which the signal cannot pass, and the rest of the area is empty. At this time, when the signal emitted by the transmitter of the slot-type photoelectric sensor 107 is aligned with the protrusion 105, the signal received by the receiver is interrupted, and the first detection mechanism is triggered. When the signal emitted by the transmitter of the slot-type photoelectric sensor 107 is not aligned with the protrusion 105, the receiver can receive the signal, and the first detection mechanism is not triggered. The second detection mechanism is the same.

[0041] On this basis, when both the first detection mechanism and the second detection mechanism are triggered, the distance between the first detection mechanism and the second detection mechanism is the total length of a certain number of trolleys and the actual pitch. Further, according to the number of trolley sections between the two detection mechanisms and the above distance measured, the actual pitch of the sorting trolley can be determined based on the known length of the trolley itself.

[0042] In addition, the trolley pitch detection mechanism can be used to verify the trolley pitch. Among them, since the length of the trolley itself is considered to be standard, if the total length meets the requirements, then the pitch between the trolleys also meets the requirements, and vice versa, so that the trolley pitch can be verified. With the operation of the multi-section sorting trolley, it is possible to detect whether each pitch meets the requirements, and identify the car number of the sorting trolley that does not meet the requirements. For example, a counter can be set to count the number of times the first detection mechanism is triggered, thereby determining the car number.

[0043] like Figure 4 As shown, the slot type photoelectric sensor 107 is fixed to the profile 110 via a fixing plate 109. The laser distance sensor 108 is fixed to the profile 110 via a fixing plate 111. The profile 110 is fixed to the trolley guide rail 104 via connecting pieces 112 at both ends.

[0044] The trolley pitch detection mechanism provided in some embodiments of the present disclosure can automatically detect the pitch of the trolley. Specifically, when the first detection mechanism and the second detection mechanism are both triggered, the distance between the first detection mechanism and the second detection mechanism is a certain number of the total lengths of the trolleys. On this basis, according to actual needs, the pitch can be measured or verified, wherein, due to the inclusion of a distance measuring mechanism, automatic and accurate measurement can be achieved compared to manual measurement, thereby improving the accuracy of sorting.

[0045] Although the above embodiments can achieve the technical effects that have been described, the following technical problems still exist during use: when the first detection mechanism has been fixed, if it is necessary to adjust the distance between the first detection mechanism and the second detection mechanism to the target value, the granularity of directly adjusting the position of the second detection mechanism is large. When approaching the target value, directly moving the second detection mechanism can easily make the distance too large or too small, making it difficult to accurately adjust the position of the second detection mechanism.

[0046] Based on this, in an optional implementation of some embodiments of the present disclosure, the second detection mechanism further includes a fine-tuning mechanism to achieve fine-tuning of the distance between the first detection mechanism and the second detection mechanism.

[0047] Continue to refer Figure 5 , shows the use status diagram of the second detection mechanism. Figure 5 As shown, the second detection mechanism 102 is fixed to the trolley guide rail 104 and is separated from the first detection mechanism 101 by a certain distance. Figure 6 , which shows a schematic diagram of the installation of the second detection mechanism. The second detection mechanism 102 is fixed in a similar manner to the first detection mechanism 101, and can be fixed to the profile 113. The profile 113 is fixed to the trolley guide rail 104 through connecting pieces 114 at both ends.

[0048] Figure 7FIG. 2 shows an exemplary structural diagram of the second detection mechanism. Figure 7 As shown, the second detection mechanism also includes a fine-tuning mechanism and a fixed base, and the fixed base is used to fix the second detection mechanism 102 to the trolley guide rail 104. The fine-tuning mechanism is used to adjust the position of the distance measuring piece 116 and the photoelectric sensor 117 (slot-type photoelectric sensor) included in the second detection mechanism relative to the fixed base. For example, the fixed base includes a base plate 115 and a fixed seat 122, and the fixed seat 122 is arranged at both ends of the base plate 115. The fine-tuning mechanism includes: a lead screw 119 and a shaft 118 arranged parallel to the base plate 115 of the fixed base, and a wrench 121 fixed to the lead screw 119, and the lead screw 119 and the shaft 118 pass through the fixed plate 120 respectively and are mounted on the fixed seat 122. The distance measuring piece 116 and the photoelectric sensor 117 included in the second detection mechanism are fixed to the fixed plate 120, and the distance measuring piece 116 and the photoelectric sensor 117 included in the second detection mechanism are fixed to both sides of the fixed plate 120 respectively. The fixing plate 120 is provided with a through hole with a thread for being screwed to the lead screw 119. The fixing plate 120 is provided with a smooth through hole, so that the shaft 118 can pass through the fixing plate 120 through the smooth through hole, and the fixing plate 120 can slide axially on the shaft 118. For example, the lead screw 119 can be connected to the fixing seat 122 through an oil-free bushing 123.

[0049] On this basis, the operator can turn the wrench 121 to drive the lead screw 119 to rotate. When the lead screw 119 rotates driven by the wrench 121, the fixing plate 120 drives the distance measuring piece 116 and the photoelectric sensor 117 included in the second detection mechanism to move axially on the shaft 118. The movement direction of the distance measuring piece 116 and the photoelectric sensor 117 can be controlled by the rotation direction of the wrench 121, thereby realizing the position fine adjustment of the second detection mechanism.

[0050] Continue to refer Figure 8 , shows a process 800 of some embodiments of the trolley pitch detection method according to the present disclosure. The trolley pitch detection method is applied to Figure 1-7 The cross sorting machine described in the corresponding embodiments comprises the following steps:

[0051] Step 801, in response to receiving trigger signals from the first detection mechanism and the second detection mechanism at the same time, outputting verification success information, wherein the verification success information indicates that the actual pitch of the sorting trolley currently being detected meets the requirements.

[0052] In some embodiments, the trolley pitch detection method may be a cross sorter, specifically, a control system of the cross sorter. In practice, the control system may be a control chip or a control server, and the control system may receive the detection signals of the first detection mechanism and the second detection mechanism, obtain the processing results after processing, and output the processing results.

[0053] The distance between the first detection mechanism and the second detection mechanism is a standard distance, and the standard distance is the sum of the lengths of the first number of sorting carts and the second number of standard pitches.

[0054] Step 802, in response to receiving the trigger signal of the first detection mechanism and not receiving the trigger signal of the second detection mechanism at the same time, outputting verification failure information and the number of the sorting trolley currently being detected, the verification failure information indicating that the actual pitch of the sorting trolley currently being detected does not meet the requirements.

[0055] In some embodiments, the currently detected sorting cart may be the latest sorting cart to enter the detection range. For example, the pitches between the sorting carts numbered 1-5 are first detected, and verification success information is output, that is, the actual pitches between the sorting carts numbered 1-5 meet the requirements. After that, the pitches between the sorting carts numbered 2-6 are detected, and verification failure information and the number of the currently detected sorting cart are output. At this time, the number of the currently detected sorting cart is 6.

[0056] Step 803, in response to receiving a trigger signal from the first detection mechanism and not receiving a trigger signal from the second detection mechanism at the same time, adjusting the distance between the first detection mechanism and the second detection mechanism so that the first detection mechanism and the second detection mechanism are triggered at the same time.

[0057] Step 804, determining the actual pitch of the currently detected sorting trolley through the distance measured by the distance measuring mechanism.

[0058] In some embodiments, when a trigger signal from the first detection mechanism is received, but a trigger signal from the second detection mechanism is not received at the same time, it indicates that the pitch of the sorting trolley that has recently entered the detection range does not meet the requirements. On this basis, manual adjustment (adjustment method such as Figure 5-Figure 7 The distance between the first detection mechanism and the second detection mechanism is adjusted by setting a walking mechanism for the second detection mechanism, so that the first detection mechanism and the second detection mechanism are triggered at the same time. On this basis, the actual pitch of the sorting trolley currently being detected can be determined through the distance currently measured by the distance measuring mechanism.

[0059] It can be understood that the above steps 801-803 do not constitute a limitation on the sequence and dependency relationship. In practice, one or more of the above steps 801-803 can occur independently, sequentially, or simultaneously. In contrast, the present disclosure does not make any limitation.

[0060] The method provided by some embodiments of the present disclosure realizes the calibration of the trolley pitch through the trigger signals of the first detection mechanism and the second detection mechanism, and determines the actual pitch of the sorting trolley when it does not meet the requirements, thereby realizing automatic calibration and measurement of the trolley pitch, avoiding manual measurement, and helping to improve the accuracy of sorting.

[0061] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. A cross sorting machine, comprising a trolley guide rail and a multi-section sorting trolley running on the trolley guide rail, characterized in that: The cross sorter further comprises a trolley pitch detection mechanism, and the trolley pitch detection mechanism comprises: A first detection mechanism and a second detection mechanism respectively fixed to the guide rail of the trolley when in use, wherein the first detection mechanism comprises a distance measuring mechanism for measuring the distance between the first detection mechanism and the second detection mechanism; If any of the multiple sorting carts passes through the first detection mechanism, the first detection mechanism is triggered; if any of the multiple sorting carts passes through the second detection mechanism, the second detection mechanism is triggered.

2. The trolley pitch detection mechanism according to claim 1, characterized in that: A through hole is provided on the protrusion below any sorting trolley, the first detection mechanism and / or the second detection mechanism comprises a photoelectric sensor, and a transmitter and a receiver of the photoelectric sensor light are respectively provided on both sides of the protrusion; When any sorting vehicle passes through the first detection mechanism, the signal emitted by the transmitter of the first detection mechanism passes through the through hole and reaches the corresponding receiver so that the first detection mechanism is triggered; When any sorting trolley passes through the second detection mechanism, the signal emitted by the transmitter of the second detection mechanism passes through the through hole and reaches the corresponding receiver so that the second detection mechanism is triggered.

3. The trolley pitch detection mechanism according to claim 2 is characterized in that: The protruding portion is a secondary plate, and the secondary plate is used to cooperate with a motor to provide power for the multi-section sorting trolley.

4. The trolley pitch detection mechanism according to claim 2, characterized in that: The distance measuring mechanism includes a distance measuring sensor, and the second detection mechanism also includes a distance measuring piece. The distance measuring sensor and the distance measuring piece cooperate to measure the distance between the first detection mechanism and the second detection mechanism.

5. The trolley pitch detection mechanism according to claim 4, characterized in that: The second detection mechanism also includes a fine-tuning mechanism and a fixed base, wherein the fixed base is used to fix the second detection mechanism to the trolley guide rail, and the fine-tuning mechanism is used to adjust the position of the distance measuring piece and the photoelectric sensor included in the second detection mechanism relative to the fixed base.

6. The trolley pitch detection mechanism according to claim 5, characterized in that: The fine-tuning mechanism includes: a lead screw and a shaft arranged parallel to the fixed base, and a wrench fixed to the lead screw, the lead screw and the shaft pass through a fixed plate respectively, the distance measuring piece and the photoelectric sensor included in the second detection mechanism are rotationally connected to the lead screw through the fixed plate, and when the lead screw rotates driven by the wrench, the fixed plate drives the distance measuring piece and the photoelectric sensor included in the second detection mechanism to move axially on the shaft.

7. The trolley pitch detection mechanism according to claim 2, characterized in that: The photoelectric sensor is a slot-type photoelectric sensor, which is fixed to the profile through a first fixing plate. The distance measuring mechanism is a laser distance measuring sensor, which is fixed to the profile through a second fixing plate. The profile is fixed to the trolley guide rail through connecting plates at both ends.

8. The trolley pitch detection mechanism according to claim 6, characterized in that: The fixed base comprises a fixed seat and a bottom plate, and the lead screw and the shaft are mounted on the fixed seat parallel to the bottom plate.

9. The trolley pitch detection mechanism according to claim 6, characterized in that: The distance measuring piece and the photoelectric sensor included in the second detection mechanism are respectively fixed on two sides of the fixing plate.

10. The trolley pitch detection mechanism according to claim 8, characterized in that: The lead screw is fixed on the fixing seat through an oil-free bushing.

11. A method for detecting the pitch of a trolley, applied to a cross sorting machine as claimed in any one of claims 1 to 10, wherein: The distance between the first detection mechanism and the second detection mechanism is a standard distance, and the standard distance is the sum of the lengths of the first number of sorting vehicles and the second number of standard pitches. The method includes: In response to receiving the trigger signals of the first detection mechanism and the second detection mechanism at the same time, a verification success message is output, wherein the verification success message indicates that the actual pitch of the sorting trolley currently being detected meets the requirements.

12. The trolley pitch calibration method according to claim 11, wherein: The method further comprises: In response to receiving the trigger signal of the first detection mechanism and not receiving the trigger signal of the second detection mechanism at the same time, outputting verification failure information and the number of the sorting trolley currently being detected, the verification failure information indicates that the actual pitch of the sorting trolley currently being detected does not meet the requirements.

13. The trolley pitch calibration method according to claim 12, wherein: The method further comprises: In response to receiving a trigger signal from the first detection mechanism and not receiving a trigger signal from the second detection mechanism at the same time, adjusting the distance between the first detection mechanism and the second detection mechanism so that the first detection mechanism and the second detection mechanism are triggered at the same time; determining the actual pitch of the sorting cart currently being detected by the distance measured by the distance measuring mechanism.

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